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stream in udp multicast from local loop file

Luc 2018-11-20 20:27:11 UTC in Nimble Streamer

I'm searching a solution to stream endlessly a file in h.265 over multicast/udp in mpegts. Is this something nimble server could do? As I can see it doesn't appear to be possible

Denis Slobodskoy 2018-11-21 01:13:31 UTC

You can use Live transcoder to produce stream from a file: https://blog.wmspanel.com/2017/01/bind-unsynced-video-audio-transcoder.html . However, it will need to be decoded and re-encoded continuously, so I would not recommend this. Instead, you can use FFmpeg to send stream from file:
ffmpeg -re -stream_loop -1 -i video_hevc.mp4 -c copy -f mpegts udp://ip:port
Notice that stream_loop has some issues with MP4 files, it's recommended to convert it to .ts first:
ffmpeg -i video.mp4 -c copy -f mpegts video.ts

Luc 2018-11-21 15:25:05 UTC

Thanks for the reply. FFMPEG is what we currently use, but it doesn't output a compliance MPEGTS files. the timestamp is going backward everyloop and it make multiple pts error so the equippement that we use on the network doesn't like the mpegts/udp produced, so we are searching another solution. I saw multiple post that indicate FFMPEGhas MPEGTS packetizer broken. I was hoping to be able to try Nimble.

Denis Slobodskoy 2018-11-21 23:17:55 UTC

In this case you can push stream to Nimble over RTSP and setup Nimble to send it over UDP, as described in this article: https://blog.wmspanel.com/2015/07/advanced-mpegts-delivery-udp-nimble-streamer.html
To push RTSP stream to Nimble you can use this command:
ffmpeg -re -stream_loop -1 -i video_hevc.ts -c copy -f rtsp -rtsp_transport tcp rtsp://nimble_ip:port/live/stream1

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