[FFmpeg-devel] [PATCH 0/9] Merge lazy filter initialization in ffmpeg CLI

Michael Niedermayer michael at niedermayer.cc
Fri Feb 10 16:15:29 EET 2017

On Fri, Feb 10, 2017 at 01:35:32PM +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,
> which doesn'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.
> The status of cuvid is unknown, but work in progress.
> 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 (3):
>   ffmpeg_cuvid: adapt for recent filter graph initialization changes
>   avcodec/cuvid: add format mismatch debug logs
>   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

This patchset breaks
./ffmpeg -i Voting_Machine.wmv test.avi


didnt bisect which patch causes it

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

The greatest way to live with honor in this world is to be what we pretend
to be. -- Socrates
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