: Software often gets "stuck" on old file data. Go to Preferences > Media Cache and delete all files.
: A quick "hack" is to change the file extension from .mp4 to .mpg . This forces the software to use a different internal importer. 3. Transcoding: The "Nuclear Option" g60329.mp4
If the file is corrupt or uses an unsupported codec (like HEVC/H.265 on older systems), you should it. This converts the "filling" of the file into something more compatible. Can't import MP4 files. - Adobe Community : Software often gets "stuck" on old file data
: If your default player fails, use VLC Media Player which includes its own codecs to play almost any video format. 2. Fixing Import and Playback Errors This forces the software to use a different
: Right-click the file and select Open with > Windows Media Player or Movies & TV .
If you are trying to use this file in professional software like or After Effects and it shows a "Generic Error" or "Unsupported Format," try these steps: