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Playback Buffer preference setting

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Re: Playback Buffer preference setting

Postby mortenvb » Mon Mar 20, 2017 9:48 pm

switcherdude wrote:Did you set your Trigger start point 2 frames before start of bloop or after start of bloop
When you play a clip in Qtake ,do u notice a slight pause before it starts ?

I set it 2 frames before visual bloop on playback video.
I notice a slight delay from hitting play until video starts, but have never thought about it before
...Denmark

HDx4 1.3.003\Smart Assist 4\10.11.6
HDx2 1.2.020\Smart Assist\10.10.4\Micro Videohub(6.3)
HDx2 1.2.020\KONA 3G(4K)(12.3.8)\Mac Pro(8 core)\ATI Radeon HD 5770\10.11.6\2 DVI Extender\Micro Videohub(6.3)
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Re: Playback Buffer preference setting

Postby switcherdude » Tue Mar 21, 2017 1:20 am

Thats exactly as it should be with a GPI pulse trigger. 2 frames before bloop to delay the playback 2 frames in order to compensate for the 2 frame latency of inputting the live feed.(assuming there is zero latency from the camera sensor to qtake input and assuming the playback starts instantly without lag)
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Re: Playback Buffer preference setting

Postby admin » Tue Mar 21, 2017 2:26 pm

Please try this with video-only clip (make sure it doesn't have any audio tracks) and let us know if that starts playback immediately.

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Re: Playback Buffer preference setting

Postby switcherdude » Tue Mar 21, 2017 5:09 pm

"Video only " clip has zero lag. Very interesting. I dont think there is a way to disable audio recording in Qtake as I believe it records an audio track regardless of input config.Although in 90% of my GPI trigger work ,I need to record audio.
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Re: Playback Buffer preference setting

Postby mortenvb » Wed Mar 22, 2017 8:13 am

I also see no delay when playing back with no audio.
But of course we need audio playback without play-start delay !?

(off topics: Is it audio that is causing the problems with imported video in edit, also ??)
...Denmark

HDx4 1.3.003\Smart Assist 4\10.11.6
HDx2 1.2.020\Smart Assist\10.10.4\Micro Videohub(6.3)
HDx2 1.2.020\KONA 3G(4K)(12.3.8)\Mac Pro(8 core)\ATI Radeon HD 5770\10.11.6\2 DVI Extender\Micro Videohub(6.3)
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