Jesse

I've converted over to the wonderful jit.gl.hap object for all video playback (thank you Rob!) but have noticed an issue with any changes to the @rate attribute. The video stutters momentarily, making it impossible to do smooth rate ramps.

I've noticed this same stuttering behavior when a HAP movie loops.

This is on a Mac Pro, Mountain Lion, Max 6.16, latest version of HAP codecs and jit.gl.hap. The HAP files are being played back from a RAID 10 striped array, with the files limited to 10MB/sec data rate.

The stuttering happens consistently, regardless of how many HAP files are being played back at once.

I've converted over to the wonderful jit.gl.hap object for all video playback (thank you Rob!) but have noticed an issue with any changes to the @rate attribute.  The video stutters momentarily, making it impossible to do smooth rate ramps.

I've noticed this same stuttering behavior when a HAP movie loops.  

This is on a Mac Pro, Mountain Lion, Max 6.16, latest version of HAP codecs and jit.gl.hap.  The HAP files are being played back from a RAID 10 striped array, with the files limited to 10MB/sec data rate.

jit-gl-hap-stutter

unfortunately this is a problem with the quicktime player.

if you need smooth rate changes, it's probably best to set the rate to 0 and create your own timing mechanism using the frame or time message.

unfortunately this is a problem with the quicktime player.
if you need smooth rate changes, it's probably best to set the rate to 0 and create your own timing mechanism using the frame or time message.


I see - that's certainly doable, although I have not seen the issue with the jit.qt.player object.

Is this behavior also expected upon loop as I've been observing?

I see -  that's certainly doable, although I have not seen the issue with the jit.qt.player object.

Is this behavior also expected upon loop as I've been observing?


i'm guessing this is the result of using qtkit instead of raw quicktime.

i'll make an issue to look at getting rid of qtkit.

https://github.com/robtherich/jit.gl.hap/issues/13

maybe?
i'm guessing this is the result of using qtkit instead of raw quicktime.
i'll make an issue to look at getting rid of qtkit.
https://github.com/robtherich/jit.gl.hap/issues/13


Thank you Rob - your efforts on this are much appreciated.

jit.gl.hap stutter