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Why can't I play AC3 audio? - Apple Community
https://discussions.apple.com/thread/251316599
I did a clean install of 10.14.6 onto the HD and an upgrade-in-place on the SSD. The Quicktime problem is isolated to the system on the SSD. Quicktime plays AC3 content just fine when booted from the HD. I attempted to use the QT app on the HD while booted from the SSD but that did not fix anything.
How to Play 5.1 Dolby Digital Audio in QuickTime Mac OS …
https://www.instructables.com/How-To-Enable-Dolby-Digital-AC3-Passthrough-In-Mac/
1: Open the movie with QuickTime Pro. 2: Open the movie properties, by holding Command and pressing J. 3: Select the audio track (Surround). 4: Click the audio settings tab. 5: You can now fix the channel layout.
ac3 audio won't play in quicktime - VideoHelp Forum
https://forum.videohelp.com/threads/262700-ac3-audio-won-t-play-in-quicktime
You need to check if your DVD's audio is really AC3, if not, then you need another tool (ffmpeg is great and better than mpeg2works for that task, believe me) and then... convert the PCM to AIFF (I use AIFF from PCM) in order to hear the sound file of your DVD on QuickTime, every time I backup a movie to my Mac I change the AC3 to MPEG audio before to mux my …
How to Play AC3 on Mac?
https://www.idealshare.net/audio-converter/how-to-play-ac3-on-mac.html
This MP4 video by default is encoded with AAC, which can play on Mac. If your AC3 is a audio file, you can select AAC, MP3, M4A, AIFF, Apple Lossless ALAC from the "General Audio" or "Lossless Audio" category. Step 3Convert AC3 on Mac. Click the "Convert" button to start and finish converting AC3 to Mac supported format.
Quicktime and ac3 audio | MacRumors Forums
https://forums.macrumors.com/threads/quicktime-and-ac3-audio.160600/
You can download and install the DivX Fusion (aka DivX 6 beta) and AC3 QuickTime codecs. As for making Windows Media Player your default player, it already is your default player for the media...
Can Reaper play the AC3 track from Quicktime movie ...
https://forum.cockos.com/archive/index.php/t-173808.html
Reaper plays perfectly AC3 audio, you can always import the video and render the item to get a wav file. If I take a movie file that has been handbrake ripped from a DVD, it typically contains an AAC Stereo track and an AC3 5.1 track. I don't see any way to select the AC3 5.1 track to play or convert in Reaper. I only get the stereo track.
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