FFMPEG: How to keep UDP stream connection open even source drop some minute

Question

i decode UDP stream (that genrate from DVB signal) using ffmpeg to HLS with this code :

ffmpeg -i udp://239.1.2.1:60001?fifo_size=50000000 -acodec copy -vcodec copy -hls_time 2 -hls_wrap 5 -f hls /var/www/html/ts/1.m3u8

Sometime DVB signal drop for some second or minute and that lead to ffmpeg stop encoding and show error :

udp://239.1.2.1:60001: Connection timed out

When i play udp in VLC player and input stream drop for some second VLC wait stop play and when stream start again play again.

Now i want to know is there exist a way that ffmpeg either found that stream stop and dont show timeout error...it mean that FFMPEG keep connection open and wait for receive stream every time start from source. Thanks

do you know what happened for output stream until timeout time? — , Mar 01 '16 at 19:00
as ffmpeg doc timeout use for RTSP input , you mean that it use for UDP too? https://ffmpeg.org/ffmpeg-protocols.html#rtsp — , Mar 01 '16 at 19:03
UDP has it too: https://ffmpeg.org/ffmpeg-protocols.html#udp — Gyan, Mar 01 '16 at 19:14

score 5 · Accepted Answer · answered Mar 02 '16 at 09:19

5

For UDP streams you can set timeout like:

ffmpeg -timeout 2000 -i udp://239.1.2.1:60001?fifo_size=50000000

For RTP steams you can set timeout like:

ffmpeg -timeout 2000 -i rtp://192.168.0.12:1234

For RTSP streams you can specify timeouts in the SDP file

answered Mar 02 '16 at 09:19

Samer Tufail

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fifo_size dont need in RTP? – Mar 02 '16 at 19:27
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if you need some buffering add fifo_size else don't. – Samer Tufail Mar 03 '16 at 09:14
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For RTP I get the error `Option timeout not found.` (`ffmpeg version 4.4`) – drake7 Aug 27 '21 at 09:16
Isn't the `timeout` in microseconds. So this would equal to only 2 milliseconds? – Archmede May 15 '22 at 23:56

FFMPEG: How to keep UDP stream connection open even source drop some minute

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