Avidemux Forum

here it is
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Are you on Windows? If yes and the problem persists with the latest available 2.8.2 nightly build from https://avidemux.org/nightly/vsWin64/ then please close Avidemux, open it, reproduce the failure to export the complete selection, close Avidemux again and attach admlog.txt from %localappdata%\avidemux\ to your reply (ZIP-compress it if necessary). You may consistently replace paths in this log file with placeholders.

Please keep in mind that every time you launch Avidemux, the log file admlog.txt from the previous session gets overwritten.

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I tried to edit and save the video, but it failed.

- The saved video is incomplete. Error -22 ("invalid argument") -

I used all the default settings, but maybe there's a problem in the video.

What settings do I use to save it to fix the problem?

please start it from a terminal, and post the error message.

I'm on Arch Linux with these packages installed from the extra repo:

2 extra/avidemux-cli 2.8.1-8 (5.4 MiB 18.7 MiB) (Installed)
    Graphical tool to edit video (filter/re-encode/split)
1 extra/avidemux-qt 2.8.1-8 (2.3 MiB 12.4 MiB) (Installed)
    Graphical tool to edit video (filter/re-encode/split) - Qt GUI

When I start Avidemux the window briefly appears and then disappears 0.1 second later and the program exits. I used to be OK because I used it before, but presumably with a newer version something is going wrong?

Old post but no definitive solution added,

For those having similar issues. If the video does not save with a thumbnail and duration, you might need to make sure that you have set both the A starting point and the B ending point. This fixed it for me.

Video -> Copy
Audio -> Copy
Output -> MP4 Muxer --> Configure -> Force aspect ratio --> DAR: 4:3

Otherwise, you can do similar with ffmpeg.

That is lossless (so no need to re-encode).

How a player interprets that may vary, but try it & see if it works for you.

(And any decent player should have rather simple method of interactively changing aspect ratio for any "out of wack" video.)

Rana,
Yes re-encoding is the cleanest solution that works for every playback.

There is a way to adjust the Aspect Ratio for 3rd party players like VLC, but it does not work for Browser or TV app playback.  The math is a little crazy to figure out, because the settings can only be whole numbers.  So for any aspect ratio change you have to go high enough with numbers to no longer need decimal values.

Online Calculator is here: https://www.producerelease.com/blu-ray/parcalc.htm#wrapprcalc

This adjustment works only for VLC or similar 3rd party app players.

I have a small workflow suggestion: I think by default not only the current selection should be exported. It happened multiple times that when i trimmed my recordings i failed to recognize i still had a selection in the timeline, then after deleting the original file i lost some content. When extracting gaming moments in small clips for example, i don't want to double check every time because it's not important enough, but still an annoying loss.

So i think there should be a setting for it, or a separate option/hotkey for "save selection", and "save" having the standard behavior to export the entire timeline.

thanks for the good work.

If you re-encode, use Filters/Transform/swsResize. Untick "Lock Aspect Ratio".
Set either width to 568  OR  height to 640. The former will reduce the size, the later will enlarge it.