Debian – Save the stream to mp4 files

debianffmpegrtspstreamingvideo

How can I keep the flow (protocol rtsp, codec h264) in file (container mp4)? That is, on input an endless stream (with CCTV camera), and the output files in mp4 format size of 5-10 minutes of recording time.

OS: debian, ubuntu
Software: vlc, ffmpeg (avconv)

Currently this scheme is used:

cvlc rtsp://admin:admin@10.1.1.1:554/ch1-s1 --sout=file/ts:stream.ts
ffmpeg -i stream.ts -vcodec copy -f mp4 stream.mp4

But it can not record video continuously (between restarts vlc is a loss of about 10 seconds of live video)

Best Answer

VLC does not support segmenting the output file. You can try to use directly ffmpeg as it supports output segmentation:

ffmpeg -i rtsp://admin:admin@10.1.1.1:554/ch1-s1 -c copy -map 0 -f segment -segment_time 600 -segment_format mp4 "out%03d.mp4"

Related Solutions

Linux – keepalive type and frequency in ffmpeg

And... I think I found it. Fun being able to do this as a full-time job. I'm running some tests now, but I'm definately over the one minute threshhold I was working with earlier (by a lot - I'm up to an hour 45 minutes as I type this):

In libavformat/rtpdec.c, function ff_rtp_check_and_send_back_rr, there's a line that says "rtcp_bytes /= 50;" - that number seems to control how often it sends the receiver report. Lowering it makes it happen more often.

NGINX Serving Large mp4 Files extremely inefficiently

The better start can be the set of following rules:

disable logging and accept_mutex
enable sendfile
set sendfile_max_chunk

Configuration:

events {
    accept_mutex off;
}

access_log off;
sendfile on;
sendfile_max_chunk 512k;

New Nginx (1.7.11 or newer) feature thread pool can be really helpful in your case:

location / {
    root /home;
    aio threads;
    mp4;
}

On test samples it dramatically helps you to increase bandwidth from 1Gbps up to 9Gbps. Nine times! You have only 1Gbps but it makes it all utilised.

See more details: https://www.nginx.com/blog/thread-pools-boost-performance-9x/

Best Answer

Related Solutions

Linux – keepalive type and frequency in ffmpeg

NGINX Serving Large mp4 Files extremely inefficiently

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