Changelog: https://git.ffmpeg.org/gitweb/ffmpeg.git/blob/refs/heads/release/4.2:/Changelog Configuration flag changes: https://git.ffmpeg.org/gitweb/ffmpeg.git/blobdiff/n4.1.4..n4.2:/configure Ignored new configuration flags: --enable-libaribb24 enable ARIB text and caption decoding via libaribb24 [no] --enable-pocketsphinx enable PocketSphinx, needed for asr filter [no] --enable-cuda-nvcc enable Nvidia CUDA compiler [no] --disable-cuda-llvm disable CUDA compilation using clang [autodetect] --disable-msa2 disable MSA2 optimizations The renamed and removed configuration options where not used. I've added a patch to prefer libdav1d over libaom, as libaom wasn't even able to play my sample videos for AV1 (apart from the reduced performance, at least in theory).