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borisisok/mirabox_rec_ffmpgeg.sh

Last active April 6, 2022 19:36
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Mirabox - Record via ffmpeg
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mirabox_rec_ffmpgeg.sh
# The Linux version
VDEV=$(v4l2-ctl --list-devices | grep -A1 -i mirabo | grep /dev | sed 's/\s//g')
ADEV=$(grep "Capture.*Mira" /proc/asound/cards | cut -f2 -d" ")
TS=$(date +%Y%m%d_%H%M%S)
nohup ffmpeg -f alsa -ac 2 -i hw:${ADEV=},0 -f video4linux2 -i ${VDEV} -acodec ac3 -ab 128k -f matroska -movflags frag_keyframe -s 1920x1080 -vcodec libx264 -preset ultrafast -qp 16 ${TS}.mkv &
sleep 5;
vlc ${TS}.mkv
killall ffmpeg
echo ${TS}.mkv
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borisisok commented Sep 1, 2021 •
edited
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try the same (mjpeg cam steaming) using vlc

https://wiki.videolan.org/Documentation:Modules/v4l2/

vlc v4l2:///dev/video0:chroma=mjpg:width=1280:height=720

https://www.lewisroberts.com/2015/05/15/raspberry-pi-mjpeg-at-30fps/
v4l2-ctl -c sharpness=30,compression_quality=100,video_bitrate_mode=1,video_bitrate=25000000

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Find and select rec format via v4l2-ctl

root@mediapi:~# v4l2-ctl --list-formats-ext -d /dev/video0
ioctl: VIDIOC_ENUM_FMT
Type: Video Capture

    [0]: 'YUYV' (YUYV 4:2:2)
            Size: Discrete 640x360
                    Interval: Discrete 0.033s (30.000 fps)
                    Interval: Discrete 0.040s (25.000 fps)
                    Interval: Discrete 0.050s (20.000 fps)
                    Interval: Discrete 0.067s (15.000 fps)
                    Interval: Discrete 0.100s (10.000 fps)
                    Interval: Discrete 0.200s (5.000 fps)
            Size: Discrete 320x240
                    Interval: Discrete 0.033s (30.000 fps)
                    Interval: Discrete 0.040s (25.000 fps)
                    Interval: Discrete 0.050s (20.000 fps)
                    Interval: Discrete 0.067s (15.000 fps)
                    Interval: Discrete 0.100s (10.000 fps)
                    Interval: Discrete 0.200s (5.000 fps)
            Size: Discrete 640x480
                    Interval: Discrete 0.033s (30.000 fps)
                    Interval: Discrete 0.040s (25.000 fps)
                    Interval: Discrete 0.050s (20.000 fps)
                    Interval: Discrete 0.067s (15.000 fps)
                    Interval: Discrete 0.100s (10.000 fps)
                    Interval: Discrete 0.200s (5.000 fps)
            Size: Discrete 960x720
                    Interval: Discrete 0.067s (15.000 fps)
                    Interval: Discrete 0.100s (10.000 fps)
                    Interval: Discrete 0.200s (5.000 fps)
            Size: Discrete 1280x720
                    Interval: Discrete 0.100s (10.000 fps)
                    Interval: Discrete 0.200s (5.000 fps)
    [1]: 'MJPG' (Motion-JPEG, compressed)
            Size: Discrete 640x360
                    Interval: Discrete 0.033s (30.000 fps)
                    Interval: Discrete 0.040s (25.000 fps)
                    Interval: Discrete 0.050s (20.000 fps)
                    Interval: Discrete 0.067s (15.000 fps)
                    Interval: Discrete 0.100s (10.000 fps)
                    Interval: Discrete 0.200s (5.000 fps)
            Size: Discrete 320x240
                    Interval: Discrete 0.033s (30.000 fps)
                    Interval: Discrete 0.040s (25.000 fps)
                    Interval: Discrete 0.050s (20.000 fps)
                    Interval: Discrete 0.067s (15.000 fps)
                    Interval: Discrete 0.100s (10.000 fps)
                    Interval: Discrete 0.200s (5.000 fps)
            Size: Discrete 640x480
                    Interval: Discrete 0.033s (30.000 fps)
                    Interval: Discrete 0.040s (25.000 fps)
                    Interval: Discrete 0.050s (20.000 fps)
                    Interval: Discrete 0.067s (15.000 fps)
                    Interval: Discrete 0.100s (10.000 fps)
                    Interval: Discrete 0.200s (5.000 fps)
            Size: Discrete 960x720
                    Interval: Discrete 0.033s (30.000 fps)
                    Interval: Discrete 0.040s (25.000 fps)
                    Interval: Discrete 0.050s (20.000 fps)
                    Interval: Discrete 0.067s (15.000 fps)
                    Interval: Discrete 0.100s (10.000 fps)
                    Interval: Discrete 0.200s (5.000 fps)
            Size: Discrete 1280x720
                    Interval: Discrete 0.033s (30.000 fps)
                    Interval: Discrete 0.040s (25.000 fps)
                    Interval: Discrete 0.050s (20.000 fps)
                    Interval: Discrete 0.067s (15.000 fps)
                    Interval: Discrete 0.100s (10.000 fps)
                    Interval: Discrete 0.200s (5.000 fps)

root@mediapi:~# v4l2-ctl -d /dev/video0 --set-parm=15
Frame rate set to 15.000 fps

v4l2-ctl --set-fmt-video=width=640,height=480,pixelformat=JPEG --stream-mmap --stream-count=100 --stream-to=[email protected]

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pi@raspicam2:~ $ v4l2-ctl -D -d /dev/video0
Driver Info:
Driver name : sonixj
Card type : USB camera
Bus info : usb-20980000.usb-1.4
Driver version : 5.10.17
Capabilities : 0x85200001
Video Capture
Read/Write
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x05200001
Video Capture
Read/Write
Streaming
Extended Pix Format

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