Windows – no sound playing quicktime on windows 7

audioquicktimewindows 7

I just bought and downloaded a bunch of video tutorials in quicktime (.mov), but to my distress they play without sound.
Other videos on my computer play sound, even quicktime files I made myself got sound.

Just these downloaded files. I probably miss a codec, but how do I know which one?

My system is windows 7 final x64 and I use the standard on board sound card of my shuttle SP35P2 Pro Barebone.

The preview video of the tutorial I bought neither does play sound, probably for the same reason.

Best Answer

See QuickTime DirectShow Source Filter:

MediaLooks QuickTime Source is a DirectShow source filter that allows developers to playback Apple QuickTime media (.MOV, .AMR, .MP4, etc.) via the native QuickTime runtime. The filter requires QuickTime Player (7.0 or higher) to be available on the computer.

Since the native QuickTime runtime code is used for playback, there is no degradation of quality compared to the original QuickTime player.

This product is free for end users if used for personal non-commercial goals.

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