HEVC 10 Bit Canon R5 & nVidia

j.razz wrote on 7/18/2025, 6:13 PM

Been reading the threads relating to HEVC, 10 bit, and specifically how it relates to Canon's implementation of it in the r5 model. It doesn't seem too promising for Vegas Pro 22 and 5080 cards. Here is a link to one of the files: https://www.dropbox.com/scl/fi/awcoamf713bj3xkg4cekk/6C9A4884.MP4?rlkey=nxhtg3jud0ttqfjwstqjsyhja&st=2shvkfgi&dl=0

On my Razer (specs in profile), I can get playback on the timeline of around 19fps in Preview Auto. On my Skytech (specs also in profile), I can't get the 5080 to show video in the preview window and the timeline just shows white on the event instead of the thumbnail. I can switch over, under File I/0 to Ryzen as the hardware decoder and it will load the event thumbnail and playback in the preview window- but the fps are just a tad lower than what I can get on the Razer with the 3080ti card.

I did spend some time testing on the Skytech to see if switching on the HEVC experimental decoding would make any difference, and trying the decoder setting in the video tab of preferences. The only thing that works is choosing the Ryzen option under File I/0.

Any chance there's an update/patch or preference I need to change under Preferences | Internal?

Any chance version 23 will play nice with Canon r5 and Canon r3 files with the 5000 nVidia series? I'd hate to waste all that power when it's just sitting there waiting to be optimally used :)

Lastly, @VEGASDerek if you are looking for another tester for v23 since you are actively in beta now, I'd be happy to lend some time and input.

Comments

Alan-Smithee wrote on 7/18/2025, 7:54 PM
 

Any chance version 23 will play nice with Canon r5 and Canon r3 files with the 5000 nVidia series? I'd hate to waste all that power when it's just sitting there waiting to be optimally used :)

You would sure hope so and it will unleash the following:

 | INFO  | 2025-07-18 08:28:16,991 | NVDEC decodes H264, chroma 4:2:0, bitdepth 8, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:16,992 | NVDEC decodes H264, chroma 4:2:0, bitdepth 10, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:16,993 | NVDEC decodes H264, chroma 4:2:2, bitdepth 8, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:16,994 | NVDEC decodes H264, chroma 4:2:2, bitdepth 10, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:16,995 | NVDEC decodes HEVC, chroma 4:2:0, bitdepth 8, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:16,996 | NVDEC decodes HEVC, chroma 4:2:0, bitdepth 10, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:16,997 | NVDEC decodes HEVC, chroma 4:2:0, bitdepth 12, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:16,998 | NVDEC decodes HEVC, chroma 4:2:2, bitdepth 8, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:16,999 | NVDEC decodes HEVC, chroma 4:2:2, bitdepth 10, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:17,000 | NVDEC decodes HEVC, chroma 4:2:2, bitdepth 12, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:17,001 | NVDEC decodes HEVC, chroma 4:4:4, bitdepth 8, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:17,001 | NVDEC decodes HEVC, chroma 4:4:4, bitdepth 10, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:17,002 | NVDEC decodes HEVC, chroma 4:4:4, bitdepth 12, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:17,003 | NVDEC decodes VP9, chroma 4:2:0, bitdepth 8, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:17,004 | NVDEC decodes VP9, chroma 4:2:0, bitdepth 10, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:17,005 | NVDEC decodes AV1, chroma 4:2:0, bitdepth 8, upto 8192 x 8192
 | INFO  | 2025-07-18 08:28:17,006 | NVDEC decodes AV1, chroma 4:2:0, bitdepth 10, upto 8192 x 8192

andyrpsmith wrote on 7/19/2025, 3:49 AM

Your 3080Ti cannot decode H265 10bit 422, only the new 50 series can.

https://developer.nvidia.com/video-encode-and-decode-gpu-support-matrix-new

Last changed by andyrpsmith on 7/19/2025, 3:50 AM, changed a total of 1 times.

(Intel 3rd gen i5@4.1GHz, 32GB RAM, SSD, 1080Ti GPU, Windows 10) Not now used with Vegas.

13th gen i913900K - water cooled, 96GB RAM, 4TB M2 drive, 4TB games SSD, 2TB video SSD, GPU RTX 4080 Super, Windows 11 pro