![]() ![]() It may be damaged by malicious software infection and virus attack. ![]() Undoubtedly, VLC won't open 0 KB MP4 file. In the dock, right-click the Finder icon and choose “Go to Folder”.Launch Terminal app and enter the command: defaults delete.VLC will ask for confirmation, click the “Continue” button.įor users who are unable to open VLC, using the command line to reset an excellent way. The simple way is to go to VLC menu, open the “Preferences” window, and click “Reset All”. If you customize VLC settings incorrectly during use, it will also lead to VLC not working on Mac. Exist VLC app and open MP4 file with it again.Find the “Hardware Decoding” option, and uncheck the box.Navigate to the menu bar > Click “VLC” > “Preferences” to call up a setting window.Solution: Disable hardware video decoding option in VLC It will result in VLC won't play MP4, choppy playback, or stuck issues, as the hardware decoding can't deal with the rendering effects. #2 Too Many Rendering Effects or Subtitle Tracks in MP4 Video It will process all MP4 files at the same time. Click the “gearwheel” icon and tweak the video settings.Choose the output format like “MP4 Video”, which is encoded in H264 + AAC.Drag-n-drop MP4 files into the converting interface. ![]()
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