Avidemux question

[r3bol]

Hi, I found a work around to a problem i was having in Avidemux using an external audio source, but I have a question. First here is the solution (I went with part 2 as the solution)...External audio source
When doing cutting or deleting, if the video has an external audio source, Avidemux will not cut sections of the external audio to synchronize or match the video timing.

There are two options for getting your external audio source to sync properly with Avidemux when you are cutting/deleting video frames:

1. You can edit the audio file yourself. Basically this means cutting the audio file yourself in an audio editing program.

2. A good work around for the external audio source problem is to edit the video two times using Avidemux.
* First, use Avidemux to add the external audio source and then save your video
* Second, now the external audio source is internal audio source in the video you saved. Open the saved video in Avidemux and it will now automatically sync the audio with the video when you do edits.
So I was wondering, will saving the file twice loose me any quality if my settings are video=copy, audio=copy and format=MPEG PS(A+V) both times?

Thanks.

[LoRd_MuldeR]

If you set "Audio" to "Copy" in Avidemux, then it will copy the audio samples 1:1 from the source, may that be the video file itself or an "external" audio source.