- 13 Mar, 2018 1 commit
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Philipp M. Scholl authored
Thanks for the discussion. Here's the next version, now with /25 and removed ff_log2(). The blocksize of the PCM decoder is hard-coded. This creates unnecessary delay when reading low-rate (<100Hz) streams. This creates issues when multiplexing multiple streams, since other inputs are only opened/read after a low-rate input block was completely read. This patch decreases the blocksize for low-rate inputs, so approximately a block is read every 40ms. This decreases the startup delay when multiplexing inputs with different rates. Signed-off-by:
Philipp M. Scholl <pscholl@bawue.de> Reviewed-by:
Paul B Mahol <onemda@gmail.com> Signed-off-by:
Michael Niedermayer <michael@niedermayer.cc>
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- 23 Feb, 2016 1 commit
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Anton Khirnov authored
Currently, AVStream contains an embedded AVCodecContext instance, which is used by demuxers to export stream parameters to the caller and by muxers to receive stream parameters from the caller. It is also used internally as the codec context that is passed to parsers. In addition, it is also widely used by the callers as the decoding (when demuxer) or encoding (when muxing) context, though this has been officially discouraged since Libav 11. There are multiple important problems with this approach: - the fields in AVCodecContext are in general one of * stream parameters * codec options * codec state However, it's not clear which ones are which. It is consequently unclear which fields are a demuxer allowed to set or a muxer allowed to read. This leads to erratic behaviour depending on whether decoding or encoding is being performed or not (and whether it uses the AVStream embedded codec context). - various synchronization issues arising from the fact that the same context is used by several different APIs (muxers/demuxers, parsers, bitstream filters and encoders/decoders) simultaneously, with there being no clear rules for who can modify what and the different processes being typically delayed with respect to each other. - avformat_find_stream_info() making it necessary to support opening and closing a single codec context multiple times, thus complicating the semantics of freeing various allocated objects in the codec context. Those problems are resolved by replacing the AVStream embedded codec context with a newly added AVCodecParameters instance, which stores only the stream parameters exported by the demuxers or read by the muxers.
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- 10 Feb, 2015 1 commit
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wm4 authored
This is not an API change; the fields were explicitly declared private before. Signed-off-by:
Anton Khirnov <anton@khirnov.net>
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- 20 Apr, 2014 1 commit
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Lukasz Marek authored
Signed-off-by:
Lukasz Marek <lukasz.m.luki2@gmail.com> Signed-off-by:
Michael Niedermayer <michaelni@gmx.at>
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- 07 Dec, 2012 1 commit
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Paul B Mahol authored
Inspired by 92b8c9d8. Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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- 05 Dec, 2012 1 commit
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Paul B Mahol authored
While here remove pts/dts code, it is apparently not needed and cause problems for demuxers that will use such function. Signed-off-by:
Paul B Mahol <onemda@gmail.com>
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- 15 Feb, 2012 1 commit
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Martin Storsjö authored
Prefix the functions/tables brktimegm, pcm_read_seek, dv_offset_reset, voc_get_packet, codec_movaudio_tags, codec_movvideo_tags. After this, lavf has no global symbols without the proper prefix. Signed-off-by:
Martin Storsjö <martin@martin.st>
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- 03 Jul, 2011 1 commit
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Mans Rullgard authored
Signed-off-by:
Mans Rullgard <mans@mansr.com>
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- 19 Mar, 2011 1 commit
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Mans Rullgard authored
Signed-off-by:
Mans Rullgard <mans@mansr.com>
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- 03 Mar, 2011 1 commit
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Anton Khirnov authored
Signed-off-by:
Ronald S. Bultje <rsbultje@gmail.com> (cherry picked from commit 6b4aa5da)
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- 01 Mar, 2011 1 commit
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Anton Khirnov authored
Signed-off-by:
Ronald S. Bultje <rsbultje@gmail.com>
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- 30 Aug, 2010 1 commit
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Aurelien Jacobs authored
Originally committed as revision 24993 to svn://svn.ffmpeg.org/ffmpeg/trunk
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