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ffmpeg named-pipes pipe streaming rtmp

Using FFMPEG to stream continuously videos files to a RTMP server

发布于 2020-04-20 09:46:47

ffmpeg handles RTMP streaming as input or output, and it's working well.

I want to stream some videos (a dynamic playlist managed by a python script) to a RTMP server, and i'm currently doing something quite simple: streaming my videos one by one with FFMPEG to the RTMP server, however this causes a connection break every time a video end, and the stream is ready to go when the next video begins.

I would like to stream those videos without any connection breaks continuously, then the stream could be correctly viewed.

I use this command to stream my videos one by one to the server

ffmpeg -re -y -i myvideo.mp4 -vcodec libx264 -b:v 600k -r 25 -s 640x360 \
-filter:v yadif -ab 64k -ac 1 -ar 44100 -f flv \
"rtmp://mystreamingserver/app/streamName"

I looked for some workarounds over the internet for many days, and i found some people talking about using a named pipe as input in ffmpeg, I've tried it and it didn't work well since ffmpeg does not only close the RTMP stream when a new video comes but also closes itself.

Is there any way to do this ? (stream a dynamic playlist of videos with ffmpeg to RTMP server without connection breaks

Questioner
kketch
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aergistal 2016-12-10 18:07

Update (as I can't delete the accepted answer): the proper solution is to implement a custom demuxer, similar to the concat one. There's currently no other clean way. You have to get your hands dirty and code!

Below is an ugly hack. This is a very bad way to do it, just don't!

The solution uses the concat demuxer and assumes all your source media files use the same codec. The example is based on MPEG-TS but the same can be done for RTMP.

  1. Make a playlist file holding a huge list of entry points for you dynamic playlist with the following format:

    file 'item_1.ts' file 'item_2.ts' file 'item_3.ts' [...] file 'item_[ENOUGH_FOR_A_LIFETIME].ts'

    These files are just placeholders.

  2. Make a script that keeps track of you current playlist index and creates symbolic links on-the-fly for current_index + 1

    ln -s /path/to/what/to/play/next.ts item_1.ts

    ln -s /path/to/what/to/play/next.ts item_2.ts

    ln -s /path/to/what/to/play/next.ts item_3.ts

    [...]

  3. Start playing ffmpeg -f concat -i playlist.txt -c copy output -f mpegts udp://<ip>:<port>

  4. Get chased and called names by an angry system administrator

kketch 2015-09-01 21:59:24

thanks, just saw your answer. I figured it out with hinekyle comment earlier, even if I am not interested in these kind of hacks now

chovy 2016-12-10 10:08:10

Can you elaborate on what you mean by Make a script that keeps track of you current playlist index and creates symbolic links on-the-fly for current_index + 1? What purpose is this for?

chovy 2016-12-10 10:56:54

Trying to do same thing for .m3u8 24/7 stream. But the command -c copy output -f mpegts stream.m3u8 throws an error.

aergistal 2016-12-10 17:37:50

@chovy this is a very bad answer on my part which I posted more like a joke. Really, don't do it like this, it's an ugly hack. I'll delete it so nobody else gets tempted to try it.

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