G'day.
I've got a weird one happening here in version 11. I took a series of full resolution photographs with my Canon 20D. I used Photoshop to merge those photos into a panorama and then cropped it to 12,500 pixels x 720 pixels to fit into a project I was working on in Vegas. I saved the panorama as a .png file with no interlacing.
In Vegas I placed the panorama on the timeline and stretched it to 1 min 45 seconds. I then used pan and crop to pan the entire image from left to right over the duration of the clip. Essentially I'm moving a 1280 x 720 "window" across the panorama. Watching the preview without GPU processing the playback at 50p stutters periodically and drops to 42 or 43 fps, but in the main it sits at 50 fps. When I enable GPU processing the same preview starts OK but after about 20 seconds begins to slow and by the end it is crawling at around 6 fps. (I was using Best (half) as the preview setting for both.)
All other scenarios I have tested using GPU preview work flawlessly at Best (half) and most even work fine at Best (Full), except for this .png file. Certainly it is no big deal and things like ths have workarounds., but when the workaround means disabling GPU assisted preview it becomes a pain - because the program has to be closed and opened again to effect the change between CPU and GPU previewing.
I'm going to play around a bit with other still photograph formats and see what effect they have on GPU preview.
Cheers
Russ
I've got a weird one happening here in version 11. I took a series of full resolution photographs with my Canon 20D. I used Photoshop to merge those photos into a panorama and then cropped it to 12,500 pixels x 720 pixels to fit into a project I was working on in Vegas. I saved the panorama as a .png file with no interlacing.
In Vegas I placed the panorama on the timeline and stretched it to 1 min 45 seconds. I then used pan and crop to pan the entire image from left to right over the duration of the clip. Essentially I'm moving a 1280 x 720 "window" across the panorama. Watching the preview without GPU processing the playback at 50p stutters periodically and drops to 42 or 43 fps, but in the main it sits at 50 fps. When I enable GPU processing the same preview starts OK but after about 20 seconds begins to slow and by the end it is crawling at around 6 fps. (I was using Best (half) as the preview setting for both.)
All other scenarios I have tested using GPU preview work flawlessly at Best (half) and most even work fine at Best (Full), except for this .png file. Certainly it is no big deal and things like ths have workarounds., but when the workaround means disabling GPU assisted preview it becomes a pain - because the program has to be closed and opened again to effect the change between CPU and GPU previewing.
I'm going to play around a bit with other still photograph formats and see what effect they have on GPU preview.
Cheers
Russ