Avidemux Forum

I've had similar issues with Avidemux before, and updating to the latest build fixed a few odd bugs. If that doesn't help, I'd also try remuxing the file first or testing with a short sample clip to narrow down whether it's the file or the settings causing the problem.

I'd also try opening the same file in a different player first to make sure the issue is actually with the file and not Avidemux. If the file plays fine elsewhere, remuxing it into a new container without re-encoding can sometimes fix odd import problems.

Quote from: eumagga0x2a on June 24, 2026, 11:04:09 PMBuild with Qt5 should work now, please pull the latest changes and retry.

I was able to compile and run, thank you. I am currently using X11 and not Wayland.

Quote from: eumagga0x2a on June 24, 2026, 11:04:09 PMQt 6.4.2 in Bookworm may be too old, in doubt please provide the actual build error (warnings about redefining definitions are unrelated).

The problem is the lrelease (qtchooser) executable which does not detect my QT6 installation even the right executable is here. I have to check my installation.

QT_SELECT=qt6 lrelease -version
lrelease: could not find a Qt installation of 'qt6'

/usr/lib/qt6/bin/lrelease -version
lrelease version 6.4.2


Great to know, thank you!

Quote from: grolandi on June 25, 2026, 02:51:22 AMDoes Avidemux use any portion of ffmpeg that contains the new pixelsmash vulnerability?

Avidemux doesn't enable MagicYUV decoder, the one containing this particular vuln, in its bundled libavcodec, therefore the answer is "No".

Does Avidemux use any portion of ffmpeg that contains the new pixelsmash vulnerability?

If so, what are the plans to patch Avidemux?

Thank you.

Build with Qt5 should work now, please pull the latest changes and retry. You may need to explicitly request xcb (XWayland) on Wayland, e.g. by passing

-platform xcb
to Avidemux executable.

Qt 6.4.2 in Bookworm may be too old, in doubt please provide the actual build error (warnings about redefining definitions are unrelated).

This is the closest topic sorry if it is the wrong one. I tried to compile with QT5 on Debian 12 and it failed. Then installed QT6 packages, including qt6-base-private-dev package, and tried to compile with QT6 and it failed again. It was working with QT5, my last successfully compiled version is 260411_20b2688a961-fflibs 7.0.2. QT6 has issues (warnings?) with QT_TR_NOOP and QT_TRANSLATE_NOOP redefining, QT5 has issue (error) with "avidemux/qt4/ADM_userInterfaces/ADM_gui/T_preview.cpp:312:34: error: 'class QApplication' has no member named 'nativeInterface'". Both compile stopped and generated no executable.

So something happened after commit 20b2688. Any idea how to solve this issue?

Is FLAC audio output support a possibility for a future release? For myself, and I believe many others, it would be a great option to have if possible. plz&thx!

@eumagga0x2a Why do the current nightly builds no longer support NVENC? This unfortunately renders them unusable for me.