793a - Jerky playback

jaydear

Member
Very unpleasant editing with this version. Mouse wheel causing random search direction and jerky searching. Mouse wheel movements seem to be buffered more than usual and the interface becomes unresponsive for several seconds until VRD has finished rolling back and forth - major PITA. Search bars not smooth. Forward and backward searching with jump buttons not smooth. Playback in editing window is jerky as if the video is freezing for one frame every second. The finished edit plays OK in VLC and PotPlayer. I'm editing 25fps 1920x1080i h.264 TS files.
 

Danr

Administrator
Staff member
1. Did you try the same file in Version 5? Is navigation smoother?

2. On the Tools>Options>H.264 page, which is the size of the frame cache?

3. When you say "this version" did you mean Build 793 or V6 in general? If build 793, then go to Tools>Options>PLayback and set the deinterlacer to None and re-open the file.
 

jaydear

Member
1. Yes, 5.4.84.771. Yes

2. V5 - 32 frames. V6 - 100 frames

3. Build 793. V6 Deint was already 'none' (and it's 'off' in V5).

After checking the above settings I looked around a bit and changed video driver from GDI to VMR9. I'd selected GDI as an experiment when p/b was jerky in this version 793 (it did help a bit). Anyway, jerky playback is now unnoticeable and the Nav bar is now fast, but the fine tune bar is still jerky. The mouse wheel is still buffered more than was usual in v5 and I have to wait until it's flushed itself by 'playing back' wheel movements before I can proceed. The mouse wheel is not working well for small movements and seems a bit confused about small forward and backward searching (but it is OK in v5). Jump buttons now OK.
 

Danr

Administrator
Staff member
1. GDI should only be selected as a driver of last resort. It's primarily intended for WINE users and others where the system doesn't have support for VMR, EVR or DX11.

2. Did you try running DX11, which if supported should be the fastest driver.

3. In V6 set the # of frames to 32 to match V5 and see if that helps.
 

jaydear

Member
Changed to DX11 after checking with dxdiag that it's the installed version. Then set # of frames to 32. No visible change. The p/b is still jerky and mouse wheel still buffering, etc.
 
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