Avidemux Forum

Hello There.

First question. Are the Devleoper going to make available to use m4a soundtrack in avidemux ? Generally m4a is a part of ACC container so I think it should work.

Second Q when I try to add new audio track then video play with only one or I switch to other. How to make two track merge. I want Original Sound e.g play first 15 sec then turn on new sound for 30 second and then turn of and switch to original. How to do this.

Third Q. Editor is able to append new video do orginal, so why I cannot add to original sountrack next. E.g I add to original video 15 second new video where is no sound but i want add to this part next sound without replacing original one.

Avidemux supports only raw audio streams as external audio track or, in special case of AAC, AAC stream in ADTS envelope. The existing MP4 demuxer plugin cannot be used for that.

Regarding other questions, Avidemux doesn't try to become a poor audio editor, there are quite a few good ones. It is easy to add audio track first, then append.

but m4a is container of acc. Why dont you make world better and just make avavilable this option by using ffmpeg.

Quote from: Drakon66 on April 01, 2024, 08:33:31 PMbut m4a is container of acc.

Not necessarily. m4a as filename extension is just a human-readable hint that this particular MP4 container lacks a video track. The audio track(s) may use any compatible codec.

Quote from: Drakon66 on April 01, 2024, 08:33:31 PMWhy dont you make world better and just make avavilable this option by using ffmpeg.

1) You are and any other user is free to use any tool she or he deems best.
2) Avidemux doesn't use ffmpeg (the command-line tool), it uses some of the libraries which are developed by the FFmpeg project. In particular, it doesn't use libavformat for demuxing (and these parts of libavformat are not compiled into the library). Avidemux own demuxer plugins including the MP4 demuxer do not support files without video track.

There are much more urgent and rewarding tasks like adding support for chapters and for subtitle tracks than saving a very minor inconvenience to use ffmpeg to extract an AAC audio track from an MP4 container.

Quote from: eumagga0x2a on February 23, 2024, 06:43:07 PMIt is easy to add audio track first, then append

Ok but in avimedux is possible to append ? And append you mean merge or just add second one ?
When I add new track audio a have two diffrent track or I can replace it.

I attached screen with bar to add track,
screen with option to delay track
screen with player with track to choose.

Quote from: Drakon66 on April 29, 2024, 03:57:42 PMOk but in avimedux is possible to append ?

Only as an internal audio track of a video. The video is appended, thus the audio track in that video becomes a continuation of the existing one (if the properties of the audio track like codec and codec settings, sampling frequency and number of channels match).

Quote from: Drakon66 on April 29, 2024, 03:57:42 PMAnd append you mean merge or just add second one ?

"Append" always means to continue after the end of the existing something. "Merge" is a more general term, "make one out of several", describes the final result of the processing.

Quote from: Drakon66 on April 29, 2024, 03:57:42 PMWhen I add new track audio a have two diffrent track or I can replace it.

You have both options. Adding an external audio track (telling Avidemux to use an external audio file as an audio track) at position two, as far as the audio file is accepted by Avidemux, either adds a second audio track additionally to the first internal one or replaces the second internal one. To replace the first audio track, you need to select an external audio file at position one.

In any case, you cannot mix (like an overdub) an external audio into an existing audio track with Avidemux. This is a job for a proper audio editor.