Show pageOld revisionsBacklinksExport to PDFBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ===== Stream desktop over Icecast ===== If you need to stream to many computers at once, Icecast is pretty useful. FFMPEG can directly stream to an Icecast server (alternatively, you can use similar settings in OBS). I capture the x11 window, then encode using VAAPI for reduced CPU usage. <code> ffmpeg -vaapi_device /dev/dri/renderD128 -video_size 1920x1080 -framerate 30 -f x11grab -i :0.0+0,0 -vf 'hwupload,scale_vaapi=w=1920:h=1080:format=nv12' -c:v h264_vaapi -f mpegts -content_type 'video/mp2t' "icecast://source:password@example.com:8000/name.ts" </code> * The coordinates after the -i is width, height, left offset, top offset. * The video filters are to scale to 1080p, while maintaining the vaapi encoder. * I use mpegts to stream the video, though other file formats that allow streaming such as matroska also work. If you're streaming theora/vorbis, use ogg, for audio, use opus if you're encoding opus, so on. * I set the content type to video/mp2t, which makes the video stream properly detect. It also makes the m3u file download rather then play in the browser. scripts/ffmpeg/stream_desktop_over_icecast.txt Last modified: 2022-04-13 15:14by Tony