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Delay audio for a few seconds at the start of audio files ...
https://stackoverflow.com/questions/9643348/delay-audio-for-a-few-seconds-at-the-start-of-audio-files-using-ffmpeg
I have been trying to get lots of wav files delayed by 2 seconds at the start using ffmpeg. And so far, even though I have read the manual, I was not able to get it working. Here is my command: for %%A in (*.wav) do (ffmpeg -i "%%A" -itsoffset 00:00:02 "%%~NA"1.wav ) And nothing is being changed. Files are simply getting copied.
How to minimize the delay in a live streaming with …
https://stackoverflow.com/questions/16658873/how-to-minimize-the-delay-in-a-live-streaming-with-ffmpeg
This format flag reduces the latency introduced by buffering during initial input streams analysis. This command will reduce noticeable the delay and will not introduce audio glitches. ffplay -fflags nobuffer -rtsp_transport tcp rtsp://<host>:<port> 2. Advanced -flags low_delay and other options.
Correcting for audio/video sync issues with the ffmpeg ...
https://wjwoodrow.wordpress.com/2013/02/04/correcting-for-audiovideo-sync-issues-with-the-ffmpeg-programs-itsoffset-switch/
ffmpeg -i clip.mts -itsoffset 2.0 -i clip.mts -vcodec copy -acodec copy -map 0:0 -map 1:1 delay1.mts Applies itsoffset to file “1” (because it is placed just before the 2nd input), and the map for file 1 points to stream 1 (audio) ffmpeg -i clip.mts -itsoffset 2.0 -i clip.mts -vcodec copy -acodec copy -map 1:1 -map 0:0 delay2.mts
Fixing audio sync with ffmpeg | Alien Pastures
https://alien.slackbook.org/blog/fixing-audio-sync-with-ffmpeg/
We now have the information to write a ffmpeg commandline which takes audio and video streams from the same file and re-assembles the movie with the audio stream delayed by 0.2 seconds. The resulting synchronized movie is called “synced.avi” and the conversion takes seconds, rather than minutes:
Delays on ffmpeg with rtsp streaming - Stack Overflow
https://stackoverflow.com/questions/33284281/delays-on-ffmpeg-with-rtsp-streaming
I tried using x264 - the situation is better. But I still have 1 second difference between cameras and 2-3 seconds delay for mixed audio. What format do you recomend? And in general: is it possible at all? I need to take simultaneously audio-video streams from 2-3 ip-cameras and plus to this one mixed audio stream (also simultaneous) from all ...
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