init_get_bits(gb, buf, 8 * buf_size);
ret = ff_mpeg4_decode_picture_header(s, gb);
- if (s->width) {
+ if (s->width && (!avctx->width || !avctx->height || !avctx->coded_width || !avctx->coded_height)) {
avcodec_set_dimensions(avctx, s->width, s->height);
}
s1->pict_type= s->pict_type;
return ret;
}
-static int mpeg4video_parse_init(AVCodecParserContext *s)
+static av_cold int mpeg4video_parse_init(AVCodecParserContext *s)
{
ParseContext1 *pc = s->priv_data;