Viewer delay can drastically diminish playback performance
Posted: Wed May 02, 2018 9:30 pmI've noticed that the setting to delay the viewer can have drastic performance implications for playback.
I have a fairly high-powered machine, but when I had set the viewer to delay 12 frames, I couldn't get more than 12 fps. I had previously set the viewer delay earlier when I had been running a somewhat CPU-intensive codec that was producing a drastic delay between the DeckLink output and the GUI viewer.
Then, for some UHD 3840x2160 Canon XF-AVC Intra clips, smooth playback was impossible. This was with 14.3 Studio on Linux. It didn't matter whether I had had "performance mode" enabled or not.
Setting the delay back to 0 made everything snappy again. Perhaps this has already been addressed in 15--but if not, it's something for the BMD team to consider.
I have a fairly high-powered machine, but when I had set the viewer to delay 12 frames, I couldn't get more than 12 fps. I had previously set the viewer delay earlier when I had been running a somewhat CPU-intensive codec that was producing a drastic delay between the DeckLink output and the GUI viewer.
Then, for some UHD 3840x2160 Canon XF-AVC Intra clips, smooth playback was impossible. This was with 14.3 Studio on Linux. It didn't matter whether I had had "performance mode" enabled or not.
Setting the delay back to 0 made everything snappy again. Perhaps this has already been addressed in 15--but if not, it's something for the BMD team to consider.