On Thu, Jun 8, 2023 at 7:21 AM Thilo Borgmann <thilo.borgm...@mail.de> wrote: > > From: Josef Zlomek <jo...@pex.com> > > Fixes: 4907 > > Adds support for decoding of animated WebP. > > The WebP decoder adds the animation related features according to the specs: > https://developers.google.com/speed/webp/docs/riff_container#animation > The frames of the animation may be smaller than the image canvas. > Therefore, the frame is decoded to a temporary frame, > then it is blended into the canvas, the canvas is copied to the output frame, > and finally the frame is disposed from the canvas. > > The output to AV_PIX_FMT_YUVA420P/AV_PIX_FMT_YUV420P is still supported. > The background color is specified only as BGRA in the WebP file > so it is converted to YUVA if YUV formats are output. > > Signed-off-by: Josef Zlomek <jo...@pex.com> > --- > Changelog | 1 + > libavcodec/codec_desc.c | 3 +- > libavcodec/version.h | 2 +- > libavcodec/webp.c | 714 ++++++++++++++++++++++++++++++++++++---- > 4 files changed, 658 insertions(+), 62 deletions(-) > > [...] > + > + bytestream2_skip(&gb, 2); // loop count is ignored
TODO? APNG and GIF support looping and have -ignore_loop to control it. _______________________________________________ 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".
