Outlander S01e06 Libvpx Exclusive

# Pass 1 ffmpeg -i Outlander_S01E06.mkv \ -c:v libvpx-vp9 -b:v 2M -pass 1 -threads 8 -speed 4 \ -tile-columns 4 -tile-rows 2 -row-mt 1 -g 240 -pix_fmt yuv420p \ -an -f null /dev/null

ffmpeg -i Outlander_S01E06.mkv \ -c:v libvpx-vp9 -crf 20 -b:v 0 -threads 8 -speed 4 \ -tile-columns 4 -tile-rows 2 -row-mt 1 \ -g 240 -pix_fmt yuv420p \ -c:a libopus -b:a 128k \ -metadata title="Outlander S01E06 – The Gilded Cage" \ Outlander_S01E06_vp9_crf20.mkv

Play the file in a modern player (VLC, mpv, Chrome/Firefox) to confirm smooth playback and proper audio sync.

| Symptom | Likely Cause | Fix | |---------|--------------|-----| | | Incorrect -g or missing -copyts when using trimmed inputs | Add -copyts -start_at_zero to preserve timestamps | | Stuttering on low‑end Android phones | Too high a bitrate or using 10‑bit profile without hardware support | Drop bitrate (e.g., -b:v 1.2M ) or force 8‑bit ( -pix_fmt yuv420p ) | | File size unexpectedly huge | Using -crf with -b:v 0 but a very low -crf (e.g., 10) | Raise the CRF to 18–22 for typical 1080p content | | Encoder crashes with “Too many tiles” | Too many tile columns for the chosen resolution or insufficient RAM | Reduce -tile-columns (e.g., -tile-columns 2 ) or increase swap space | | Black frames at start | Missing -g leading to very long GOP and keyframe placement issues | Set -g to roughly 2×fps (e.g., -g 48 for 24 fps) |