28.09.2026, 11:37
Hello! When I check the iTunes compatibility option (which changes the file extension from MP4 to M4V), the resulting video after conversion is corrupted and cannot be opened at all. If I uncheck the option (so the video remains in MP4 format), everything works normally without any problems.
I created two videos: one corrupted M4V file and one working MP4 file. Then I loaded the corrupted M4V file back into the same program and told it to convert it from M4V to MP4, and it did not produce any errors. The video plays normally.
So the file is not actually corrupted from the beginning; there is simply something wrong with it. In the Windows file properties, the M4V file doesn't even have basic information such as the video duration, bitrate, etc., whereas the MP4 file has all of this information correctly listed.
Please, somebody, help me!
I created two videos: one corrupted M4V file and one working MP4 file. Then I loaded the corrupted M4V file back into the same program and told it to convert it from M4V to MP4, and it did not produce any errors. The video plays normally.
So the file is not actually corrupted from the beginning; there is simply something wrong with it. In the Windows file properties, the M4V file doesn't even have basic information such as the video duration, bitrate, etc., whereas the MP4 file has all of this information correctly listed.
Please, somebody, help me!

