diff --git a/libavcodec/flicvideo.c b/libavcodec/flicvideo.c
index eb70249ef7..9e35f48e4c 100644
--- a/libavcodec/flicvideo.c
+++ b/libavcodec/flicvideo.c
@@ -787,7 +787,7 @@ static int flic_decode_frame(AVCodecContext *avctx,
     /* the finite set of possibilites allowable by here. */
     /* But in case we do, just error out. */
     av_log(avctx, AV_LOG_ERROR, "Unknown FLC format, my science cannot explain how this happened.\n");
-    return AVERROR_INVALIDDATA;
+    return AVERROR_BUG;
 }
 
 
diff --git a/libavcodec/loco.c b/libavcodec/loco.c
index b437aaa214..b530fd6503 100644
--- a/libavcodec/loco.c
+++ b/libavcodec/loco.c
@@ -168,15 +168,15 @@ static int decode_frame(AVCodecContext *avctx,
     int buf_size = avpkt->size;
     LOCOContext * const l = avctx->priv_data;
     AVFrame * const p = &l->pic;
-    int decoded;
+    int decoded, ret;
 
     if(p->data[0])
         avctx->release_buffer(avctx, p);
 
     p->reference = 0;
-    if(ff_get_buffer(avctx, p) < 0){
+    if ((ret = ff_get_buffer(avctx, p)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
-        return -1;
+        return ret;
     }
     p->key_frame = 1;
 
@@ -245,7 +245,7 @@ static av_cold int decode_init(AVCodecContext *avctx){
     if (avctx->extradata_size < 12) {
         av_log(avctx, AV_LOG_ERROR, "Extradata size must be >= 12 instead of %i\n",
                avctx->extradata_size);
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     version = AV_RL32(avctx->extradata);
     switch(version) {
@@ -276,7 +276,7 @@ static av_cold int decode_init(AVCodecContext *avctx){
         break;
     default:
         av_log(avctx, AV_LOG_INFO, "Unknown colorspace, index = %i\n", l->mode);
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
     if(avctx->debug & FF_DEBUG_PICT_INFO)
         av_log(avctx, AV_LOG_INFO, "lossy:%i, version:%i, mode: %i\n", l->lossy, version, l->mode);
diff --git a/libavcodec/vcr1.c b/libavcodec/vcr1.c
index e51ef15dbc..2dc12c88ce 100644
--- a/libavcodec/vcr1.c
+++ b/libavcodec/vcr1.c
@@ -159,42 +159,3 @@ AVCodec ff_vcr1_decoder = {
     .capabilities   = CODEC_CAP_DR1,
     .long_name      = NULL_IF_CONFIG_SMALL("ATI VCR1"),
 };
-
-/* Disable the encoder. */
-#undef CONFIG_VCR1_ENCODER
-#define CONFIG_VCR1_ENCODER 0
-
-#if CONFIG_VCR1_ENCODER
-
-#include "put_bits.h"
-
-static int vcr1_encode_frame(AVCodecContext *avctx, unsigned char *buf,
-                             int buf_size, void *data)
-{
-    VCR1Context *const a = avctx->priv_data;
-    AVFrame *pict        = data;
-    AVFrame *const p     = &a->picture;
-    int size;
-
-    *p           = *pict;
-    p->pict_type = AV_PICTURE_TYPE_I;
-    p->key_frame = 1;
-
-    avpriv_align_put_bits(&a->pb);
-    flush_put_bits(&a->pb);
-
-    size = put_bits_count(&a->pb) / 32;
-
-    return size * 4;
-}
-
-AVCodec ff_vcr1_encoder = {
-    .name           = "vcr1",
-    .type           = AVMEDIA_TYPE_VIDEO,
-    .id             = AV_CODEC_ID_VCR1,
-    .priv_data_size = sizeof(VCR1Context),
-    .init           = vcr1_common_init,
-    .encode         = vcr1_encode_frame,
-    .long_name      = NULL_IF_CONFIG_SMALL("ATI VCR1"),
-};
-#endif /* CONFIG_VCR1_ENCODER */