You can also repair an mp4 file with a VLC media player or by using a video repair app such as the Wondershare video repair app. Just download the video repair app, add video, click repair, and then preview or save your repaired mp4 file.
Can corrupted MP4 be fixed?
To help repair a corrupted MP4 video, you can try these three options: VLC Player is the best media player for most operating systems; it stands strong as an excellent example of free MP4 repair software. Video Repair from Grau GmbH for Windows, though it does include a paywall.