diff --git a/avconv.c b/avconv.c
index 89264aa8d3..76d8def806 100644
--- a/avconv.c
+++ b/avconv.c
@@ -2122,10 +2122,6 @@ static int transcode_init(OutputFile *output_files,
                 codec->frame_size = icodec->frame_size;
                 codec->audio_service_type = icodec->audio_service_type;
                 codec->block_align= icodec->block_align;
-                if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
-                    codec->block_align= 0;
-                if(codec->codec_id == CODEC_ID_AC3)
-                    codec->block_align= 0;
                 break;
             case AVMEDIA_TYPE_VIDEO:
                 codec->pix_fmt = icodec->pix_fmt;
diff --git a/doc/libavfilter.texi b/doc/libavfilter.texi
index 5bb5b1a84d..766b77f083 100644
--- a/doc/libavfilter.texi
+++ b/doc/libavfilter.texi
@@ -36,11 +36,10 @@ and the vflip filter before merging it back with the other stream by
 overlaying it on top. You can use the following command to achieve this:
 
 @example
-./ffmpeg -i in.avi -s 240x320 -vf "[in] split [T1], fifo, [T2] overlay= 0:240 [out]; [T1] fifo, crop=0:0:-1:240, vflip [T2]
+./ffmpeg -i input -vf "[in] split [T1], fifo, [T2] overlay=0:H/2 [out]; [T1] fifo, crop=iw:ih/2:0:ih/2, vflip [T2]" output
 @end example
 
-where input_video.avi has a vertical resolution of 480 pixels. The
-result will be that in output the top half of the video is mirrored
+The result will be that in output the top half of the video is mirrored
 onto the bottom half.
 
 Video filters are loaded using the @var{-vf} option passed to
diff --git a/ffmpeg.c b/ffmpeg.c
index 7efbd88045..d3e97a3fc9 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -2165,10 +2165,6 @@ static int transcode_init(OutputFile *output_files, int nb_output_files,
                 codec->frame_size = icodec->frame_size;
                 codec->audio_service_type = icodec->audio_service_type;
                 codec->block_align= icodec->block_align;
-                if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
-                    codec->block_align= 0;
-                if(codec->codec_id == CODEC_ID_AC3)
-                    codec->block_align= 0;
                 break;
             case AVMEDIA_TYPE_VIDEO:
                 codec->pix_fmt = icodec->pix_fmt;
diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c
index 9d2ce1dfaa..9285472245 100644
--- a/libavcodec/apedec.c
+++ b/libavcodec/apedec.c
@@ -140,8 +140,6 @@ typedef struct APEContext {
 
     uint32_t CRC;                            ///< frame CRC
     int frameflags;                          ///< frame flags
-    int currentframeblocks;                  ///< samples (per channel) in current frame
-    int blocksdecoded;                       ///< count of decoded samples in current frame
     APEPredictor predictor;                  ///< predictor used for final reconstruction
 
     int32_t decoded0[BLOCKS_PER_LOOP];       ///< decoded data for the first channel
@@ -157,7 +155,6 @@ typedef struct APEContext {
     uint8_t *data;                           ///< current frame data
     uint8_t *data_end;                       ///< frame data end
     const uint8_t *ptr;                      ///< current position in frame data
-    const uint8_t *last_ptr;                 ///< position where last 4608-sample block ended
 
     int error;
 } APEContext;
@@ -457,8 +454,6 @@ static void entropy_decode(APEContext *ctx, int blockstodecode, int stereo)
     int32_t *decoded0 = ctx->decoded0;
     int32_t *decoded1 = ctx->decoded1;
 
-    ctx->blocksdecoded = blockstodecode;
-
     if (ctx->frameflags & APE_FRAMECODE_STEREO_SILENCE) {
         /* We are pure silence, just memset the output buffer. */
         memset(decoded0, 0, blockstodecode * sizeof(int32_t));
@@ -470,9 +465,6 @@ static void entropy_decode(APEContext *ctx, int blockstodecode, int stereo)
                 *decoded1++ = ape_decode_value(ctx, &ctx->riceX);
         }
     }
-
-    if (ctx->blocksdecoded == ctx->currentframeblocks)
-        range_dec_normalize(ctx);   /* normalize to use up all bytes */
 }
 
 static int init_entropy_decoder(APEContext *ctx)
@@ -492,9 +484,6 @@ static int init_entropy_decoder(APEContext *ctx)
         ctx->frameflags = bytestream_get_be32(&ctx->ptr);
     }
 
-    /* Keep a count of the blocks decoded in this frame */
-    ctx->blocksdecoded = 0;
-
     /* Initialize the rice structs */
     ctx->riceX.k = 10;
     ctx->riceX.ksum = (1 << ctx->riceX.k) * 16;
@@ -824,25 +813,22 @@ static int ape_decode_frame(AVCodecContext *avctx,
     int buf_size = avpkt->size;
     APEContext *s = avctx->priv_data;
     int16_t *samples = data;
-    uint32_t nblocks;
     int i;
-    int blockstodecode;
-    int bytes_used;
-
-    /* should not happen but who knows */
-    if (BLOCKS_PER_LOOP * 2 * avctx->channels > *data_size) {
-        av_log (avctx, AV_LOG_ERROR, "Output buffer is too small.\n");
-        return AVERROR(EINVAL);
-    }
+    int blockstodecode, out_size;
+    int bytes_used = 0;
 
     /* this should never be negative, but bad things will happen if it is, so
        check it just to make sure. */
     av_assert0(s->samples >= 0);
 
     if(!s->samples){
-        uint32_t offset;
+        uint32_t nblocks, offset;
         void *tmp_data;
 
+        if (!buf_size) {
+            *data_size = 0;
+            return 0;
+        }
         if (buf_size < 8) {
             av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");
             return AVERROR_INVALIDDATA;
@@ -853,7 +839,7 @@ static int ape_decode_frame(AVCodecContext *avctx,
             return AVERROR(ENOMEM);
         s->data = tmp_data;
         s->dsp.bswap_buf((uint32_t*)s->data, (const uint32_t*)buf, buf_size >> 2);
-        s->ptr = s->last_ptr = s->data;
+        s->ptr = s->data;
         s->data_end = s->data + buf_size;
 
         nblocks = bytestream_get_be32(&s->ptr);
@@ -873,7 +859,7 @@ static int ape_decode_frame(AVCodecContext *avctx,
             av_log(avctx, AV_LOG_ERROR, "Invalid sample count: %u.\n", nblocks);
             return AVERROR_INVALIDDATA;
         }
-        s->currentframeblocks = s->samples = nblocks;
+        s->samples = nblocks;
 
         memset(s->decoded0,  0, sizeof(s->decoded0));
         memset(s->decoded1,  0, sizeof(s->decoded1));
@@ -883,6 +869,8 @@ static int ape_decode_frame(AVCodecContext *avctx,
             av_log(avctx, AV_LOG_ERROR, "Error reading frame header\n");
             return AVERROR_INVALIDDATA;
         }
+
+        bytes_used = buf_size;
     }
 
     if (!s->data) {
@@ -890,8 +878,14 @@ static int ape_decode_frame(AVCodecContext *avctx,
         return buf_size;
     }
 
-    nblocks = s->samples;
-    blockstodecode = FFMIN(BLOCKS_PER_LOOP, nblocks);
+    blockstodecode = FFMIN(BLOCKS_PER_LOOP, s->samples);
+
+    out_size = blockstodecode * avctx->channels *
+               av_get_bytes_per_sample(avctx->sample_fmt);
+    if (*data_size < out_size) {
+        av_log(avctx, AV_LOG_ERROR, "Output buffer is too small.\n");
+        return AVERROR(EINVAL);
+    }
 
     s->error=0;
 
@@ -915,9 +909,7 @@ static int ape_decode_frame(AVCodecContext *avctx,
 
     s->samples -= blockstodecode;
 
-    *data_size = blockstodecode * 2 * s->channels;
-    bytes_used = s->samples ? s->ptr - s->last_ptr : buf_size;
-    s->last_ptr = s->ptr;
+    *data_size = out_size;
     return bytes_used;
 }
 
@@ -935,7 +927,7 @@ AVCodec ff_ape_decoder = {
     .init           = ape_decode_init,
     .close          = ape_decode_close,
     .decode         = ape_decode_frame,
-    .capabilities = CODEC_CAP_SUBFRAMES,
+    .capabilities   = CODEC_CAP_SUBFRAMES | CODEC_CAP_DELAY,
     .flush = ape_flush,
     .long_name = NULL_IF_CONFIG_SMALL("Monkey's Audio"),
 };
diff --git a/libavcodec/atrac1.c b/libavcodec/atrac1.c
index d4d5986821..f341b1c554 100644
--- a/libavcodec/atrac1.c
+++ b/libavcodec/atrac1.c
@@ -284,7 +284,7 @@ static int atrac1_decode_frame(AVCodecContext *avctx, void *data,
 
 
     if (buf_size < 212 * q->channels) {
-        av_log(avctx,AV_LOG_ERROR,"Not enough data to decode!\n");
+        av_log(avctx, AV_LOG_ERROR, "Not enough data to decode!\n");
         return AVERROR_INVALIDDATA;
     }
 
diff --git a/libavcodec/mpc7.c b/libavcodec/mpc7.c
index 272e1b28ba..3418b7b4f8 100644
--- a/libavcodec/mpc7.c
+++ b/libavcodec/mpc7.c
@@ -200,7 +200,7 @@ static int mpc7_decode_frame(AVCodecContext * avctx,
     int off, out_size;
     int bits_used, bits_avail;
 
-    memset(bands, 0, sizeof(bands));
+    memset(bands, 0, sizeof(*bands) * (c->maxbands + 1));
     if(buf_size <= 4){
         av_log(avctx, AV_LOG_ERROR, "Too small buffer passed (%i bytes)\n", buf_size);
         return AVERROR(EINVAL);
diff --git a/libavcodec/sunrast.c b/libavcodec/sunrast.c
index ea7a3e55c0..36dfa98293 100644
--- a/libavcodec/sunrast.c
+++ b/libavcodec/sunrast.c
@@ -68,7 +68,7 @@ static int sunrast_decode_frame(AVCodecContext *avctx, void *data,
     type      = AV_RB32(buf+20);
     maptype   = AV_RB32(buf+24);
     maplength = AV_RB32(buf+28);
-    buf += 32;
+    buf      += 32;
 
     if (type < RT_OLD || type > RT_FORMAT_IFF) {
         av_log(avctx, AV_LOG_ERROR, "invalid (compression) type\n");
diff --git a/libavcodec/truespeech.c b/libavcodec/truespeech.c
index 8cd05145db..b0a8e44150 100644
--- a/libavcodec/truespeech.c
+++ b/libavcodec/truespeech.c
@@ -233,8 +233,7 @@ static void truespeech_update_filters(TSContext *dec, int16_t *out, int quart)
 {
     int i;
 
-    for(i = 0; i < 86; i++)
-        dec->filtbuf[i] = dec->filtbuf[i + 60];
+    memmove(dec->filtbuf, &dec->filtbuf[60], 86 * sizeof(*dec->filtbuf));
     for(i = 0; i < 60; i++){
         dec->filtbuf[i + 86] = out[i] + dec->newvec[i] - (dec->newvec[i] >> 3);
         out[i] += dec->newvec[i];
diff --git a/libavcodec/vorbisdec.c b/libavcodec/vorbisdec.c
index 675de02d86..0457d8b454 100644
--- a/libavcodec/vorbisdec.c
+++ b/libavcodec/vorbisdec.c
@@ -168,7 +168,7 @@ static const char idx_err_str[] = "Index value %d out of range (0 - %d) for %s a
         av_log(vc->avccontext, AV_LOG_ERROR,\
                idx_err_str,\
                (int)(idx), (int)(limit - 1), #idx, __FILE__, __LINE__);\
-        return -1;\
+        return AVERROR_INVALIDDATA;\
     }
 #define GET_VALIDATED_INDEX(idx, bits, limit) \
     {\
@@ -241,6 +241,7 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc)
     uint32_t *tmp_vlc_codes;
     GetBitContext *gb = &vc->gb;
     uint16_t *codebook_multiplicands;
+    int ret = 0;
 
     vc->codebook_count = get_bits(gb, 8) + 1;
 
@@ -260,6 +261,7 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc)
         if (get_bits(gb, 24) != 0x564342) {
             av_log(vc->avccontext, AV_LOG_ERROR,
                    " %u. Codebook setup data corrupt.\n", cb);
+            ret = AVERROR_INVALIDDATA;
             goto error;
         }
 
@@ -268,6 +270,7 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc)
             av_log(vc->avccontext, AV_LOG_ERROR,
                    " %u. Codebook's dimension is invalid (%d).\n",
                    cb, codebook_setup->dimensions);
+            ret = AVERROR_INVALIDDATA;
             goto error;
         }
         entries = get_bits(gb, 24);
@@ -275,6 +278,7 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc)
             av_log(vc->avccontext, AV_LOG_ERROR,
                    " %u. Codebook has too many entries (%u).\n",
                    cb, entries);
+            ret = AVERROR_INVALIDDATA;
             goto error;
         }
 
@@ -332,6 +336,7 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc)
             }
             if (current_entry>used_entries) {
                 av_log(vc->avccontext, AV_LOG_ERROR, " More codelengths than codes in codebook. \n");
+                ret = AVERROR_INVALIDDATA;
                 goto error;
             }
         }
@@ -399,17 +404,20 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc)
             }
             if (j != used_entries) {
                 av_log(vc->avccontext, AV_LOG_ERROR, "Bug in codevector vector building code. \n");
+                ret = AVERROR_INVALIDDATA;
                 goto error;
             }
             entries = used_entries;
         } else if (codebook_setup->lookup_type >= 2) {
             av_log(vc->avccontext, AV_LOG_ERROR, "Codebook lookup type not supported. \n");
+            ret = AVERROR_INVALIDDATA;
             goto error;
         }
 
 // Initialize VLC table
         if (ff_vorbis_len2vlc(tmp_vlc_bits, tmp_vlc_codes, entries)) {
             av_log(vc->avccontext, AV_LOG_ERROR, " Invalid code lengths while generating vlcs. \n");
+            ret = AVERROR_INVALIDDATA;
             goto error;
         }
         codebook_setup->maxdepth = 0;
@@ -424,7 +432,11 @@ static int vorbis_parse_setup_hdr_codebooks(vorbis_context *vc)
 
         codebook_setup->maxdepth = (codebook_setup->maxdepth+codebook_setup->nb_bits - 1) / codebook_setup->nb_bits;
 
-        if (init_vlc(&codebook_setup->vlc, codebook_setup->nb_bits, entries, tmp_vlc_bits, sizeof(*tmp_vlc_bits), sizeof(*tmp_vlc_bits), tmp_vlc_codes, sizeof(*tmp_vlc_codes), sizeof(*tmp_vlc_codes), INIT_VLC_LE)) {
+        if ((ret = init_vlc(&codebook_setup->vlc, codebook_setup->nb_bits,
+                            entries, tmp_vlc_bits, sizeof(*tmp_vlc_bits),
+                            sizeof(*tmp_vlc_bits), tmp_vlc_codes,
+                            sizeof(*tmp_vlc_codes), sizeof(*tmp_vlc_codes),
+                            INIT_VLC_LE))) {
             av_log(vc->avccontext, AV_LOG_ERROR, " Error generating vlc tables. \n");
             goto error;
         }
@@ -440,7 +452,7 @@ error:
     av_free(tmp_vlc_bits);
     av_free(tmp_vlc_codes);
     av_free(codebook_multiplicands);
-    return -1;
+    return ret;
 }
 
 // Process time domain transforms part (unused in Vorbis I)
@@ -458,7 +470,7 @@ static int vorbis_parse_setup_hdr_tdtransforms(vorbis_context *vc)
 
         if (vorbis_tdtransform) {
             av_log(vc->avccontext, AV_LOG_ERROR, "Vorbis time domain transform data nonzero. \n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
     }
     return 0;
@@ -550,7 +562,7 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc)
                 av_log(vc->avccontext, AV_LOG_ERROR,
                        "Floor value is too large for blocksize: %u (%"PRIu32")\n",
                        rangemax, vc->blocksize[1] / 2);
-                return -1;
+                return AVERROR_INVALIDDATA;
             }
             floor_setup->data.t1.list[0].x = 0;
             floor_setup->data.t1.list[1].x = rangemax;
@@ -580,7 +592,7 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc)
             if (floor_setup->data.t0.amplitude_bits == 0) {
                 av_log(vc->avccontext, AV_LOG_ERROR,
                        "Floor 0 amplitude bits is 0.\n");
-                return -1;
+                return AVERROR_INVALIDDATA;
             }
             floor_setup->data.t0.amplitude_offset = get_bits(gb, 8);
             floor_setup->data.t0.num_books        = get_bits(gb, 4) + 1;
@@ -589,7 +601,7 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc)
             floor_setup->data.t0.book_list =
                 av_malloc(floor_setup->data.t0.num_books);
             if (!floor_setup->data.t0.book_list)
-                return -1;
+                return AVERROR(ENOMEM);
             /* read book indexes */
             {
                 int idx;
@@ -610,7 +622,7 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc)
                 av_malloc((floor_setup->data.t0.order + 1 + max_codebook_dim)
                           * sizeof(*floor_setup->data.t0.lsp));
             if (!floor_setup->data.t0.lsp)
-                return -1;
+                return AVERROR(ENOMEM);
 
             /* debug output parsed headers */
             av_dlog(NULL, "floor0 order: %u\n", floor_setup->data.t0.order);
@@ -634,7 +646,7 @@ static int vorbis_parse_setup_hdr_floors(vorbis_context *vc)
             }
         } else {
             av_log(vc->avccontext, AV_LOG_ERROR, "Invalid floor type!\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
     }
     return 0;
@@ -672,7 +684,7 @@ static int vorbis_parse_setup_hdr_residues(vorbis_context *vc)
                    "partition out of bounds: type, begin, end, size, blocksize: %"PRIu16", %"PRIu32", %"PRIu32", %u, %"PRIu32"\n",
                    res_setup->type, res_setup->begin, res_setup->end,
                    res_setup->partition_size, vc->blocksize[1] / 2);
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
 
         res_setup->classifications = get_bits(gb, 6) + 1;
@@ -737,7 +749,7 @@ static int vorbis_parse_setup_hdr_mappings(vorbis_context *vc)
 
         if (get_bits(gb, 16)) {
             av_log(vc->avccontext, AV_LOG_ERROR, "Other mappings than type 0 are not compliant with the Vorbis I specification. \n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
         if (get_bits1(gb)) {
             mapping_setup->submaps = get_bits(gb, 4) + 1;
@@ -764,7 +776,7 @@ static int vorbis_parse_setup_hdr_mappings(vorbis_context *vc)
 
         if (get_bits(gb, 2)) {
             av_log(vc->avccontext, AV_LOG_ERROR, "%u. mapping setup data invalid.\n", i);
-            return -1; // following spec.
+            return AVERROR_INVALIDDATA; // following spec.
         }
 
         if (mapping_setup->submaps>1) {
@@ -851,41 +863,42 @@ static int vorbis_parse_setup_hdr_modes(vorbis_context *vc)
 static int vorbis_parse_setup_hdr(vorbis_context *vc)
 {
     GetBitContext *gb = &vc->gb;
+    int ret;
 
     if ((get_bits(gb, 8) != 'v') || (get_bits(gb, 8) != 'o') ||
         (get_bits(gb, 8) != 'r') || (get_bits(gb, 8) != 'b') ||
         (get_bits(gb, 8) != 'i') || (get_bits(gb, 8) != 's')) {
         av_log(vc->avccontext, AV_LOG_ERROR, " Vorbis setup header packet corrupt (no vorbis signature). \n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
-    if (vorbis_parse_setup_hdr_codebooks(vc)) {
+    if ((ret = vorbis_parse_setup_hdr_codebooks(vc))) {
         av_log(vc->avccontext, AV_LOG_ERROR, " Vorbis setup header packet corrupt (codebooks). \n");
-        return -2;
+        return ret;
     }
-    if (vorbis_parse_setup_hdr_tdtransforms(vc)) {
+    if ((ret = vorbis_parse_setup_hdr_tdtransforms(vc))) {
         av_log(vc->avccontext, AV_LOG_ERROR, " Vorbis setup header packet corrupt (time domain transforms). \n");
-        return -3;
+        return ret;
     }
-    if (vorbis_parse_setup_hdr_floors(vc)) {
+    if ((ret = vorbis_parse_setup_hdr_floors(vc))) {
         av_log(vc->avccontext, AV_LOG_ERROR, " Vorbis setup header packet corrupt (floors). \n");
-        return -4;
+        return ret;
     }
-    if (vorbis_parse_setup_hdr_residues(vc)) {
+    if ((ret = vorbis_parse_setup_hdr_residues(vc))) {
         av_log(vc->avccontext, AV_LOG_ERROR, " Vorbis setup header packet corrupt (residues). \n");
-        return -5;
+        return ret;
     }
-    if (vorbis_parse_setup_hdr_mappings(vc)) {
+    if ((ret = vorbis_parse_setup_hdr_mappings(vc))) {
         av_log(vc->avccontext, AV_LOG_ERROR, " Vorbis setup header packet corrupt (mappings). \n");
-        return -6;
+        return ret;
     }
-    if (vorbis_parse_setup_hdr_modes(vc)) {
+    if ((ret = vorbis_parse_setup_hdr_modes(vc))) {
         av_log(vc->avccontext, AV_LOG_ERROR, " Vorbis setup header packet corrupt (modes). \n");
-        return -7;
+        return ret;
     }
     if (!get_bits1(gb)) {
         av_log(vc->avccontext, AV_LOG_ERROR, " Vorbis setup header packet corrupt (framing flag). \n");
-        return -8; // framing flag bit unset error
+        return AVERROR_INVALIDDATA; // framing flag bit unset error
     }
 
     return 0;
@@ -902,19 +915,19 @@ static int vorbis_parse_id_hdr(vorbis_context *vc)
         (get_bits(gb, 8) != 'r') || (get_bits(gb, 8) != 'b') ||
         (get_bits(gb, 8) != 'i') || (get_bits(gb, 8) != 's')) {
         av_log(vc->avccontext, AV_LOG_ERROR, " Vorbis id header packet corrupt (no vorbis signature). \n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     vc->version        = get_bits_long(gb, 32);    //FIXME check 0
     vc->audio_channels = get_bits(gb, 8);
     if (vc->audio_channels <= 0) {
         av_log(vc->avccontext, AV_LOG_ERROR, "Invalid number of channels\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     vc->audio_samplerate = get_bits_long(gb, 32);
     if (vc->audio_samplerate <= 0) {
         av_log(vc->avccontext, AV_LOG_ERROR, "Invalid samplerate\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     vc->bitrate_maximum = get_bits_long(gb, 32);
     vc->bitrate_nominal = get_bits_long(gb, 32);
@@ -925,20 +938,14 @@ static int vorbis_parse_id_hdr(vorbis_context *vc)
     vc->blocksize[1] = (1 << bl1);
     if (bl0 > 13 || bl0 < 6 || bl1 > 13 || bl1 < 6 || bl1 < bl0) {
         av_log(vc->avccontext, AV_LOG_ERROR, " Vorbis id header packet corrupt (illegal blocksize). \n");
-        return -3;
-    }
-    // output format int16
-    if (vc->blocksize[1] / 2 * vc->audio_channels * 2 > AVCODEC_MAX_AUDIO_FRAME_SIZE) {
-        av_log(vc->avccontext, AV_LOG_ERROR, "Vorbis channel count makes "
-               "output packets too large.\n");
-        return -4;
+        return AVERROR_INVALIDDATA;
     }
     vc->win[0] = ff_vorbis_vwin[bl0 - 6];
     vc->win[1] = ff_vorbis_vwin[bl1 - 6];
 
     if ((get_bits1(gb)) == 0) {
         av_log(vc->avccontext, AV_LOG_ERROR, " Vorbis id header packet corrupt (framing flag not set). \n");
-        return -2;
+        return AVERROR_INVALIDDATA;
     }
 
     vc->channel_residues =  av_malloc((vc->blocksize[1]  / 2) * vc->audio_channels * sizeof(*vc->channel_residues));
@@ -972,7 +979,7 @@ static av_cold int vorbis_decode_init(AVCodecContext *avccontext)
     uint8_t *header_start[3];
     int header_len[3];
     GetBitContext *gb = &(vc->gb);
-    int hdr_type;
+    int hdr_type, ret;
 
     vc->avccontext = avccontext;
     dsputil_init(&vc->dsp, avccontext);
@@ -988,24 +995,24 @@ static av_cold int vorbis_decode_init(AVCodecContext *avccontext)
 
     if (!headers_len) {
         av_log(avccontext, AV_LOG_ERROR, "Extradata missing.\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
-    if (avpriv_split_xiph_headers(headers, headers_len, 30, header_start, header_len) < 0) {
+    if ((ret = avpriv_split_xiph_headers(headers, headers_len, 30, header_start, header_len)) < 0) {
         av_log(avccontext, AV_LOG_ERROR, "Extradata corrupt.\n");
-        return -1;
+        return ret;
     }
 
     init_get_bits(gb, header_start[0], header_len[0]*8);
     hdr_type = get_bits(gb, 8);
     if (hdr_type != 1) {
         av_log(avccontext, AV_LOG_ERROR, "First header is not the id header.\n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
-    if (vorbis_parse_id_hdr(vc)) {
+    if ((ret = vorbis_parse_id_hdr(vc))) {
         av_log(avccontext, AV_LOG_ERROR, "Id header corrupt.\n");
         vorbis_free(vc);
-        return -1;
+        return ret;
     }
 
     init_get_bits(gb, header_start[2], header_len[2]*8);
@@ -1013,12 +1020,12 @@ static av_cold int vorbis_decode_init(AVCodecContext *avccontext)
     if (hdr_type != 5) {
         av_log(avccontext, AV_LOG_ERROR, "Third header is not the setup header.\n");
         vorbis_free(vc);
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
-    if (vorbis_parse_setup_hdr(vc)) {
+    if ((ret = vorbis_parse_setup_hdr(vc))) {
         av_log(avccontext, AV_LOG_ERROR, "Setup header corrupt.\n");
         vorbis_free(vc);
-        return -1;
+        return ret;
     }
 
     if (vc->audio_channels > 8)
@@ -1061,7 +1068,7 @@ static int vorbis_floor0_decode(vorbis_context *vc,
         codebook = vc->codebooks[vf->book_list[book_idx]];
         /* Invalid codebook! */
         if (!codebook.codevectors)
-            return -1;
+            return AVERROR_INVALIDDATA;
 
         while (lsp_len<vf->order) {
             int vec_off;
@@ -1427,7 +1434,7 @@ static inline int vorbis_residue_decode(vorbis_context *vc, vorbis_residue *vr,
         return vorbis_residue_decode_internal(vc, vr, ch, do_not_decode, vec, vlen, 0);
     else {
         av_log(vc->avccontext, AV_LOG_ERROR, " Invalid residue type while residue decode?! \n");
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 }
 
@@ -1475,7 +1482,7 @@ static int vorbis_parse_audio_packet(vorbis_context *vc)
 
     if (get_bits1(gb)) {
         av_log(vc->avccontext, AV_LOG_ERROR, "Not a Vorbis I audio packet.\n");
-        return -1; // packet type not audio
+        return AVERROR_INVALIDDATA; // packet type not audio
     }
 
     if (vc->mode_count == 1) {
@@ -1512,7 +1519,7 @@ static int vorbis_parse_audio_packet(vorbis_context *vc)
 
         if (ret < 0) {
             av_log(vc->avccontext, AV_LOG_ERROR, "Invalid codebook in vorbis_floor_decode.\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
         no_residue[i] = ret;
         ch_floor_ptr += blocksize / 2;
@@ -1613,19 +1620,12 @@ static int vorbis_decode_frame(AVCodecContext *avccontext,
     const float *channel_ptrs[255];
     int i, len, out_size;
 
-    if (!buf_size)
-        return 0;
-
     av_dlog(NULL, "packet length %d \n", buf_size);
 
     init_get_bits(gb, buf, buf_size*8);
 
-    len = vorbis_parse_audio_packet(vc);
-
-    if (len <= 0) {
-        *data_size = 0;
-        return buf_size;
-    }
+    if ((len = vorbis_parse_audio_packet(vc)) <= 0)
+        return len;
 
     if (!vc->first_frame) {
         vc->first_frame = 1;
diff --git a/libavformat/avc.c b/libavformat/avc.c
index ed2125b527..eff1ddb121 100644
--- a/libavformat/avc.c
+++ b/libavformat/avc.c
@@ -75,8 +75,11 @@ int ff_avc_parse_nal_units(AVIOContext *pb, const uint8_t *buf_in, int size)
 
     size = 0;
     nal_start = ff_avc_find_startcode(p, end);
-    while (nal_start < end) {
-        while(!*(nal_start++));
+    for (;;) {
+        while (nal_start < end && !*(nal_start++));
+        if (nal_start == end)
+            break;
+
         nal_end = ff_avc_find_startcode(nal_start, end);
         avio_wb32(pb, nal_end - nal_start);
         avio_write(pb, nal_start, nal_end - nal_start);
@@ -117,22 +120,26 @@ int ff_isom_write_avcc(AVIOContext *pb, const uint8_t *data, int len)
             end = buf + len;
 
             /* look for sps and pps */
-            while (buf < end) {
-                unsigned int size;
+            while (end - buf > 4) {
+                uint32_t size;
                 uint8_t nal_type;
-                size = AV_RB32(buf);
-                nal_type = buf[4] & 0x1f;
+                size = FFMIN(AV_RB32(buf), end - buf - 4);
+                buf += 4;
+                nal_type = buf[0] & 0x1f;
+
                 if (nal_type == 7) { /* SPS */
-                    sps = buf + 4;
+                    sps = buf;
                     sps_size = size;
                 } else if (nal_type == 8) { /* PPS */
-                    pps = buf + 4;
+                    pps = buf;
                     pps_size = size;
                 }
-                buf += size + 4;
+
+                buf += size;
             }
-            assert(sps);
-            assert(pps);
+
+            if (!sps || !pps || sps_size < 4 || sps_size > UINT16_MAX || pps_size > UINT16_MAX)
+                return AVERROR_INVALIDDATA;
 
             avio_w8(pb, 1); /* version */
             avio_w8(pb, sps[1]); /* profile */
diff --git a/libavformat/avio.c b/libavformat/avio.c
index 47b2d51ebd..4141d0bd7d 100644
--- a/libavformat/avio.c
+++ b/libavformat/avio.c
@@ -338,8 +338,11 @@ int ffurl_close(URLContext *h)
 #if CONFIG_NETWORK
     ff_network_close();
 #endif
-    if (h->prot->priv_data_size)
+    if (h->prot->priv_data_size) {
+        if (h->prot->priv_data_class)
+            av_opt_free(h->priv_data);
         av_free(h->priv_data);
+    }
     av_free(h);
     return ret;
 }
diff --git a/libavformat/crypto.c b/libavformat/crypto.c
index b9d3e0326f..ea417470b6 100644
--- a/libavformat/crypto.c
+++ b/libavformat/crypto.c
@@ -45,9 +45,10 @@ typedef struct {
 } CryptoContext;
 
 #define OFFSET(x) offsetof(CryptoContext, x)
+#define D AV_OPT_FLAG_DECODING_PARAM
 static const AVOption options[] = {
-    {"key", "AES decryption key", OFFSET(key), AV_OPT_TYPE_BINARY },
-    {"iv",  "AES decryption initialization vector", OFFSET(iv),  AV_OPT_TYPE_BINARY },
+    {"key", "AES decryption key", OFFSET(key), AV_OPT_TYPE_BINARY, .flags = D },
+    {"iv",  "AES decryption initialization vector", OFFSET(iv),  AV_OPT_TYPE_BINARY, .flags = D },
     { NULL }
 };
 
@@ -61,7 +62,7 @@ static const AVClass crypto_class = {
 static int crypto_open(URLContext *h, const char *uri, int flags)
 {
     const char *nested_url;
-    int ret;
+    int ret = 0;
     CryptoContext *c = h->priv_data;
 
     if (!av_strstart(uri, "crypto+", &nested_url) &&
@@ -95,10 +96,7 @@ static int crypto_open(URLContext *h, const char *uri, int flags)
 
     h->is_streamed = 1;
 
-    return 0;
 err:
-    av_freep(&c->key);
-    av_freep(&c->iv);
     return ret;
 }
 
@@ -157,8 +155,6 @@ static int crypto_close(URLContext *h)
     if (c->hd)
         ffurl_close(c->hd);
     av_freep(&c->aes);
-    av_freep(&c->key);
-    av_freep(&c->iv);
     return 0;
 }
 
diff --git a/libavformat/http.c b/libavformat/http.c
index 414eb8719f..5f1837d6ad 100644
--- a/libavformat/http.c
+++ b/libavformat/http.c
@@ -47,36 +47,33 @@ typedef struct {
     int64_t off, filesize;
     char location[MAX_URL_SIZE];
     HTTPAuthState auth_state;
-    unsigned char headers[BUFFER_SIZE];
+    char *headers;
     int willclose;          /**< Set if the server correctly handles Connection: close and will close the connection after feeding us the content. */
+    int chunked_post;
 } HTTPContext;
 
 #define OFFSET(x) offsetof(HTTPContext, x)
+#define D AV_OPT_FLAG_DECODING_PARAM
+#define E AV_OPT_FLAG_ENCODING_PARAM
 static const AVOption options[] = {
-{"chunksize", "use chunked transfer-encoding for posts, -1 disables it, 0 enables it", OFFSET(chunksize), AV_OPT_TYPE_INT64, {.dbl = 0}, -1, 0 }, /* Default to 0, for chunked POSTs */
+{"chunked_post", "use chunked transfer-encoding for posts", OFFSET(chunked_post), AV_OPT_TYPE_INT, {.dbl = 1}, 0, 1, E },
+{"headers", "custom HTTP headers, can override built in default headers", OFFSET(headers), AV_OPT_TYPE_STRING, { 0 }, 0, 0, D|E },
 {NULL}
 };
-static const AVClass httpcontext_class = {
-    .class_name     = "HTTP",
-    .item_name      = av_default_item_name,
-    .option         = options,
-    .version        = LIBAVUTIL_VERSION_INT,
+#define HTTP_CLASS(flavor)\
+static const AVClass flavor ## _context_class = {\
+    .class_name     = #flavor,\
+    .item_name      = av_default_item_name,\
+    .option         = options,\
+    .version        = LIBAVUTIL_VERSION_INT,\
 };
 
+HTTP_CLASS(http);
+HTTP_CLASS(https);
+
 static int http_connect(URLContext *h, const char *path, const char *hoststr,
                         const char *auth, int *new_location);
 
-void ff_http_set_headers(URLContext *h, const char *headers)
-{
-    HTTPContext *s = h->priv_data;
-    int len = strlen(headers);
-
-    if (len && strcmp("\r\n", headers + len - 2))
-        av_log(h, AV_LOG_ERROR, "No trailing CRLF found in HTTP header.\n");
-
-    av_strlcpy(s->headers, headers, sizeof(s->headers));
-}
-
 void ff_http_init_auth_state(URLContext *dest, const URLContext *src)
 {
     memcpy(&((HTTPContext*)dest->priv_data)->auth_state,
@@ -168,6 +165,12 @@ static int http_open(URLContext *h, const char *uri, int flags)
     s->filesize = -1;
     av_strlcpy(s->location, uri, sizeof(s->location));
 
+    if (s->headers) {
+        int len = strlen(s->headers);
+        if (len < 2 || strcmp("\r\n", s->headers + len - 2))
+            av_log(h, AV_LOG_WARNING, "No trailing CRLF found in HTTP header.\n");
+    }
+
     return http_open_cnx(h);
 }
 static int http_getc(HTTPContext *s)
@@ -285,6 +288,8 @@ static int process_line(URLContext *h, char *line, int line_count,
 static inline int has_header(const char *str, const char *header)
 {
     /* header + 2 to skip over CRLF prefix. (make sure you have one!) */
+    if (!str)
+        return 0;
     return av_stristart(str, header + 2, NULL) || av_stristr(str, header);
 }
 
@@ -312,7 +317,7 @@ static int http_connect(URLContext *h, const char *path, const char *hoststr,
     if (!has_header(s->headers, "\r\nAccept: "))
         len += av_strlcpy(headers + len, "Accept: */*\r\n",
                           sizeof(headers) - len);
-    if (!has_header(s->headers, "\r\nRange: "))
+    if (!has_header(s->headers, "\r\nRange: ") && !post)
         len += av_strlcatf(headers + len, sizeof(headers) - len,
                            "Range: bytes=%"PRId64"-\r\n", s->off);
     if (!has_header(s->headers, "\r\nConnection: "))
@@ -323,7 +328,8 @@ static int http_connect(URLContext *h, const char *path, const char *hoststr,
                            "Host: %s\r\n", hoststr);
 
     /* now add in custom headers */
-    av_strlcpy(headers+len, s->headers, sizeof(headers)-len);
+    if (s->headers)
+        av_strlcpy(headers + len, s->headers, sizeof(headers) - len);
 
     snprintf(s->buffer, sizeof(s->buffer),
              "%s %s HTTP/1.1\r\n"
@@ -333,7 +339,7 @@ static int http_connect(URLContext *h, const char *path, const char *hoststr,
              "\r\n",
              post ? "POST" : "GET",
              path,
-             post && s->chunksize >= 0 ? "Transfer-Encoding: chunked\r\n" : "",
+             post && s->chunked_post ? "Transfer-Encoding: chunked\r\n" : "",
              headers,
              authstr ? authstr : "");
 
@@ -430,7 +436,7 @@ static int http_write(URLContext *h, const uint8_t *buf, int size)
     char crlf[] = "\r\n";
     HTTPContext *s = h->priv_data;
 
-    if (s->chunksize == -1) {
+    if (!s->chunked_post) {
         /* non-chunked data is sent without any special encoding */
         return ffurl_write(s->hd, buf, size);
     }
@@ -456,7 +462,7 @@ static int http_close(URLContext *h)
     HTTPContext *s = h->priv_data;
 
     /* signal end of chunked encoding if used */
-    if ((h->flags & AVIO_FLAG_WRITE) && s->chunksize != -1) {
+    if ((h->flags & AVIO_FLAG_WRITE) && s->chunked_post) {
         ret = ffurl_write(s->hd, footer, sizeof(footer) - 1);
         ret = ret > 0 ? 0 : ret;
     }
@@ -519,7 +525,7 @@ URLProtocol ff_http_protocol = {
     .url_close           = http_close,
     .url_get_file_handle = http_get_file_handle,
     .priv_data_size      = sizeof(HTTPContext),
-    .priv_data_class     = &httpcontext_class,
+    .priv_data_class     = &http_context_class,
 };
 #endif
 #if CONFIG_HTTPS_PROTOCOL
@@ -532,6 +538,6 @@ URLProtocol ff_https_protocol = {
     .url_close           = http_close,
     .url_get_file_handle = http_get_file_handle,
     .priv_data_size      = sizeof(HTTPContext),
-    .priv_data_class     = &httpcontext_class,
+    .priv_data_class     = &https_context_class,
 };
 #endif
diff --git a/libavformat/http.h b/libavformat/http.h
index 19c4099ef0..342434d202 100644
--- a/libavformat/http.h
+++ b/libavformat/http.h
@@ -24,24 +24,6 @@
 
 #include "url.h"
 
-/**
- * Set custom HTTP headers.
- * A trailing CRLF ("\r\n") is required for custom headers.
- * Passing in an empty header string ("\0") will reset to defaults.
- *
- * The following headers can be overriden by custom values,
- * otherwise they will be set to their defaults.
- *  -User-Agent
- *  -Accept
- *  -Range
- *  -Host
- *  -Connection
- *
- * @param h URL context for this HTTP connection
- * @param headers the custom headers to set
- */
-void ff_http_set_headers(URLContext *h, const char *headers);
-
 /**
  * Initialize the authentication state based on another HTTP URLContext.
  * This can be used to pre-initialize the authentication parameters if
diff --git a/libavformat/mmsh.c b/libavformat/mmsh.c
index f54a976e19..c710ad9ccc 100644
--- a/libavformat/mmsh.c
+++ b/libavformat/mmsh.c
@@ -28,6 +28,7 @@
 #include <string.h>
 #include "libavutil/intreadwrite.h"
 #include "libavutil/avstring.h"
+#include "libavutil/opt.h"
 #include "internal.h"
 #include "mms.h"
 #include "asf.h"
@@ -246,7 +247,7 @@ static int mmsh_open_internal(URLContext *h, const char *uri, int flags, int tim
              CLIENTGUID
              "Connection: Close\r\n",
              host, port, mmsh->request_seq++);
-    ff_http_set_headers(mms->mms_hd, headers);
+    av_opt_set(mms->mms_hd->priv_data, "headers", headers, 0);
 
     err = ffurl_connect(mms->mms_hd);
     if (err) {
@@ -293,7 +294,7 @@ static int mmsh_open_internal(URLContext *h, const char *uri, int flags, int tim
         goto fail;
     }
     av_dlog(NULL, "out_buffer is %s", headers);
-    ff_http_set_headers(mms->mms_hd, headers);
+    av_opt_set(mms->mms_hd->priv_data, "headers", headers, 0);
 
     err = ffurl_connect(mms->mms_hd);
     if (err) {
diff --git a/libavformat/rtsp.c b/libavformat/rtsp.c
index c53b728271..68083ae2ac 100644
--- a/libavformat/rtsp.c
+++ b/libavformat/rtsp.c
@@ -1462,7 +1462,7 @@ redirect:
                  "Pragma: no-cache\r\n"
                  "Cache-Control: no-cache\r\n",
                  sessioncookie);
-        ff_http_set_headers(rt->rtsp_hd, headers);
+        av_opt_set(rt->rtsp_hd->priv_data, "headers", headers, 0);
 
         /* complete the connection */
         if (ffurl_connect(rt->rtsp_hd)) {
@@ -1485,8 +1485,8 @@ redirect:
                  "Content-Length: 32767\r\n"
                  "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n",
                  sessioncookie);
-        ff_http_set_headers(rt->rtsp_hd_out, headers);
-        av_opt_set(rt->rtsp_hd_out->priv_data, "chunksize", "-1", 0);
+        av_opt_set(rt->rtsp_hd_out->priv_data, "headers", headers, 0);
+        av_opt_set(rt->rtsp_hd_out->priv_data, "chunked_post", "0", 0);
 
         /* Initialize the authentication state for the POST session. The HTTP
          * protocol implementation doesn't properly handle multi-pass
diff --git a/libavformat/tls.c b/libavformat/tls.c
index bd73febd4d..8211e88846 100644
--- a/libavformat/tls.c
+++ b/libavformat/tls.c
@@ -73,7 +73,7 @@ static int do_tls_poll(URLContext *h, int ret)
     struct pollfd p = { c->fd, 0, 0 };
 #if CONFIG_GNUTLS
     if (ret != GNUTLS_E_AGAIN && ret != GNUTLS_E_INTERRUPTED) {
-        av_log(NULL, AV_LOG_ERROR, "%s\n", gnutls_strerror(ret));
+        av_log(h, AV_LOG_ERROR, "%s\n", gnutls_strerror(ret));
         return AVERROR(EIO);
     }
     if (gnutls_record_get_direction(c->session))
@@ -87,11 +87,11 @@ static int do_tls_poll(URLContext *h, int ret)
     } else if (ret == SSL_ERROR_WANT_WRITE) {
         p.events = POLLOUT;
     } else {
-        av_log(NULL, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
+        av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
         return AVERROR(EIO);
     }
 #endif
-    if (h->flags & URL_FLAG_NONBLOCK)
+    if (h->flags & AVIO_FLAG_NONBLOCK)
         return AVERROR(EAGAIN);
     while (1) {
         int n = poll(&p, 1, 100);
@@ -148,13 +148,13 @@ static int tls_open(URLContext *h, const char *uri, int flags)
 #elif CONFIG_OPENSSL
     c->ctx = SSL_CTX_new(SSLv3_client_method());
     if (!c->ctx) {
-        av_log(NULL, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
+        av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
         ret = AVERROR(EIO);
         goto fail;
     }
     c->ssl = SSL_new(c->ctx);
     if (!c->ssl) {
-        av_log(NULL, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
+        av_log(h, AV_LOG_ERROR, "%s\n", ERR_error_string(ERR_get_error(), NULL));
         ret = AVERROR(EIO);
         goto fail;
     }
@@ -166,7 +166,7 @@ static int tls_open(URLContext *h, const char *uri, int flags)
         if (ret > 0)
             break;
         if (ret == 0) {
-            av_log(NULL, AV_LOG_ERROR, "Unable to negotiate TLS/SSL session\n");
+            av_log(h, AV_LOG_ERROR, "Unable to negotiate TLS/SSL session\n");
             ret = AVERROR(EIO);
             goto fail;
         }
diff --git a/libavutil/aes.c b/libavutil/aes.c
index 49093efc53..af55261864 100644
--- a/libavutil/aes.c
+++ b/libavutil/aes.c
@@ -222,11 +222,9 @@ int av_aes_init(AVAES *a, const uint8_t *key, int key_bits, int decrypt)
     a->rounds = rounds;
 
     memcpy(tk, key, KC * 4);
+    memcpy(a->round_key[0].u8, key, KC * 4);
 
-    for (t = 0; t < (rounds + 1) * 16;) {
-        memcpy(a->round_key[0].u8 + t, tk, KC * 4);
-        t += KC * 4;
-
+    for (t = KC * 4; t < (rounds + 1) * 16; t += KC * 4) {
         for (i = 0; i < 4; i++)
             tk[0][i] ^= sbox[tk[KC - 1][(i + 1) & 3]];
         tk[0][0] ^= rcon[rconpointer++];
@@ -239,6 +237,8 @@ int av_aes_init(AVAES *a, const uint8_t *key, int key_bits, int decrypt)
                 for (i = 0; i < 4; i++)
                     tk[j][i] ^= sbox[tk[j - 1][i]];
         }
+
+        memcpy(a->round_key[0].u8 + t, tk, KC * 4);
     }
 
     if (decrypt) {