[FFmpeg-devel] [PATCH v2 0/8] Merge lazy filter initialization in ffmpeg CLI

[Michael Niedermayer]

On Wed, Feb 15, 2017 at 03:22:33PM +0100, Michael Niedermayer wrote:
> On Wed, Feb 15, 2017 at 10:24:15AM +0100, wm4 wrote:
> > These patches merge the previously skipped Libav commits, which made
> > avconv lazily initialize libavfilter graphs. This means the filters
> > are initialized with the actual output format, instead of whatever
> > libavformat reports.
> > 
> > It's a prerequisite to making hardware decoding support saner, as
> > hardware decoders will output a different pixfmt than the software
> > format reported by libavformat. This can be seen on ffmpeg_qsv.c
> > and ffmpeg_cuvid.c, which don't lose any functionality, even though
> > half of the code is removed.
> > 
> > There are some differences in how ffmpeg.c and avconv.c filter-flow
> > works. Also, avconv.c doesn't have sub2video. Relatively intrusive
> > changes were required.
> > 
> > I plan to push this tomorrow, except if critical errors are found.
> > 
> > Anton Khirnov (4):
> >   ffmpeg: do packet ts rescaling in write_packet()
> >   ffmpeg: init filtergraphs only after we have a frame on each input
> >   ffmpeg: move flushing the queued frames to configure_filtergraph()
> >   ffmpeg: restructure sending EOF to filters
> > 
> > Timo Rothenpieler (2):
> >   ffmpeg_cuvid: adapt for recent filter graph initialization changes
> >   avcodec/cuvid: update hw_frames_ctx reference after get_format call
> > 
> > wm4 (2):
> >   ffmpeg: make sure packets put into the muxing FIFO are refcounted
> >   ffmpeg: fix printing of filter input/output names
> 
> breaks: (Application provided invalid, non monotonically increasing dts to muxer in stream 1: 1824120 >= 70020)
> 
> ./ffmpeg -skip_frame nokey -ss 20  -i ~/tickets/2024/dvbsubtest.ts -qscale 2  -scodec dvbsub -t 6   -an file.ts

heres another issue:

./ffmpeg -i ~/tickets/3015/test_video -filter:a apad -f flv -vcodec flv -ar 22050 -shortest file.flv

the output files looses a audio stream


[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

The worst form of inequality is to try to make unequal things equal.
-- Aristotle
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