Hi all,

> Am 09.04.2020 um 16:53 schrieb Bryan Anderson via use-livecode 
> <use-livecode@lists.runrev.com>:
> 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 
> https://quality.livecode.com/show_bug.cgi?id=21278 
> <https://quality.livecode.com/show_bug.cgi?id=21278>. 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
> https://exnihilo-media.com/ <https://exnihilo-media.com/>



Klaus Major

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