Editing Openai/6957d2e8-b738-8008-987a-09a5d9f29bc8 (section)

=== Assistant: That error is because of this combo: ===
That error is because of this combo:
* -qp 0 = lossless
* -profile:v high = forces “High” profile

x264 refuses that: “high profile doesn't support lossless”. For lossless, x264 switches to a different profile (typically High 4:4:4 Predictive) automatically. When you force high, it can’t.

===== Use this: =====

<syntaxhighlight lang="bash">ffmpeg -i "NEA MADALIN E DRAG QUEEN ACUM [P9gZEDOz9eE].mkv" -filter_complex \
"[0:v]trim=start=62.2:end=133.2,setpts=PTS-STARTPTS[v]; \
 [0:a]atrim=start=62.2:end=133.2,asetpts=PTS-STARTPTS[a]" \
-map "[v]" -map "[a]" \
-c:v libx264 -preset veryslow -qp 0 -pix_fmt yuv420p \
-c:a libopus -b:a 160k -ar 48000 -ac 2 \
clip_01_0102p2-0213p2.mkv

</syntaxhighlight>

That will cut exactly (including milliseconds) and keep video lossless.

===== Even though your pixel format stays yuv420p, a lossless x264 encode often signals a profile like High 4:4:4 Predictive. Some hardware players (TVs/phones) may not like that, even if VLC/mpv do. =====

If you want maximum compatibility while still being visually indistinguishable from the source, do this instead:

<syntaxhighlight lang="bash">ffmpeg -i "NEA MADALIN E DRAG QUEEN ACUM [P9gZEDOz9eE].mkv" -filter_complex \
"[0:v]trim=start=62.2:end=133.2,setpts=PTS-STARTPTS[v]; \
 [0:a]atrim=start=62.2:end=133.2,asetpts=PTS-STARTPTS[a]" \
-map "[v]" -map "[a]" \
-c:v libx264 -crf 16 -preset slow -pix_fmt yuv420p -profile:v high -level 4.0 \
-c:a libopus -b:a 160k -ar 48000 -ac 2 \
clip_01_0102p2-0213p2.mkv

</syntaxhighlight>

===== Just change 62.2 / 133.2 to e.g. 62.237 / 133.041. =====

If you send the ms-precise times for the other 3 clips, I’ll spit out all 4 final commands in the same style.