Unable To Initialize The Output Video Codec Virtualdub -

On Windows 10 or 11, try running VirtualDub in for Windows 7 or XP. Codec Problems with trying to edit videos with VirtualDub

If the source file is corrupted or in an unsupported format (like MKV or MP4), use tools like Handbrake or VLC Media Player to convert the file to a standard AVI format before importing it into VirtualDub. : Unable To Initialize The Output Video Codec Virtualdub

Download and install the and ensure you select the option to "Reset all settings to their defaults" during installation. On Windows 10 or 11, try running VirtualDub