Brecht

Does anyone have any good strategies to reliably speed up movie playback of HD files?

Speeds between 0 and roughly 1.5/2.0 seem to work but beyond that playback freezes...

Does anyone have any good strategies to reliably speed up movie playback of HD files?
Speeds between 0 and roughly 1.5/2.0 seem to work but 

jit-movie-playback-speed-choppyfreezing-at-rate-above-~1-5

a non-temporal compression codec is key (prores422 is a good place to start). but for ultimate random access freedom, using @engine viddll and loadram functionality with a large @cache_size is the way to go. if going the loadram route codec is less important.

 prores422 and the files are too large and numerous to load into RAM...I need to crossfade between a series of movies so loading into RAM on the fly is also not an option as it halts the entire patch...

Could disk access speed be an issue? Although they are loaded from an internal SSD, so speed-wise I don't see much possibilities to improve there either.

Thanks. 
Problem is that the engine is  VIDDLL, the codec is prores422 and the files are too large and numerous to load into RAM...I need to crossfade between a series of movies so loading into RAM on the fly is also not an option as it halts the entire patch...

Could disk access speed be an issue? Although they are loaded from an internal SSD, so speed-wise I don't see much possibilities to improve there either.

loadram is asynchronous, so as long as your GPU and CPU are not too bogged down it should not affect playback:

Thanks. I'll study your patch and do some more tests - this works perfectly fine on my 2015 macbook.

I hope I can make it work as it would make the artist very happy. 

If not, I'll try and make a sample patch with some of the actual movies.

Thanks. I'll study your patch and do some more tests - this works perfectly fine on my 2015 macbook.
I hope I can make it work as it would make the artist very happy. 

If not, I'll try and make a sample patch with some of the actual movies.

jit.movie playback speed choppy/freezing at rate above ~1.5