4k Video down scale to 1080P YouTube Super Slow

Forum|Forum|5 years ago
January 23, 2021
2 replies
1534 views

When I export my 4k video same bitrate using h265 it exports quickly and uses upwards of 90% GPU utilization. The problem is when I upload to YouTube the video takes a few hours before 1080p shows up and I can't wait that long as information can't be a day old.

Downscaling from 4k to 1080p is very slow and only uses 25% of GPU utilization. I keep the same bitrate.. I'm only changing the resolution. I can understand why downscaling might slow it down but lower GPU utilization makes no sense.

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vp@seanpruitt.comAuthor

Participant

Okay... I figured out YouTube takes forever to render my 4k h265 video. 4k h264 is much faster on the YouTube side. When I export although h265 has better compression h264 seems to work best youtube server render farm

A

Andy 1968

Inspiring

I use H.264 and it works OK for me as well. I think it would be better than using Pro Res. The GPU and Quick Sync cannot encode and decode Pro Res but they can encode and decode some variations of H.264/265.

vp@seanpruitt.comAuthor

Participant

I find staying with native resolution and settings makes exporting from Adobe premiere much faster. H264 seems to be the best for most platforms. My GPU gets the highest utilization when I export native resolution. Not sure if that is something I'm doing wrong or system resources prefer native exports.

Averdahl

Community Expert

When I export my 4k video same bitrate using h265

H.265 is a highly compressed format and it takes much computer power to work with. It may be so that YouYube have trouble handling H.265 fast enough. Try to export your 4K video to ProRes and upload that file directly to YouTube. It may be a no go depending of the lenght of the video and your upload speed since the file size will be bigger.

Downscale 4K to 1080 using the GPU will be slow the less VRAM you have on the card. If you have 4GB VRAM it will be significantly slower than if you have 12 GB VRAM.

vp@seanpruitt.comAuthor

Participant

I have an Asus Turbo GeForce RTX 2070 Super Turbo 8GB GPU 64GB RAM 3200 and i9-7960x cpu. Should I change the squence to Apple ProRes or just export as ProRes? I normally just drop the video on the timeline matching video settings automatically creating the squence. I find anytime I downscale it causes the export to be very slow but why is my GPU utilization slower.

Averdahl

Community Expert

Should I change the squence to Apple ProRes

No, just export.

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