3/31/2024 0 Comments Convert gif to webm ffmpeg![]() Support for the loading attribute on img elements at the time of writing ( See current support here). By reducing the amount of data a user needs to download to view content, they are able to load assets faster as well as use less mobile data (which can be very expensive, especially for us Canadians). This is something very important for Twitter, where users may encounter many GIFs while scrolling their timeline (which translates to more data being downloaded on a user's phone). Actually, when you post a GIF on Twitter, Twitter converts the GIF into a video, which dramatically reduces the file size. Video files are much smaller than GIFs and they are more easily decoded in the browsers compared to GIFs. However, there is a better alternative to using GIFs and that alternative is to use videos instead. GIFs are not optimized to be used on the web: their file size is very large and decoding GIFs in the browser is not a very performant operation. With that being said, GIFs are not good for the web. They are used on Twitter as a way to react to something, they are used in blog posts to make them more interesting, and they are used for the majority of conversations amongst coworkers on Slack (or maybe that's just me?). This fixes the issue, but may lead to bigger webp files in case of non-transparent input frames.GIFs are an omnipresent part of the internet. +++ -134,7 +134,7 static int flush(AVFormatContext *s, int trailer, int64_t pts)Īvio_wl24(s->pb, pts - w->last_pkt->pts) Īvio_write(s->pb, w->last_pkt->data + skip, w->last_pkt->size - skip) The simplest fix is to set the disposal method to 1, like this: For transparent frames, that is incorrect. This sets the disposal method of the ANMF chunk to 0, which means the previous canvas contents are retained. The bug is located in line 137 in webpenc.c. Video:775kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown ffmpeg -c:v libvpx-vp9 -i in.webm -c:v libwebp -loop 0 out.webpįfmpeg version N-105642-g538be75a69 Copyright (c) 2000-2022 the FFmpeg developersīuilt with Apple clang version 13.0.0 (clang-1300.0.29.30)Ĭonfiguration: -pkg-config-flags=-static -disable-ffplay -disable-ffprobe -disable-doc -disable-htmlpages -disable-manpages -disable-podpages -disable-txtpages -disable-libxcb -disable-lzma -disable-sdl2 -enable-libvpx -enable-libwebp ![]() ![]() It is indeed an FFmpeg issue (latest git-master) and can be reproduced by encoding a webm file with transparent background to an animated webp file file via e.g. Video:41kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown You may want to consider passing in YUV instead for lossy encoding.įrame= 37 fps=0.0 q=-0.0 Lsize= 41kB time=00:00:01.80 bitrate= 187.6kbits/s speed=14.4x Using libwebp for RGB-to-YUV conversion. Ffmpeg version N-93933-geae251ead9 Copyright (c) 2000-2019 the FFmpeg developersĬonfiguration: -enable-gpl -enable-version3 -enable-sdl2 -enable-fontconfig -enable-gnutls -enable-iconv -enable-libass -enable-libdav1d -enable-libbluray -enable-libfreetype -enable-libmp3lame -enable-libopencore-amrnb -enable-libopencore-amrwb -enable-libopenjpeg -enable-libopus -enable-libshine -enable-libsnappy -enable-libsoxr -enable-libtheora -enable-libtwolame -enable-libvpx -enable-libwavpack -enable-libwebp -enable-libx264 -enable-libx265 -enable-libxml2 -enable-libzimg -enable-lzma -enable-zlib -enable-gmp -enable-libvidstab -enable-libvorbis -enable-libvo-amrwbenc -enable-libmysofa -enable-libspeex -enable-libxvid -enable-libaom -enable-libmfx -enable-amf -enable-ffnvcodec -enable-cuvid -enable-d3d11va -enable-nvenc -enable-nvdec -enable-dxva2 -enable-avisynth -enable-libopenmptĭuration: 00:00:02.00, start: 0.000000, bitrate: 70 kb/s ![]()
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