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I was following this posts: and: https://wvthoog.nl/nanopi-ov5640-camera/ 1. decompile dtb to dts 2. modify dts: 1) add reversed-memory, 2) disable cedrus, add cedar_ve 3. compile dts to dtb, reboot 4. /dev/cedar_ve appear 5. run ffmpeg

Hi, I've tested your code on an OrangepiP. It can encode h264 1080p at 28fps. root@orangepipc:~/FFmpeg# ./ffmpeg -s 1920x1080 -pix_fmt nv12 -f rawvideo -stream_loop -1 -i xilinx_1080p_nv12.yuv -pix_fmt nv12 -c:v cedrus264 -f null - ffmpeg version N-103905-gafd516bd9c Copyright (c) 2000-2021 the FFmpeg developers built with gcc 8 (Debian 8.3.0-6) configuration: --enable-nonfree --enable-gpl --enable-version3 --enable-libx264 --enable-libmp3lame --enable-libpulse --enable-libv4l2 libavutil 57. 7.100 / 57. 7.100 libavcodec 59. 9.101 / 59. 9.101 libavformat 59. 5.100 / 59. 5.100 libavdevice 59. 0.101 / 59. 0.101 libavfilter 8. 10.100 / 8. 10.100 libswscale 6. 1.100 / 6. 1.100 libswresample 4. 0.100 / 4. 0.100 libpostproc 56. 0.100 / 56. 0.100 [rawvideo @ 0x27d72c0] Estimating duration from bitrate, this may be inaccurate Input #0, rawvideo, from 'xilinx_1080p_nv12.yuv': Duration: 00:00:04.12, start: 0.000000, bitrate: 622080 kb/s Stream #0:0: Video: rawvideo (NV12 / 0x3231564E), nv12, 1920x1080, 622080 kb/s, 25 tbr, 25 tbn Stream mapping: Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (cedrus264)) Press [q] to stop, [?] for help [VDPAU SUNXI] VE version 0x1680 opened. Output #0, null, to 'pipe:': Metadata: encoder : Lavf59.5.100 Stream #0:0: Video: h264, nv12(progressive), 1920x1080, q=2-31, 200 kb/s, 25 fps, 25 tbn Metadata: encoder : Lavc59.9.101 cedrus264 frame= 465 fps= 28 q=-0.0 Lsize=N/A time=00:00:18.60 bitrate=N/A speed=1.12x video:5560kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

in youtube clip, he said: "short the emmc clk pin and ground".