ffmpeg -f v4l2 -framerate 30 -video_size 1920x1080 -i /dev/video0 \ -c:v h264_omx (or h264_v4l2m2m) -b:v 4M -f flv rtmp://live.streaming.server : Replace h264_omx with the actual encoder name for S09 (may be h264_v4l2m2m or proprietary). 5. OpenH264 as Fallback (If S09 fails) If your app doesn’t detect the S09, force software encoding with OpenH264:
ffmpeg -i input.mp4 -c:v libopenh264 -b:v 2M output.mp4 GStreamer pipeline: vera s09 openh264
-c:v h264_v4l2m2m -b:v 3500k -maxrate 4000k -bufsize 8000k -preset ultrafast -g 60 ffmpeg -f v4l2 -framerate 30 -video_size 1920x1080 -i
gst-launch-1.0 videotestsrc ! videoconvert ! openh264enc ! h264parse ! mp4mux ! filesink location=test.mp4 | Feature | Vera S09 (HW) | OpenH264 (SW) | |-----------------------|---------------------|---------------------| | Latency | ~10–30 ms | 50–150 ms | | CPU usage | Very low | High (single core) | | Max resolution | 1080p60 / 4K? | Limited by CPU | | Bitrate control | CBR, VBR, QP | CBR only (main profile) | | B-frames | Yes | No (only P and I) | | OS support | Linux (mostly) | Windows/Linux/macOS | 7. Troubleshooting Common Issues | Problem | Likely fix | |----------------------------------|-----------------------------------------------------------------| | S09 not listed in /dev/video* | Check lsusb , reload driver ( modprobe uvcvideo ) | | OpenH264 encoder not found | Verify ffmpeg -encoders | grep 264 – must show libopenh264 | | “Unknown encoder h264_v4l2m2m” | Install v4l2loopback-dkms and ensure kernel >= 5.4 | | High latency with OpenH264 | Enable -tune zerolatency in FFmpeg or speed=6 in GStreamer | 8. Recommended Settings for Live Streaming S09 Hardware (best quality/low latency): videoconvert
-c:v libopenh264 -b:v 2500k -maxrate 3000k -bufsize 6000k -tune zerolatency Use Vera S09 for hardware-accelerated H.264 encoding (low CPU, low latency). Keep OpenH264 installed as a reliable software fallback when hardware fails or for decoding. Both can coexist in the same pipeline via GStreamer’s h264parse or FFmpeg’s auto-detection logic.
ffmpeg -f v4l2 -input_format h264 -i /dev/video0 -c copy output.mp4 Or encode from HDMI capture:
Absolute Linux will continue development under eXybit Technologies, built with the same approach and
structure we've used to develop RefreshOS. We're not here to reinvent what made Absolute great, we're here
to carry it forward.
Since 2007, Absolute has stood for being simple, pre-configured, and lightweight. Slackware made easy.
That core philosophy isn't changing. Absolute will always be free, open-source, built for ease of use,
and based on the Slackware foundation.
As of now, there is no set release date for the first eXybit-developed stable version of Absolute Linux. We're bringing Absolute into modern computing while keeping it minimal. The first step is to preserve what already exists, rebuild the underlying infrastructure, and create a canary version of the next major stable release.
You can still download the original versions of Absolute Linux by Paul Sherman on SourceForge.
