BeOS: The Alternate Universe's Mac OS X

Re:BeOS: The Alternate Universe's Mac OS X by cbm-vic-20 on Thursday January 09, 2020 @02:14PM (#22004422)

BeOS would also let you do that while playing them backwards; useless, but a nice demo of the multimedia capabilities of the OS.

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Re:BeOS: The Alternate Universe's Mac OS X by remcob on Thursday January 09, 2020 @07:29PM (#22007371)

This would be challenging with modern codecs using delta frames. The only way I can see it work is precomputing all frames from the preceeding keyframe. Doable, but decent effort for a fairly obscure feature.

But did video formats back then use delta frames?

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Re:BeOS: The Alternate Universe's Mac OS X by chipotle_coyote on Thursday January 09, 2020 @08:01PM (#22007575)

I never saw BeOS do that with video, but I heard it do it with MP3 files. SoundPlay was a kind of crazy bananas MP3 player -- it could basically act as a mixer, letting you not only "queue up" multiple files but play each of them simultaneously at different volume levels and even different speeds. I've still never seen anything like it outside of DJ software.

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