On Thu, Jul 6, 2023 at 4:28 AM Thilo Borgmann <thilo.borgm...@mail.de> wrote: > > From: Josef Zlomek <jo...@pex.com> > > Adds the demuxer of animated WebP files. > It supports non-animated, animated, truncated, and concatenated files. > Reading from a pipe (and other non-seekable inputs) is also supported. > > The WebP demuxer splits the input stream into packets containing one frame. > It also marks the key frames properly. > The loop count is ignored by default (same behaviour as animated PNG and GIF), > it may be enabled by the option '-ignore_loop 0'. > > The frame rate is set according to the frame delay in the ANMF chunk. > If the delay is too low, or the image is not animated, the default frame rate > is set to 10 fps, similarly to other WebP libraries and browsers. > The fate suite was updated accordingly. > > Signed-off-by: Josef Zlomek <jo...@pex.com> > --- > Changelog | 1 + > doc/demuxers.texi | 28 + > libavformat/Makefile | 1 + > libavformat/allformats.c | 1 + > libavformat/version.h | 2 +- > libavformat/webpdec.c | 733 ++++++++++++++++++++ > tests/ref/fate/webp-rgb-lena-lossless | 2 +- > tests/ref/fate/webp-rgb-lena-lossless-rgb24 | 2 +- > tests/ref/fate/webp-rgb-lossless | 2 +- > tests/ref/fate/webp-rgb-lossy-q80 | 2 +- > tests/ref/fate/webp-rgba-lossless | 2 +- > tests/ref/fate/webp-rgba-lossy-q80 | 2 +- > 12 files changed, 771 insertions(+), 7 deletions(-) > create mode 100644 libavformat/webpdec.c >
Looks like fate is breaking on fate-exif-image-webp with this change. I also noticed a few corrupt files could hang this. I'll send some examples. > [...] > + // fallback if VP8X chunk was not present > + if (!canvas_width && width > 0) > + canvas_width = width; > + if (!canvas_height && height > 0) > + canvas_height = height; > + } > + > + // WebP format operates with time in "milliseconds", therefore timebase > is 1/100 1/1000 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
