mtoy changed the topic of #ffmpeg to: Welcome to the FFmpeg USER support channel | Development channel: #ffmpeg-devel | Bug reports: https://ffmpeg.org/bugreports.html | Wiki: https://trac.ffmpeg.org/ | This channel is publically logged | FFmpeg 8.0.1 is released
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<questionperson>
I have several large H.265 videos that I want to transcode into AV1 and I'm thinking instead of doing the transcoding in one go I have some sort of script or something like that which splits off a small part of the of the video, transcodes it and then stitches it at the other completed parts, basically making it encode the video 1-2 minutes at a
<BtbN>
questionperson: keep in mind that more than likely, there isn't much to gain there
<BtbN>
you will either end up with a file of largely the same size, if not bigger, or noticably worse quality
<BtbN>
The only time transcoding is really worth it is if the original uses excessive bitrate, like some phones or cameras built in hardware encoder does
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<questionperson>
CounterPillow: Thank you for the suggestion
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<questionperson>
BtbN: I know about the tradeoffs of transcoding. This video is 8-bit style gameplay that I have captured that I want to archive and thankfully transcoding from the HEVC CQP-16 capture to even AV1 CRF 38 reduces the video stream size to 15% of the original as reported by ab-av1 while being transparent to my eyes even when pixel peeping frames.
<questionperson>
I know that ab-av1's estimations aren't 100% accurate, but on this I trust it because I have transcoded gameplay of the same game again.
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<BtbN>
From my experience 8 bit stuff is super terrible for encoders, since they tend to prefer soft edges
<BtbN>
Also, I wouldn't use CQP, if you mean nvenc. The target-quality mode (-cq) performs much better