diff --git a/doc/APIchanges b/doc/APIchanges
index 340515cd7c..a7d99524e0 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -15,6 +15,9 @@ libavutil:     2014-08-09
 
 API changes, most recent first:
 
+2015-xx-xx - xxxxxxx - lavc 56.33.0 - avcodec.h
+  Add AV_PKT_DATA_QUALITY_FACTOR to export the quality value of an AVPacket.
+
 2015-07-16 - xxxxxxxx - lavc 56.49.100
   Add av_codec_get_codec_properties(), FF_CODEC_PROPERTY_LOSSLESS
   and FF_CODEC_PROPERTY_CLOSED_CAPTIONS
diff --git a/ffmpeg.c b/ffmpeg.c
index f9052ff7e3..635ac311e2 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -667,6 +667,11 @@ static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
         }
         ost->frame_number++;
     }
+    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
+        uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
+                                              NULL);
+        ost->quality = sd ? *(int *)sd : -1;
+    }
 
     if (bsfc)
         av_packet_split_side_data(pkt);
@@ -1257,7 +1262,8 @@ static void do_video_stats(OutputStream *ost, int frame_size)
     enc = ost->enc_ctx;
     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
         frame_number = ost->st->nb_frames;
-        fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame ? enc->coded_frame->quality / (float)FF_QP2LAMBDA : 0);
+        fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
+                ost->quality / (float)FF_QP2LAMBDA);
         if (enc->coded_frame && (enc->flags&CODEC_FLAG_PSNR))
             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
 
@@ -1548,8 +1554,9 @@ static void print_report(int is_last_report, int64_t timer_start, int64_t cur_ti
         float q = -1;
         ost = output_streams[i];
         enc = ost->enc_ctx;
-        if (!ost->stream_copy && enc->coded_frame)
-            q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
+        if (!ost->stream_copy)
+            q = ost->quality / (float) FF_QP2LAMBDA;
+
         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
diff --git a/ffmpeg.h b/ffmpeg.h
index cf2865fd2f..e43c985f52 100644
--- a/ffmpeg.h
+++ b/ffmpeg.h
@@ -456,6 +456,9 @@ typedef struct OutputStream {
     // number of frames/samples sent to the encoder
     uint64_t frames_encoded;
     uint64_t samples_encoded;
+
+    /* packet quality factor */
+    int quality;
 } OutputStream;
 
 typedef struct OutputFile {
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 62205c9896..cc2f3cce4d 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1054,6 +1054,13 @@ enum AVPacketSideDataType {
      */
     AV_PKT_DATA_AUDIO_SERVICE_TYPE,
 
+    /**
+     * This side data contains an integer value representing the quality
+     * factor of the compressed frame. Allowed range is between 1 (good)
+     * and FF_LAMBDA_MAX (bad).
+     */
+    AV_PKT_DATA_QUALITY_FACTOR,
+
     /**
      * Recommmends skipping the specified number of samples
      * @code
diff --git a/libavcodec/dnxhdenc.c b/libavcodec/dnxhdenc.c
index bbb0065f8a..5eba9f65ed 100644
--- a/libavcodec/dnxhdenc.c
+++ b/libavcodec/dnxhdenc.c
@@ -1050,7 +1050,7 @@ static int dnxhd_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
     DNXHDEncContext *ctx = avctx->priv_data;
     int first_field = 1;
     int offset, i, ret;
-    uint8_t *buf;
+    uint8_t *buf, *sd;
 
     if ((ret = ff_alloc_packet2(avctx, pkt, ctx->cid_table->frame_size)) < 0)
         return ret;
@@ -1103,6 +1103,11 @@ encode_coding_unit:
 
     avctx->coded_frame->quality = ctx->qscale * FF_QP2LAMBDA;
 
+    sd = av_packet_new_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR, sizeof(int));
+    if (!sd)
+        return AVERROR(ENOMEM);
+    *(int *)sd = ctx->qscale * FF_QP2LAMBDA;
+
     pkt->flags |= AV_PKT_FLAG_KEY;
     *got_packet = 1;
     return 0;
diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index 868b99e732..60938cf3c2 100644
--- a/libavcodec/libx264.c
+++ b/libavcodec/libx264.c
@@ -302,8 +302,15 @@ static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
     }
 
     pkt->flags |= AV_PKT_FLAG_KEY*pic_out.b_keyframe;
-    if (ret)
+    if (ret) {
+        uint8_t *sd = av_packet_new_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
+                                              sizeof(int));
+        if (!sd)
+            return AVERROR(ENOMEM);
+        *(int *)sd = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
+
         ctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
+    }
 
     *got_packet = ret;
     return 0;
diff --git a/libavcodec/libxavs.c b/libavcodec/libxavs.c
index ca9539a656..e26204ccbf 100644
--- a/libavcodec/libxavs.c
+++ b/libavcodec/libxavs.c
@@ -117,6 +117,7 @@ static int XAVS_frame(AVCodecContext *avctx, AVPacket *pkt,
     xavs_nal_t *nal;
     int nnal, i, ret;
     xavs_picture_t pic_out;
+    uint8_t *sd;
 
     x4->pic.img.i_csp   = XAVS_CSP_I420;
     x4->pic.img.i_plane = 3;
@@ -191,6 +192,11 @@ static int XAVS_frame(AVCodecContext *avctx, AVPacket *pkt,
 
     avctx->coded_frame->quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
 
+    sd = av_packet_new_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR, sizeof(int));
+    if (!sd)
+        return AVERROR(ENOMEM);
+    *(int *)sd = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA;
+
     x4->out_frame_count++;
     *got_packet = ret;
     return 0;
diff --git a/libavcodec/libxvid.c b/libavcodec/libxvid.c
index 4574f380ba..976066c8a0 100644
--- a/libavcodec/libxvid.c
+++ b/libavcodec/libxvid.c
@@ -771,6 +771,12 @@ static int xvid_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     }
 
     if (xerr > 0) {
+        uint8_t *sd = av_packet_new_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
+                                              sizeof(int));
+        if (!sd)
+            return AVERROR(ENOMEM);
+        *(int *)sd = xvid_enc_stats.quant * FF_QP2LAMBDA;
+
         *got_packet = 1;
 
         avctx->coded_frame->quality = xvid_enc_stats.quant * FF_QP2LAMBDA;
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index fec4eca042..8ddfc02cf3 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -1731,6 +1731,7 @@ int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
 
     /* output? */
     if (s->new_picture.f->data[0]) {
+        uint8_t *sd;
         int growing_buffer = context_count == 1 && !pkt->data && !s->data_partitioning;
         int pkt_size = growing_buffer ? FFMAX(s->mb_width*s->mb_height*64+10000, avctx->internal->byte_buffer_size) - FF_INPUT_BUFFER_PADDING_SIZE
                                               :
@@ -1781,6 +1782,12 @@ vbv_retry:
 
         frame_end(s);
 
+        sd = av_packet_new_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
+                                     sizeof(int));
+        if (!sd)
+            return AVERROR(ENOMEM);
+        *(int *)sd = s->current_picture.f->quality;
+
         if (CONFIG_MJPEG_ENCODER && s->out_format == FMT_MJPEG)
             ff_mjpeg_encode_picture_trailer(&s->pb, s->header_bits);
 
diff --git a/libavcodec/svq1enc.c b/libavcodec/svq1enc.c
index a74d0e4e10..f391c95536 100644
--- a/libavcodec/svq1enc.c
+++ b/libavcodec/svq1enc.c
@@ -574,6 +574,7 @@ static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
 {
     SVQ1EncContext *const s = avctx->priv_data;
     int i, ret;
+    uint8_t *sd;
 
     if ((ret = ff_alloc_packet2(avctx, pkt, s->y_block_width * s->y_block_height *
                              MAX_MB_BYTES*3 + FF_MIN_BUFFER_SIZE)) < 0)
@@ -613,6 +614,11 @@ static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     avctx->coded_frame->pict_type = s->pict_type;
     avctx->coded_frame->key_frame = s->pict_type == AV_PICTURE_TYPE_I;
 
+    sd = av_packet_new_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR, sizeof(int));
+    if (!sd)
+        return AVERROR(ENOMEM);
+    *(int *)sd = pict->quality;
+
     svq1_write_header(s, s->pict_type);
     for (i = 0; i < 3; i++)
         if (svq1_encode_plane(s, i,
diff --git a/libavcodec/version.h b/libavcodec/version.h
index 07b1ae30db..df0f25234a 100644
--- a/libavcodec/version.h
+++ b/libavcodec/version.h
@@ -29,8 +29,8 @@
 #include "libavutil/version.h"
 
 #define LIBAVCODEC_VERSION_MAJOR 56
-#define LIBAVCODEC_VERSION_MINOR  49
-#define LIBAVCODEC_VERSION_MICRO 101
+#define LIBAVCODEC_VERSION_MINOR  50
+#define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \
diff --git a/libavformat/dump.c b/libavformat/dump.c
index 1da29b9462..bb7779daf9 100644
--- a/libavformat/dump.c
+++ b/libavformat/dump.c
@@ -377,6 +377,9 @@ static void dump_sidedata(void *ctx, AVStream *st, const char *indent)
             av_log(ctx, AV_LOG_INFO, "audio service type: ");
             dump_audioservicetype(ctx, &sd);
             break;
+        case AV_PKT_DATA_QUALITY_FACTOR:
+            av_log(ctx, AV_LOG_INFO, "quality factor: %d", *(int *)sd.data);
+            break;
         default:
             av_log(ctx, AV_LOG_WARNING,
                    "unknown side data type %d (%d bytes)", sd.type, sd.size);