Video Format Which Doesn't Tax G4 — #5

Post #5 by Bunsen

Source Forum	68kMLA
Category	PowerPC
Post Date	Tue, 29 May 2012 - 09:46
Original URL	https://68kmla.org/bb/threads/video-format-which-doesnt-tax-g4.25518/

Post

Both .mov and .avi are container files. To some extent, playback performance depends on what is inside them.

An AVI file may carry audio/visual data inside the chunks in virtually any compression scheme, including Full Frame (Uncompressed), Intel Real Time (Indeo), Cinepak, Motion JPEG, Editable MPEG, VDOWave, ClearVideo / RealVideo, QPEG, and MPEG-4 Video.

http://en.wikipedia.org/wiki/Comparison_of_container_formats

most of the ATI rage etc ones had MPEG2

Which is one of the two standard codec for DVDs and .vob files, along with MPEG1

I'm not sure, otoh, which other codecs can be automagically shifted off the CPU onto the GPU for decompression, and what the OS and software requirements are for that. It appears your GPU is not one of those supported by CoreImage. So it may be that DVD/vob/MPEG2/MPEG1 files are the only ones which will run entirely on the GPU.