diff --git a/libavcodec/cyuv.c b/libavcodec/cyuv.c
index 3bc6ba4981..9648799f09 100644
--- a/libavcodec/cyuv.c
+++ b/libavcodec/cyuv.c
@@ -52,7 +52,7 @@ static av_cold int cyuv_decode_init(AVCodecContext *avctx)
     s->width = avctx->width;
     /* width needs to be divisible by 4 for this codec to work */
     if (s->width & 0x3)
-        return -1;
+        return AVERROR_INVALIDDATA;
     s->height = avctx->height;
     avcodec_get_frame_defaults(&s->frame);
 
@@ -84,6 +84,7 @@ static int cyuv_decode_frame(AVCodecContext *avctx,
     unsigned char cur_byte;
     int pixel_groups;
     int rawsize = s->height * FFALIGN(s->width,2) * 2;
+    int ret;
 
     if (avctx->codec_id == AV_CODEC_ID_AURA) {
         y_table = u_table;
@@ -100,7 +101,7 @@ static int cyuv_decode_frame(AVCodecContext *avctx,
     } else {
         av_log(avctx, AV_LOG_ERROR, "got a buffer with %d bytes when %d were expected\n",
                buf_size, 48 + s->height * (s->width * 3 / 4));
-        return -1;
+        return AVERROR_INVALIDDATA;
     }
 
     /* pixel data starts 48 bytes in, after 3x16-byte tables */
@@ -111,9 +112,9 @@ static int cyuv_decode_frame(AVCodecContext *avctx,
 
     s->frame.buffer_hints = FF_BUFFER_HINTS_VALID;
     s->frame.reference = 0;
-    if (ff_get_buffer(avctx, &s->frame) < 0) {
+    if ((ret = ff_get_buffer(avctx, &s->frame)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
-        return -1;
+        return ret;
     }
 
     y_plane = s->frame.data[0];
diff --git a/libavcodec/eatgv.c b/libavcodec/eatgv.c
index b105ea539c..9dca2399b9 100644
--- a/libavcodec/eatgv.c
+++ b/libavcodec/eatgv.c
@@ -75,7 +75,7 @@ static int unpack(const uint8_t *src, const uint8_t *src_end, unsigned char *dst
         src += 2;
 
     if (src_end - src < 3)
-        return -1;
+        return AVERROR_INVALIDDATA;
     size = AV_RB24(src);
     src += 3;
 
@@ -148,7 +148,7 @@ static int tgv_decode_inter(TgvContext * s, const uint8_t *buf, const uint8_t *b
     const unsigned char *blocks_raw;
 
     if(buf_end - buf < 12)
-        return -1;
+        return AVERROR_INVALIDDATA;
 
     num_mvs           = AV_RL16(&buf[0]);
     num_blocks_raw    = AV_RL16(&buf[2]);
@@ -177,7 +177,7 @@ static int tgv_decode_inter(TgvContext * s, const uint8_t *buf, const uint8_t *b
     mvbits = (num_mvs*2*10+31) & ~31;
 
     if (buf_end - buf < (mvbits>>3)+16*num_blocks_raw+8*num_blocks_packed)
-        return -1;
+        return AVERROR_INVALIDDATA;
 
     init_get_bits(&gb, buf, mvbits);
     for (i=0; i<num_mvs; i++) {
@@ -202,7 +202,7 @@ static int tgv_decode_inter(TgvContext * s, const uint8_t *buf, const uint8_t *b
 
     if (get_bits_left(&gb) < vector_bits *
         (s->avctx->height/4) * (s->avctx->width/4))
-        return -1;
+        return AVERROR_INVALIDDATA;
 
     /* read vectors and build frame */
     for(y=0; y<s->avctx->height/4; y++)
@@ -260,7 +260,7 @@ static int tgv_decode_frame(AVCodecContext *avctx,
     int buf_size = avpkt->size;
     TgvContext *s = avctx->priv_data;
     const uint8_t *buf_end = buf + buf_size;
-    int chunk_type;
+    int chunk_type, ret;
 
     if (buf_end - buf < EA_PREAMBLE_SIZE)
         return AVERROR_INVALIDDATA;
@@ -272,7 +272,7 @@ static int tgv_decode_frame(AVCodecContext *avctx,
         int pal_count, i;
         if(buf_end - buf < 12) {
             av_log(avctx, AV_LOG_WARNING, "truncated header\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
 
         s->width  = AV_RL16(&buf[0]);
@@ -291,8 +291,8 @@ static int tgv_decode_frame(AVCodecContext *avctx,
         }
     }
 
-    if (av_image_check_size(s->width, s->height, 0, avctx))
-        return -1;
+    if ((ret = av_image_check_size(s->width, s->height, 0, avctx)) < 0)
+        return ret;
 
     /* shuffle */
     FFSWAP(AVFrame, s->frame, s->last_frame);
@@ -317,7 +317,7 @@ static int tgv_decode_frame(AVCodecContext *avctx,
         s->frame.pict_type = AV_PICTURE_TYPE_I;
         if (unpack(buf, buf_end, s->frame.data[0], s->avctx->width, s->avctx->height)<0) {
             av_log(avctx, AV_LOG_WARNING, "truncated intra frame\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
     }else{
         if (!s->last_frame.data[0]) {
@@ -328,7 +328,7 @@ static int tgv_decode_frame(AVCodecContext *avctx,
         s->frame.pict_type = AV_PICTURE_TYPE_P;
         if (tgv_decode_inter(s, buf, buf_end)<0) {
             av_log(avctx, AV_LOG_WARNING, "truncated inter frame\n");
-            return -1;
+            return AVERROR_INVALIDDATA;
         }
     }
 
diff --git a/libavcodec/txd.c b/libavcodec/txd.c
index 2dd82598a4..b5b34acf3c 100644
--- a/libavcodec/txd.c
+++ b/libavcodec/txd.c
@@ -51,6 +51,7 @@ static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
     unsigned int y, v;
     uint8_t *ptr;
     uint32_t *pal;
+    int ret;
 
     bytestream2_init(&gb, avpkt->data, avpkt->size);
     version         = bytestream2_get_le32(&gb);
@@ -65,7 +66,7 @@ static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
     if (version < 8 || version > 9) {
         av_log(avctx, AV_LOG_ERROR, "texture data version %i is unsupported\n",
                                                                     version);
-        return -1;
+        return AVERROR_PATCHWELCOME;
     }
 
     if (depth == 8) {
@@ -74,19 +75,19 @@ static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
         avctx->pix_fmt = AV_PIX_FMT_RGB32;
     } else {
         av_log(avctx, AV_LOG_ERROR, "depth of %i is unsupported\n", depth);
-        return -1;
+        return AVERROR_PATCHWELCOME;
     }
 
     if (p->data[0])
         avctx->release_buffer(avctx, p);
 
-    if (av_image_check_size(w, h, 0, avctx))
-        return -1;
+    if ((ret = av_image_check_size(w, h, 0, avctx)) < 0)
+        return ret;
     if (w != avctx->width || h != avctx->height)
         avcodec_set_dimensions(avctx, w, h);
-    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->pict_type = AV_PICTURE_TYPE_I;
@@ -149,7 +150,7 @@ static int txd_decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
 
 unsupported:
     av_log(avctx, AV_LOG_ERROR, "unsupported d3d format (%08x)\n", d3d_format);
-    return -1;
+    return AVERROR_PATCHWELCOME;
 }
 
 static av_cold int txd_end(AVCodecContext *avctx) {