May 20, 20251 yr I have one on a shelf and want to use it for h265->h264 transcoding. http://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/details/Orange-Pi-One-Plus.html says it can. H6 Quad-core 64-bit ARM Cortex™-A53 Decoding: H265/HEVC Main/Main10 profile@Level5.2 High-tier ;4K@60fps, up to 6Kx4K@30fps Encoding: H.264 BP/MP/HP encoder up to 4K@25fps or 1080p@60fps Googling finds some old branches of ffmpeg and kernel for H3. Current armbian 25.2.3 comes with 6.12.20-current-sunxi64 which has: sunxi_cedrus v4l2_mem2mem videobuf2_dma_contig videobuf2_v4l2 videodev videobuf2_common mc so the kernel seems to be aware of my specific chip (hence sunxi_cedrus) and modern Kodi seems to support decoding but nothing about encoding. Is that it, encoding is just not supported and my Pi is only good as a player? ps. sadly there is no One Plus specific forum and no common Sunxi forum and for some reason I must choose one of the boards and hence Quadra which seems using H6.
May 20, 20251 yr 1 hour ago, aik said: so the kernel seems to be aware of my specific chip (hence sunxi_cedrus) and modern Kodi seems to support decoding but nothing about encoding. Is that it, encoding is just not supported and my Pi is only good as a player? ps. sadly there is no One Plus specific forum and no common Sunxi forum and for some reason I must choose one of the boards and hence Quadra which seems using H6 If Allwinner does not provide C-source code (kernel, libs, ffmpeg, etc) for recent Linux, I consider it as is; no encoding on Allwinner SoCs. I have several H3 boards, I also dreamed that I once maybe could use that for HEVC->H264 transcoding (low power 24/7 multiple TV channels) but it is not happening. I spent a lot of time to get it working on Pi4 and that breaks at various distro updates or just kernel updates. But RPL then hacks/fixes it in their custom ffmpeg, but it is only Pi4 and also limited, Pi5 has no HW encoding so even they as biggest SBC company give up on it I would say. Rockchip and Intel have fairly easy out-of-the-box solutions, but both not V4L2m2m.
May 20, 20251 yr Author Well, folks say it is being worked on - https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71025ec7f7767 Decoding works so I was hoping it did progress but may be not.
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