Zoom-style video conference recording. H.264 with -tune zerolatency for real-time encoding, 4 Mbps for crisp screen-share content, Opus for voice-optimized low-latency audio, MKV because it handles unfinished writes gracefully.
| Video Codec | H.264 |
| Bitrate | 4M |
| Resolution | 1080p |
| Audio | Opus |
| Container | MKV |
ffmpeg -i input.mp4 -c:v libx264 -b:v 4M -tune zerolatency -c:a libopus -b:a 48k output.mkvThe -tune zerolatency flag disables B-frames, reduces lookahead to 0, and uses a single-frame VBV buffer. This makes encoding instant but reduces compression efficiency by 20-30%. It is essential for real-time conferencing.
A new FFmpeg encoding puzzle every day. Six tries, in the browser or from your terminal.