On 07/05/2026 10:53, Erikas Bitovtas wrote:
Running the following ffmpeg command:
ffmpeg -i Videos/big_buck_bunny_1080p_H264_AAC_25fps_7200K.mp4
-input_format h264 -c:v vp8_v4l2m2m -pix_fmt nv12
big_buck_bunny_1080p_H264_AAC_25fps_7200K.vp8.mp4
Fails with:
[vp8_v4l2m2m @ 0xffffb0386870] Using device /dev/video1
[vp8_v4l2m2m @ 0xffffb0386870] driver 'qcom-venus' on card 'Qualcomm
Venus video encoder' in mplane mode
[vp8_v4l2m2m @ 0xffffb0386870] requesting formats: output=NV12/nv12
capture=VP80/none
[mp4 @ 0xffffb4b3b7e0] Could not find tag for codec vp8 in stream #0,
codec not currently supported in container
This is an ffmpeg error, rejecting saving vp8 in an mp4 file. Anyway
this would do nothing on the encoder /dev/video1 is 'Qualcomm Venus
video encoder' above
Try:
v4l2-ctl --verbose
--set-fmt-video-out=width=1280,height=720,pixelformat=NV12
--set-selection-output target=crop,top=0,left=0,width=1280,height=720
--set-fmt-video=pixelformat=H264 --stream-mmap --stream-out-mmap
--stream-from=/media/cyclists_1280x720_92frames.yuv
--stream-to=/tmp/cyclists_1280x720_92frames.h264 -d /dev/video1
v4l2-ctl --verbose
--set-fmt-video-out=width=1280,height=720,pixelformat=NV12
--set-selection-output target=crop,top=0,left=0,width=1280,height=720
--set-fmt-video=pixelformat=HEVC --stream-mmap --stream-out-mmap
--stream-from=/media/cyclists_1280x720_92frames.yuv
--stream-to=/tmp/cyclists_1280x720_92frames.hevc -d /dev/video1
---
bod
