If you missed S03E03 (Adaptive Bitrate Ladders with FFmpeg), catch up here . The RSS feed has been updated with the new episode.
Posted on: April 14, 2026 Category: Codec Engineering / Video Encoding upload s03e04 libvpx
# The magic incantation for high-quality VOD from a raw YUV source ffmpeg -i input.yuv -c:v libvpx-vp9 -b:v 2M -crf 28 -row-mt 1 -tile-columns 2 -frame-parallel 1 -speed 2 -lag-in-frames 25 -auto-alt-ref 1 -arnr-maxframes 7 output.webm Next week, we’re moving from using libvpx to hacking libvpx. We’ll patch the source code to add a custom rate control log that exports per-frame QP values to Prometheus. Yes, live observability for your encoder. Community Challenge Your turn: Encode a 10-second clip of your desktop screen capture using the Low-latency preset above. Then, run vpxdec with -v to dump the frame timings. Post your average encode time per frame in the comments below. If you missed S03E03 (Adaptive Bitrate Ladders with
— The Video Dev Team
The fastest (real-time) encode wins a shoutout in S03E06. Stay tuned, and keep encoding. We’ll patch the source code to add a
Welcome back to the series. If you’ve been following along with Season 3, you know we’ve been building a foundation for modern, royalty-free video delivery. Today, we’re hitting a major milestone:
