8-bit vs. 10-bit Video For YouTube | 420 vs 422 | H.264 vs ProRes | Atomos Ninja V vs Elgato 4K60
62This video is a HDMI game capture test between the Atomos Ninja V and the Elgato 4K60 Pro Mk2 to test the difference for capturing 8-bit vs. 10-bit video for uploading to YouTube.
The right hand split on the screen was the Atomos Ninja V at 10 bit 4:2:2 and the left hand of the split screen was the Elgato 4K60 Pro MK2 at 8 bit 4:2:0
Both HDMI recording devices recorded the video signal at 4K 60FPS, or to be precise, 4K UHD 3840x2160 at 59.94FPS. The video project matched the resolution and frame rate of the source material and the game play and graphics were from an Xbox Series X which was also set to 4K 60FPS 10Bit 4:2:2.
Because of the HDMI capture card and external HDMI recorder used. This test is also to see if there is any difference between capturing 10 bit vs 8 bit video for a YouTube upload video.
Again, by extension of the HDMI recording devices. This test is also designed to see what difference there is as far as 4:2:2 vs 4:2:0 chroma subsampling is concerned.
Also, this test is comparing codecs for the capture process, in this case, ProRes vs H.264.
And due to the codecs used, this also tests the difference between Intra-frame vs Inter-frame for the source recordings.
Lastly and once again by extension of the recording devices, the test also takes onboard the difference in bit rates of the recorded video codecs. 140Mb/s from the Elgato 4K60 Pro II, which was using a GTX 1650 and Nvidia's NVENC encoder to record the H.264 stream and 1768Mb/s for the ProRes 422 HQ recording from the Atomos Ninja V.
The codec used for the YouTube video master upload was HQX by Grass Valley. This is a 10Bit 4:2:2 codec with minimal compression. The final upload for YouTube is just over 5 minutes and the file size was just under 59GB.
This whole test was designed to see if it's worth recording 10Bit 4:2:2 and uploading 10Bit 4:2:2 for YouTube and to see what is the best YouTube video upload format. As YouTube re-encodes these SDR videos to 8Bit 4:2:0 anyway, is recording 8 bit 4:2:0 all that's necessary anyway?
Could you see any differences?
For more details and further explanation of the test process, here's a link to the video showing and explaining the whole process:
https://youtu.be/KzLnVacaqCw
Also, here's a similar video that was done the exact same way but the master YouTube video upload file was an NVENC H.265 encode at 10 bit 4:2:0 160Mb/s 4K 60FPS:
LINK COMING SOON
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