And, if a file will not open in one of the QT players, then you usually open the Finder "Info" window to learn more about the codecs. If a file will open in the QT X or QT 7 players, then all you need to do is open the "Inspector" window to determine which audio and/or video codecs were used to create your AVI file. Even then, the file may only be playable in one or the other QT players compatible with your current OS. Then you must determine if the required codecs are, in fact, installed on your system. Thus, one of the first steps in playing AVI content is to determine what audio and video codecs were used to create the AVI file. For example, the QT X player can normally play MPEG-2/AC3 files in an MPEG, MPG, or TS container, but will refuse to play the same content if it is in a VOB fil container. ![]() In addition, the latest versions of the QT X player must be programmed to expect these codec combinations in the container used. Basically, in order to play a AVI file, your system must be configured with the same codecs used to create the original file. Unfortunately, there are dozens of audio and dozens of video codecs that can be used in the container in hundreds of different combinations. In the case of AVI, it means the data is interleaved to maintain audio/video synchronization. In most cases, the file extension tells you what kind of a file container the data is contained in. Thanks for your reply Jon, but I'm not svavy enough to answer the "container" info you are asking about, and also it was a file passed onto to me sometime ago. On the other hand, if you want to edite file content at the track level or composite various types of content, then purchasing a "Pro" key is an inexpensive way to add such editing features as long as you know how to use them. QT 7 Pro does not add any new codecs-just allows you to access conversion and editing feature, many of which are already available via MPEG Streamclip or GarageBand. Not if you are only interested in playback issues. AVI files - do you think it might be worth a shot for me to upgrade to the QT Pro version? If you wish play MKV AC3 in 5.1 surround sound on Mountain Lion, you will need to convert MKV to MP4 AC3 5.1 or MP4 AAC 5.1 by some professional tool.Ĭlick to learn how to convert MKV to MP4 AC3 5.1 or MP4 AAC 5.I read that Quicktime Pro can play 'some'. Step 3: Select “multi-channel output” in Perian preferences. It should replace the one in /Library/Audio/Plug-Ins/Components or ~/Library/Audio/Plug-Ins/Components (the Library folder in your Home folder).įor users of OS X 10.9 Mavericks: Simply press Command+Shift+G and type in /Library/Audio/Plug-Ins/Components to locate Components folder and then replace the files. Step 1: Download the ponent Step 2: Unzip A52Codec If you haven’t download Perian, you can download Perian 1.2.3 from Perian official site. But only in multi-channel (stereo), no 5.1 surround sound (6 channels) can be supported right now. By doing some tricks, the Perian can still play AC3 audio codec on Mac Mountain Lion. Then is there no way that Perian can play AC3 audio codec? How to Fix Perian AC3 Support on Mountain Lion QuickTime has got an ac-3 decoder from Apple, but other apps like VLC, Perian can’t use the AC3 codec due to copyright issue. In fact, it is not strange at all if you get to know that Dolby Digital audio AC3 is a paid audio codec. Interesting thing is if you convert the MKV, AVI to MP4 or M4V and passthrough the AC3-audio, the QuickTime 7 can play the file fine. With the release of Mountain Lion, many OS X 10.8 Lion users only to find that when they play MKV, AVI, MP4 or any video files with AC3 stereo audio, AC3 5.1 surround with Perian Player, no sound is played, only the video portion is played.
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