The video stops while the sound plays (files on a network share)

Applies to 0.11Updated 4 Nov 20262 min read

If the picture stops while the music or sound plays on, the video file is usually read too slowly, most often from a network share. The app now says which file and offers Create Proxies.

If the picture stops after a few seconds while the music or sound plays on, the video cannot be read fast enough. This happens most often with large 4K or high-frame-rate files on a network share (a NAS or server), because the sound is small and keeps up while the picture waits.

What the app tells you

When the picture falls behind the sound, or the player waits for its files, the status line says why:

• A file on a network share without a proxy: it names the file, how fast it needs to be read, and the share. A sheet offers Create Proxies. It is shown once per project.
• Any other cause: it suggests a lower Playback Resolution or proxies.

Fix it with proxies

1. Click Create Proxies in the sheet, or choose File › Create Proxies for Large Media.
2. The app makes small copies inside the project on your Mac. The monitor plays each one as soon as it is made.
3. Export still uses the original files, so the finished video keeps its full quality.

Making proxies of large files over a share takes a few minutes per clip, once. After that, the project plays smoothly.

Other things that help

• Lower the Playback Resolution in the Program Monitor.
• Copy the footage to a fast local drive.
• Avoid heavy work on the same share while you play, such as Auto Edit from Footage looking at the clips. It looks at a clip's proxy instead of the original when there is one.