[FFmpeg-user] Problem streaming mpegts on udp
andrey.krieger.utkin at gmail.com
Mon Mar 25 08:52:15 CET 2013
2013/3/22 Maxim Kozlov <rogat1y at gmail.com>:
> Also i've tried to stream with this codding settings from VLC, and it
> streams w/o frame/packets drops.
* Check errors/warnings in output of stream
* Try saving to local file and then playing back
* Check how CPU and network (both input and output) utilization changes in time
I guess your problem is similar to the following: if input UDP socket
is not read in time, its kernal buffer overflows and some data is
discarded. I believe this situation may occur when ffmpeg has to
encode "hard" frame (of I-type) despite of encoding threading.
You can try to fix this with increasing ffmpeg internal input UDP
socket buffer: add "fifo_size" option to input URL as a GET-parameter
(udp://22.214.171.124:1234?fifo_size=100500) or as a flag before URL. Pay
attention to unusual units of this option.
VLC may have more agressive buffering default values, and for this
reason looking like working better.
More information about the ffmpeg-user