FFmpeg 8.1 LTS line - one of 4 tiers from the ffmpegkit-maintained FFmpegKit fork (Free-81/Basic-81/Full-81/Full GPL-81) - this is FREE: VP8/VP9 + AV1 encode/decode (libvpx, libaom, dav1d), Opus/Vorbis/Speex audio, software-only. Coexists with the 6.0 and 7.1 LTS lines - distinct artifact, does not replace them. Need H.264/H.265 encode, hardware codec access, TLS, OCR, Whisper transcription, subtitles or SRT? See the Basic-81/Full-81/Full GPL-81 tiers via the Project URL link below.