Avidemux Forum

I've seen a few odd issues disappear after remuxing the source file first with a tool like ffmpeg and then opening the new file in Avidemux. Sometimes the container metadata is the culprit rather than the video stream itself. Might be worth a quick test if you haven't tried it already.

If you set The Transform/Rotate filter to rotate the video, filter previews will display rotated.

If you click the button to the right of the Info button, below the menu bar (a green dot should appear to confirm on), main window playback will show rotation (though not when paused).

You can disable or delete the Rotate filter before exporting if desired.

Hi all,

I wanted to know if there is a way to rotate the preview video?

When capturing videos in portrait mode, avidemux shows / rotating them in landscape orientation.

Would be helpful that I can rotate the video to make it easier to watch the previews.

Of course, I understand that when exporting the video I will still need to configure the rotation separately.

Hi all,

I've recently upgraded my phone to the Samsung s25 that supports HEVC recording.

When viewing the video with VLC the colors appear to be ok as captured.

But when I import the same video into Avidemux the colors are all very saturated.

Does this happen because of the video decoder (Lavcodec RGB)? If so, how can I change that?

If not, what can I do to make the colors appear the same as captured on my phone or when viewing with VLC?

I found the problem with the "cannot open muxer" error.
I was file name parsing problem with "\", "/" in the path.
Missing output directory can also show this error.

Quote from: mozbug on May 30, 2026, 08:11:22 PMAny particular reason why the executable module is named avidemux3 in the build avidemux2 directory?

The idea was probably to allow coexistence of Avidemux 2.6.x with legacy Avidemux 2.5.x applications where the Linux executable had "avidemux2" in its name back then, more than 15 years ago as Avidemux 2.6.x was created, long before I started to contribute to the project. Avidemux 2.8.x continues the 2.6 line, 2.5 was a very different application under the hood.

I can confirm building avidemux from the updated source on both Ubuntu 2604 and Linux Mint 22.3 correctly opens and handles .ts and .m2t files. Nice work quick fix!

Any particular reason why the executable module is named avidemux3 in the build avidemux2 directory? Big changes coming needed a version upgrade?

Thanks again. This problem is closed. (and I will delete my linked files)

Quote from: mozbug on May 29, 2026, 05:44:45 PMchanging Index Files to Enable did not work for me - same error.

Correct, my first cursory assessment of the effects of that typo (and one leftover I missed back then) was incomplete.

Quote from: mozbug on May 29, 2026, 05:44:45 PMI will patiently wait for the next Nightly and will report when I test that one.

I would very much recommend not to depend on anyone to provide binaries as building Avidemux from source on Linux is very easy (on Ubuntu 26.04, just please install qt6-base-private-dev package manually, it had been added to build requirements recently, but not yet to the convenience script createDebFromSourceUbuntu.bash).

Thank you for your report.

Yes, the files are on a system with write access, but changing Index Files to Enable did not work for me - same error. I will patiently wait for the next Nightly and will report when I test that one. Thank you for your help!

Typo of doom fixed, please build from source off the latest git master or wait for a future nightly, my apologies for the inconvenience.