QuickTime Pro does not play sound

Hello

I bought Quicktime Pro. It works fine on my old MacPro (Lion!). However, on my new MacBook Pro (El Capitan), particularly with the films converted to QT, I can see the picture but no sound. A pop up opens by saying that some codecs are missing, but it does not say that one in particular.. !

Any ideas on what's going on?

I bought Quicktime Pro. It works fine on my old MacPro (Lion!). However, on my new MacBook Pro (El Capitan), particularly with the films converted to QT, I can see the picture but no sound. A pop up opens by saying that some codecs are missing, but it does not say that one in particular.. !

Any ideas on what's going on?

Cannot provide solutions of specicific without additional information concerning the codecs involved. However...

  1. Based on modal messages, you are referring to, it seems that files containing audio tracks encoded by codecs that are not read or are not conversion compatible with the media player you use under El Capitan.
  2. Modal messages are triggered by a trap of the "general" error and expects the user to determine which codecs are not compatible and then take the appropriate action that may be necessary or possible.
  3. If the files use QT 7 Pro under Leo, open files on the system and check windows 'Inspector' or 'Properties' to determine which audio codecs have problems. Alternatively, you can try to open the files in VLC on either brand new or old systems and, if they open, play in this application or its 'Media information' window to determine the audio codecs, creating problems.
  4. As a generic solution, if the files open and play in VLC, then use any application of conversion based on the package of the project transform FFmpeg AV open tool (for example, the free Handbrake utility) and re - export source files in MP4 h.264/AAC or H.264/AAC/AC3 M4V files that are compatible with all the current features of Mac OS/IOS under the two X QT and QT 7 structure incorporates.

Tags: Mac OS & System Software

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