1
vote
1answer
174 views

pasting audio from one video file to another with a known time offset

I have two video files that also have audio tracks. I would like to copy the audio track of one file to the other with a 5000msec time offset. The only problem is that the video files does not have ...
3
votes
2answers
1k views

Add silence to the end of an MP3

Do any of you know of a way of adding silence of a fixed duration to the end of an MP3, in Linux? For example using MEncoder, FFmpeg, etc? It needs to be command line as it will be scripted and ...
3
votes
2answers
314 views

`mencoder` captures 10 minutes of audio in less than 10 minutes. How come?

I'm using mencoder to capture audio from a Encore ENLTV-FM3 video capture device. I have recently noticed that, since one week ago, when the machine was forcibly restarted due to a power outage, all ...
1
vote
2answers
5k views

Out of sync audio video using mencoder

I converted an mkv (matroska) file to avi using ffmpeg: ffmpeg -i input.mkv -f mp4 -vcodec mpeg4 -sameq -r 29.97 -b 512kb -acodec ac3 -ab 128kb -vol 512 output.avi The output file plays fine using ...
5
votes
3answers
6k views

Add an audio track to an existing MPEG movie (using MEncoder?)

I have an existing MPG (MPEG-1) video file. The video has no sound. I have an audio track (currently in MP3 format, but I could record it in AC3 or some other required format if that's what it will ...