Copy mode several OBS created MKV files loaded directly into avidemux, copy mode, no cuts trying to make them into MP4 with the MP4 Muxer + Move index to the beginning of the file.
I used to have an older Version where there was MP4v2 Muxer that did not have this error, but I am on a new system now and find it hard to find where the older versions are.
The MP4v2 (libmp4v2-based) muxer is obsolete and effectively unmaintained, the supported MP4 (libavformat-based) one is the way to go.
Quote from: samsonwilliams on May 08, 2024, 07:56:35 AMI used to have an older Version where there was MP4v2 Muxer that did not have this error
You haven't provided any info about an error you experience.
In any case, please try the latest 2.8.2 nightly build and, if the problem persists, please launch Avidemux, reproduce the error, close Avidemux (do not launch it again yet, else the log will be overwritten) and attach Avidemux log file (admlog.txt from %localappdata%\avidemux on Windows) to your reply. You may consistently anonymize paths and file names contained in the log. If the file is too large, compress it or use a service like Pastebin, WeTransfer, Mega, Dropbox or Google Drive.