v4l2 un support raw video format

[dcboy]

Describe the bug

rk3288:/data/local/tmp # ./v4l2rtspserver /dev/video0
log level:500

[NOTICE] /Users/dcboy/D/github/v4l2rtspserver/main.cpp:294
    Version: 0.2.4-8-g79a13bd-dirty live555 version:2021.12.18
[NOTICE] /Users/dcboy/D/github/v4l2rtspserver/src/V4l2RTSPServer.cpp:37
    Create V4L2 Source.../dev/video0
[NOTICE] /Users/dcboy/D/github/v4l2rtspserver/v4l2wrapper/src/V4l2Device.cpp:133
    driver:uvcvideo capabilities:84200001 mandatory:4000001
[NOTICE] /Users/dcboy/D/github/v4l2rtspserver/v4l2wrapper/src/V4l2Device.cpp:136
    /dev/video0 support capture
[NOTICE] /Users/dcboy/D/github/v4l2rtspserver/v4l2wrapper/src/V4l2Device.cpp:139
    /dev/video0 support streaming
[ERROR] /Users/dcboy/D/github/v4l2rtspserver/v4l2wrapper/src/V4l2Device.cpp:212
    /dev/video0: Cannot set pixelformat to:H264 format is:YUYV
[ERROR] /Users/dcboy/D/github/v4l2rtspserver/v4l2wrapper/src/V4l2Device.cpp:212
    /dev/video0: Cannot set pixelformat to:MJPG format is:YUYV
[ERROR] /Users/dcboy/D/github/v4l2rtspserver/v4l2wrapper/src/V4l2Device.cpp:212
    /dev/video0: Cannot set pixelformat to:JPEG format is:YUYV
[ERROR] /Users/dcboy/D/github/v4l2rtspserver/v4l2wrapper/src/V4l2Device.cpp:83
    Cannot init device:/dev/video0
[NOTICE] /Users/dcboy/D/github/v4l2rtspserver/v4l2wrapper/src/V4l2MmapDevice.cpp:141
VIDIOC_STREAMOFF: Bad file descriptor
VIDIOC_REQBUFS: Bad file descriptor

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Smartphone (please complete the following information):

• Device: android
• OS: android 7.1
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• Version [e.g. 22]

[mpromonet]

Hi,

You may try '-fYUYV'

Best Regards, Michel

[dcboy]

Thx that ok， that h264 encoder is using hardware？

[mpromonet]

Hi,

This program does not encode, it streams over RTSP v4L2 capture frames with supported format (H264, H265, VP8, VP9, JPEG, YUYV is a quick try).

Best Regards, Michel.