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lavc/utils: add VP6F hack for setting correct video size in stream

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For some obscure reasons avcodec_set_dimensions() resets the width/height
so that the resulting value set in the stream is equal to the
corresponding coded_width/height, which is not the same as the correct
width/height in case of the H.264 and VP6F codecs.

This adds a codec-specific hack for VP6F which disables the call to
avcodec_set_dimensions() in avcodec_open2(), like it is done with H264. A
proper fix needs to be found yet.

Fix trac ticket #1386.

Based on a patch by Michael Niedermayer.

Trolled-By: Daemon404

See thread:
Subject: [FFmpeg-devel] [PATCH] ffprobe: Stash and use width and height before opening the codec
Date: Fri,  1 Mar 2013 10:41:34 -0500
This commit is contained in:
Stefano Sabatini 2013-03-18 23:17:55 +01:00
parent d4982b115d
commit 33b0549867
1 changed files with 3 additions and 3 deletions
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6
libavcodec/utils.c
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@ -1080,9 +1080,9 @@ int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *code
if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
goto free_and_end;
//We only call avcodec_set_dimensions() for non h264 codecs so as not to overwrite previously setup dimensions
if (!( avctx->coded_width && avctx->coded_height && avctx->width && avctx->height && avctx->codec_id == AV_CODEC_ID_H264)){
// only call avcodec_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
(avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
if (avctx->coded_width && avctx->coded_height)
avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
else if (avctx->width && avctx->height)