Artifacts (RPi4)

Delath · February 23, 2023 at 10:53 PM

i may have a similar problem, fresh installation but i get purple/green artifacts while reproducing videos, tried both LE 10 and 11.
RPi4 with (right now) LibreELEC-RPi4.arm-11.0-nightly-20230222-b7fce11.img.gz (sha256)

logs -

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**chewitt** · February 24, 2023 at 5:23 AM

Code

ffmpeg[0x2a3c318]:   Stream #0:0: Video: h264 (High 10), yuv420p10le(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc

There is no broadcast standard for 10-bit H264 (yuv420p10le) media so almost nothing supports hardware decoding of that format, including RPi4. The file will be software decoded by ffmpeg and that might be a challenge. Traditionally Animé fans have used higher spec Intel kit for their collections; there is still zero hardware decode support on the GPU but the CPU has more grunt for the task. I'd suggest experimenting with transcoding 10-bit H264 files to HEVC. The transcode will be slow, but it's a one-time task and can be scripted easily.

Delath · February 24, 2023 at 11:52 AM

Quote from chewitt
Code
ffmpeg[0x2a3c318]:   Stream #0:0: Video: h264 (High 10), yuv420p10le(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc
There is no broadcast standard for 10-bit H264 (yuv420p10le) media so almost nothing supports hardware decoding of that format, including RPi4. The file will be software decoded by ffmpeg and that might be a challenge. Traditionally Animé fans have used higher spec Intel kit for their collections; there is still zero hardware decode support on the GPU but the CPU has more grunt for the task. I'd suggest experimenting with transcoding 10-bit H264 files to HEVC. The transcode will be slow, but it's a one-time task and can be scripted easily.

Seems like watching h265 10-bit will be a better idea then, thanks!

SomeOne · March 2, 2023 at 7:22 PM

Hi, while I found the same issue as you, disabling DRM PRIME decoding works filn for hi10p files that I have, apart occasional frame drops, which is to be expected. And while there isn't too much moving subtitles and/or heavy KFX effects