diff options
| -rw-r--r-- | libavcodec/mpeg12.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavcodec/mpeg12.c b/libavcodec/mpeg12.c index c5b39e1c92..7250226fd3 100644 --- a/libavcodec/mpeg12.c +++ b/libavcodec/mpeg12.c @@ -1858,6 +1858,12 @@ static int mpeg_decode_slice(AVCodecContext *avctx, } }else{ //second field int i; + + if(!s->current_picture_ptr){ + fprintf(stderr, "first field missing\n"); + return -1; + } + for(i=0; i<4; i++){ s->current_picture.data[i] = s->current_picture_ptr->data[i]; if(s->picture_structure == PICT_BOTTOM_FIELD){ @@ -2266,6 +2272,8 @@ static int mpeg_decode_frame(AVCodecContext *avctx, /* skip everything if we are in a hurry>=5 */ if(avctx->hurry_up>=5) break; + if (!s->mpeg_enc_ctx_allocated) break; + ret = mpeg_decode_slice(avctx, picture, start_code, s->buffer, input_size); |