Usage questions

[jriker1]

Been trying to identify a "usable" AV1 encoder.

Libaom no support for HDR10 in any encoders yet.

SVT-AV1 using the stand alone encoder piping to ffmpeg or the SVT-AV1 library in ffmpeg are returning odd results. Like 1GB files for 1 hour 45 minute 4k HDR10 videos with CRF 26 and preset 3. Plus weird encoding times. ffmpeg straight takes 2 hours on my Ryzen 7950x. ffmpeg piping to svtav1encapp takes 11 hours but same basic final results.

Rav1e I'm most hopeful for but lack of documentation is a shame. Some questions here:

1. I can't use rav1e.exe by itself as the file it requires is different than all my files which are mp4 or mkv. Tried piping from ffmpeg to rav1e like I do with svt-av1 but keeps erroring. Like this:

ffmpeg.exe -i <video>.mkv -f yuv4mpegpipe -pix_fmt yuv420p10le - | rav1e.exe --quantizer 50 --speed 1 --primaries BT2020 --transfer SMPTE2084 --matrix BT2020NCL --mastering-display "G(0.17,0.797)B(0.131,0.046)R(0.708,0.292)WP(0.3127,0.329)L(1000,0.0005)" --content-light "639,243" - -o rav1e.ivf

Any idea if I can do this or what I need to change in formatting?

2. I do not have a nice PC monitor (15 years old) and trying to compare video output on a TV screen thru various players and switching footage isn't really easy to do. What would a recommended setting be for rav1e for encoding Bluray video to AV1 format for storage? Want no noticeable loss of quality but also not a 60GB file.

3. Is passing mastering-display and content-light information to ffmpeg with librav1e still broke as can't get that to work either.

Kind of batting zero right now.

[jriker1]

Note outside of waiting for thoughts on the above, came up with this that may work for item 1.

ffmpeg.exe -hide_banner -loglevel quiet -i <video>.mkv -an -pix_fmt yuv420p10le -strict -1 -f yuv4mpegpipe - | rav1e.exe - --speed 1 --tile-rows 8 --tile-cols 8 --threads 28 --quantizer 50 --primaries bt2020 --transfer smpte2084 --matrix bt2020ncl --keyint 300 --level 5.1 --mastering-display G(0.17,0.797)B(0.131,0.046)R(0.708,0.292)WP(0.3127,0.329)L(1000.0,0.005) --content-light "832,166" --range limited -y --output "ffmpeg-pip-rav1e-q50s1.ivf"

Though it's a blur everything I'm testing, think this may only use like 16% of my CPU.