How to record UDP stream with FFMPEG in chunks?
ffmpeg, udp, video-recording
Solution
Ok found it.
Recently ffmpeg add a segmenter, here is the syntax:
`-f segment`: tell ffmpeg to use the segmenter
`-segment_time`: chunk size in second
You can use autoincrement file name with something like %03d (000,001,002,003...).
Here is my line to transcode a UDP MPEGTS stream, into H264+AAC and save it to file chunk (60 seconds):
ffmpeg -i udp://239.0.77.15:5000 -map 0:0 -map 0:1 -s 640x360 -vcodec libx264 -g 60 -vb 500000 -strict experimental -vf yadif -acodec aac -ab 96000 -ac 2 -y -f segment -segment_time 60 "xxx-%03d.ts"
Problem
I'm looking for a way to record a video UDP stream using ffmpeg but in 10mn chunks. I currently use the following to get 10mn of video (with h264 transcoding). "ffmpeg -i udp://239.0.77.15:5000 -map 0:0 -map 0:1 -s 640x360 -vcodec libx264 -g 100 -vb 500000 -r 25 -strict experimental -vf yadif -acodec aac -ab 96000 -ac 2 -t 600 -y /media/test.m4 " My problem is that using command line ffmpeg needs time to resync with the udp stream loosing 2 seconds of video each time. Is it normal ? Any idea if there is a way to do it in command line or should I tried to use the ffmpeg API ? Thanks in advance