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I have a number of video clips that came with the .mov extension. The video clips open fine in Apple's Quicktime 7 and Quicktime X movie player. However, when I tried to open the files with VLC, I get the following error:

No suitable decoder module: VLC does not support the audio or video format "apcs". Unfortunately there is no way for you to fix this

The VLC log says (among lots of other output):

main error: no suitable decoder module for fourcc `apcs'. VLC probably does not support this sound or video format.

For numerous reasons using only Quicktime is not a viable option for me. Is there an alternative player that can play this format?

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You should try mplayer, it's the other major multi-format player on the Linux platform.

I don't know about the acps codec, but I've yet to run across something that at least one of mplayer of vlc wouldn't play.

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The correct format full name is Apple ProRes 422 LT: 'apcs' ('scpa' in little-endian).

Link about Apple ProRes

Responding at your question, I quote:

When it was released you could not open video encoded with ProRes in video players that did not support the Apple QuickTime playback architecture since ProRes was a proprietary Apple encoding format. But in late 2011 an open source decoder became available for ffmpeg as a compile in option.

This is picked by kenjikato from the other StackExchange site that could respond at your question.

How to play Apple ProRes 422 outside of QuickTime?

Edit: VLC has ProRes 422 support since Version 2.0

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