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| Author | 68k video compression shootout between MJPEG (Motion-JPEG) and Cinepak Pro (Read 11640 times) | ||||||||||||||
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cballero
1024 MB  Posts: 1176 System 7, today and forever 
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on: January 30, 2022, 02:03
So I was researching Sparkle's capabilities for 68k video playback options, and I came across a forum post from 68kMLA.org that discussed some of the results members had with different 68k compression options: https://68kmla.org/bb/index.php?threads/mp4-mpeg-to-mov-converters-that-can-handle-any-color-depth.9005/ (needs modern web browser) Although seemingly preliminary, at least one user seemed to feel that MJPEG video generated better output than Cinepak Pro but required higher specs to decode, which I found to be quite interesting!  This thread lead to another thread continuing the discussion which added just a few more tidbits on this subject: https://68kmla.org/bb/index.php?threads/cinepak-vs-motion-jpeg.9073/ (needs modern web browser) Even with the initial testing mentioned in these posts, I really think working on the Cinepak's encoding settings can still produce some good output results 
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68040
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512 MB Posts: 950 68k - thy kingdom come, thy will be done !
Reply #1 on: February 01, 2022, 11:49
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If you are running this on B-II then you are cheating.  Vintage HW had the *big* problem of a speed-limited system bus, required for the data to travel between the different parts of a system (HW->CPU->GPU...). Emulators like Basilisk-II eliminate this (and a few other) bottleneck(s) and no down clocking in software can reasonably compensate for that. Therefore data I/O intensive stuff (like multimedia apps) always runs (a lot) faster on B-II emulated systems than it does on real hardware.
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cballero
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1024 MB Posts: 1176 System 7, today and forever
Reply #2 on: February 01, 2022, 18:31
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Well, if you're going to have the ultimate 68k Mac, then all's fair in love and war, n'est pas? lol If I ever get my hands on a working Quadra 840av or a souped-up, CPU upgraded IIfx, I'd love to try out their video-playback capabilities, I mean, the online example that blew me away and simply inspired me was this real cool video playback on a real 68k Macintosh IIci w/a '040 upgrade (essentially running at Quadra 700 speeds): https://www.youtube.com/watch?v=t9PyMmlUhNI&t=8s (needs modern web browser) Now I don't know which might be the neater '040 68k Powerbook to get: a Powerbook 540c that can take 36 MB RAM w/trackpad, active matrix display and external video out, tiny Powerbook Duo 280c with a micro or duo dock II w/FPU and outputs various 8 and 16-bit resolutions, but can only go up to Mac OS 7.6.1 or the Powerbook 190cs w/trackpad, up to 40MB RAM but needs video-out card upgrade for external video.
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68040
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512 MB Posts: 950 68k - thy kingdom come, thy will be done !
Reply #3 on: February 01, 2022, 20:02
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Believe it or not, even the most souped up physical Mac 68k will trail behind a modern day Basilisk-II setup. It sounds counter intuitive, but the tiniest of bottlenecks can and will slow down an entire system.
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