Hi, If I use ffmpeg to produce -f ldash it takes a long time to sync, and I need to first produce an h264 output stream and then feed that back into ffmpeg to pass to the dash encoder. I have an h264 stream coming in, and I don't want to re-encode.
So I now want to use code written based on the remuxing example to take the stream in and output low latency dash. I have set up a dictionary with all the options I had from the command line for ffmpeg and all seems to be working, yet i can't play the stream (the FFmpeg stream does play). I've compared the two .mpd files and have noticed a few differences, the most significant of these being: 1) bandwidth: ffmpeg produces what appears to be a genuine number, libavformat gets told it's 6Mbps and is a static number despite the somewhat varying bitrate. 2) in the SegmentTimeline the s and d values are quite different t=unix time stamp in the libavformat case (1541276893), and seems to be an offset from 0 in the ffmpeg case (23855872), and d is 12800 in the ffmpeg case and 1080000 in the libavformat case. Can anyone help with a) getting a bitrate measure from the libav libraries? b) explaining the s and d values in the mpd file, and what significance their differences might be causing? Many thanks, Simon
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