[FFmpeg-user] audio and video out of sync

[Murat Maman]

Hi Carl,

Do you have any idea about source of the problem, i did not get any
comment from you.

Could you make any comment.


regards,


Murat


Hi Carl,

Yesterday out of sync problem again occurred and i saved file where to my
disk, i saw that there is no out of sync problem. What does it mean, what
is the source of problem, am i have internet problem, why frame drop during
the broadcasting, is it rtmp problem.

Our internet speed approximately 150 mbps.

regards,

Murat


On Fri, Jul 4, 2014 at 3:32 PM, Eugene Gekhter <egekhter at pixcel.com
<http://ffmpeg.org/mailman/listinfo/ffmpeg-user>> wrote:

>* Carl,
*>>* Can you explain why sudo ffmpeg is a bad idea?
*>>* Thx.
*>>* Sent from my iPhone
*>>* > On Jul 4, 2014, at 4:07 AM, Carl Eugen Hoyos <cehoyos at
ag.or.at <http://ffmpeg.org/mailman/listinfo/ffmpeg-user>> wrote:
*>* >
*>* >> On Thursday 03 July 2014 10:10:39 am Murat Maman wrote:
*>* >>
*>* >> sudo ffmpeg -y -f mpegts -i 'udp://@ <udp://@>
*>* >
*>* > Unrelated: I believe that everybody on this list agrees
*>* > that "sudo ffmpeg" is a very bad idea.
*>* >
*>* >> 00.00.00.00:1111?fifo_size=1000000&overrun_nonfatal=1
<http://00.00.00.00:1111?fifo_size=1000000&overrun_nonfatal=1> \
*>* >> -maxrate 2M -bufsize 2M \
*>* >> -af volume=1.1 \
*>* >> -strict experimental \
*>* >> -c:a libfaac -ar 22050 -ac 2 -b:a 64k \
*>* >> -vsync 1 -c:v libx264 -r 25 -vf yadif,scale=640:480 -aspect:v 16:9 -b:v
*>* >> 900k \
*>* >> -preset superfast -tune zerolatency -threads 8 -crf 25 \
*>* >> -map 0:0 -map 0:1 \
*>* >> -f flv 'rtmp://testt:testt@00.00.00.00:0000/live/1111
<rtmp://testt:testt@00.00.00.00:0000/live/1111>'
*>* >
*>* > (Complete, uncut console output missing.)
*>* >
*>* > Why are you using -vsync 1?
*>* > Did you try -async 1?
*>* >
*>* > Am I correct that the problem is reproducible with file output
*>* > instead of network output?
*>* >
*>* > Is the problem reproducible if you save the udp stream to a file
*>* > (including the reception problems) and transcode the file with
*>* > FFmpeg?
*>* >
*>* > Carl Eugen
*>* > _______________________________________________
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