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https://github.com/pikvm/pikvm
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42 lines
1.2 KiB
Markdown
42 lines
1.2 KiB
Markdown
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# Working with video
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## Video recording
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!!! info
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H.264 is available on Pi 3 and Pi 4. Older boards won't handle it. Best of all this feature only works for HDMI to CSI bridge. For the USB HDMI dongle, there will be a decrease in FPS to 10-15 for 1080p. Work in progress.
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1. Perform full system update to get the latest uStreamer and install ffmpeg:
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```
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# rw
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# pacman -Syu
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# pacman -S ffmpeg
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```
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2. For USB dongle only: Add line `gpu_mem=256` to `/boot/config.txt`.
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3. Perform `reboot` command.
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4. Run `rw` after the reboot.
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6. To record a video, you need to enable the stream (open the web interface or connect via VNC). Then run something like this in the console:
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```
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# rw
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# ustreamer-dump --sink kvmd::ustreamer::h264 --output - | ffmpeg -use_wallclock_as_timestamps 1 -i pipe: -c:v copy test.mp4
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```
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7. Press `Ctrl+C` to stop recording. Your video will be in the file `test.mp4`.
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8. After finishing work, do not forget to switch the file system to read-only mode using `ro` command.
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## Take a screenshot via console on PiKVM
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!!! note
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You must have a stream running
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```
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# curl --unix-socket /run/kvmd/ustreamer.sock http://localhost/snapshot -o /tmp/screen.jpg
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```
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