On 30/12/09 13:50, Étoile Dièse wrote:
Hello,
Here a little modif for better H264 decoding quality with libavcodec in Opal :
in file opal-3.6.6/plugins/video/H.264/h264-x264.cxx, in the method
H264DecoderContext::H264DecoderContext(), after creating the context I inserted
before line 204 the lines :
_context->workaround_bugs = FF_BUG_AUTODETECT;
_context->error_recognition = FF_ER_AGGRESSIVE;
_context->idct_algo = FF_IDCT_H264;
_context->error_concealment = FF_EC_GUESS_MVS | FF_EC_DEBLOCK;
_context->flags = CODEC_FLAG_INPUT_PRESERVED | CODEC_FLAG_EMU_EDGE;
_context->flags2 = CODEC_FLAG2_BRDO | CODEC_FLAG2_MEMC_ONLY |
CODEC_FLAG2_DROP_FRAME_TIMECODE | CODEC_FLAG2_SKIP_RD | CODEC_FLAG2_CHUNKS;
and the image is much better, at least when called by a Grandstream GXV3000. I
think that the most important one is the flag CODEC_FLAG2_CHUNKS in
_context->flags2.
Jérôme, do you think your information is still current (so that we
integrate it), now that opal supports well H264?
--
Eugen
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