Video format for mobile

Klaus major-k klaus at
Thu Apr 9 11:28:30 EDT 2020

Hi all,

> Am 09.04.2020 um 16:53 schrieb Bryan Anderson via use-livecode <use-livecode at>:
> The .mp4 file spec allows for 3 different audio formats. AAC, MPEG1-Layer1 and MPEG1-Layer2. AAC is by far the most often used audio codec.

yes, even my (not so smart) TV can play MP4 with AAc directly from an USB attached harddisk.

> I just made a quick video using each audio codec, and the only one that plays audio in LC is the AAC version (MacOS, LC 9.5.0). To make sure you’re video is the right format, download the sample stack in the bug report at <>. I know that video works, at least on Mac.
> On MacOS. Quicktime is the default player on the Mac still today, but it’s not the same QuickTime from years ago that LC depended on. If “About QuickTime Player” shows version 10.5, you’re on the new one. QuickTime Player 7 uses the deprecated APIs.

Well, no idea why they keep the name "QuickTime", since the current framework is the macOS AV-Framework
and no QuickTIme anymore.

However I still run Mojave, so I can use the old QT Player (PRO, I once bought a license a million years ago) and 
can use it to export audio/video to a variety of other codecs.

> Bryan Anderson
> Exnihilo Media
> <>



Klaus Major
klaus at

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