Best AV1 settings for HD transcoding using ff works ?
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Hi running Ventura on Apple Silicon and using ff works for transcoding lectures.
Original recordings are shot on iphone SE 2gen in H264 1920x1080, audio is PCM 24 bits.
I normally transcode those in H265 FLAC.I would typically get a 8 FPS conversion ratio at best.Trying to play around with the AV1 options in ff works as latest version has following improvements :
- Improved AV1 encoding (much faster by default).
- Now uses by default the SVT AV1 encoder for AV1.
- By default CRF value is set to 50 for AV1 encoding.
- By default GOP size is now set to 10xFPS for AV1 encoding.
So would like to know what best CRF settings would be. Trying default 50 smoothes out the original, but almost gives it a plastic like coating to the speaker. What would be best value ?
Using the SVT encoder yields a whopping average 85 FPS transcoding, whereas the AOM one never takes off...
What would best practice/tweeks be, if i would like to have the ability to read the AV1 file on both desktop (VLC does the job) and mobile device?