Can you upload AV1 videos to YouTube? (libaom-av1)

Описание: Answer: YES, YouTube accepts AV1 video uploads and transcodes them
Download the original file (200 MB): https://www.mediafire.com/file/zciqmm...

When searching about AV1 and YouTube on the Internet, many results talk about how YouTube transcodes existing videos to AV1 for display. However I couldn't find easily whether YouTube accepts AV1-encoded video UPLOADS so I tried to upload an AV1-encoded video and it works.

Google's help page "Supported YouTube file formats" does list HEVC (h265) but not AV1 at the moment: https://support.google.com/youtube/tr...

This video is NOT in AV1 when watched on YouTube. It is best viewed in 1440p resolution as YouTube transcodes to this resolution with VP9 codec while lower resolutions get h264/AVC. Or just download the original file but it may not play smoothly on VLC with lower-end devices.


--- The original video was encoded with:
ffmpeg version 4.3.2-2021-02-27-full_build-www.gyan.dev
https://www.ffmpeg.org/download.html
libaom-av1 2.0.2-1328-gc458ab0b5
-c:v libaom-av1 -cpu-used 4 -crf 34 -b:v 0 -lag-in-frames 35 -c:a libopus -b:a 192K
The single-pass software encoding took about 4h10 on an Intel Core i9-10900k CPU (5166 frames, fps=0.3, bitrate=19486.3kbits/s)


--- The Mario Kart 8 ghost replay was recorded on the Wii U emulator Cemu 1.22.8, with Vulkan + Graphics pack enabled (TV Resolution 5120x2880 then Bilinear downscaled to 2560x1440 in Cemu)
This is the current 1:16.364 world record run on N64 Rainbow Road by Sgt. Guy:    • MK8 World Record - N64 Rainbow Road - 1:16...  


At 0:58 the fireworks suddenly change because I could not get Cemu emulator to not drop frames so the final video is a combination of two recordings and changes between the two to discard segments with dropped frames. Also, despite the Cemu wiki saying "Compatibility: Perfect" for this game ( https://wiki.cemu.info/wiki/Mario_Kart_8 ), Mii faces are not rendered correctly.