jm + ffmpeg   2

Video Processing at Dropbox
On-the-fly video transcoding during live streaming. They've done a great job of this!
At the beginning of the development of this feature, we entertained the idea to simply pre-transcode all the videos in Dropbox to all possible target devices. Soon enough we realized that this simple approach would be too expensive at our scale, so we decided to build a system that allows us to trigger a transcoding process only upon user request and cache the results for subsequent fetches. This on-demand approach: adapts to heterogeneous devices and network conditions, is relatively cheap (everything is relative at our scale), guarantees low latency startup time.
ffmpeg  dropbox  streaming  video  cdn  ec2  hls  http  mp4  nginx  haproxy  aws  h264 
february 2014 by jm
Top Ten One-Liners from CommandLineFu Explained
worth it for #10: 'Capture video of a linux desktop': '$ ffmpeg -f x11grab -s wxga -r 25 -i :0.0 -sameq /tmp/out.mpg'
video  capture  x11  ffmpeg  cli  bash  linux  from delicious
march 2010 by jm

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