[Gui] New Behaviour change of slider

[Jan Gruuthuse]

moving the slider (mouse) does not update the video display, so not showing where you are in the video.
Only updates video image upon release (mouse button left) of slider
- tested with xvideo, opengl & vdpau

[Jan Gruuthuse]

sample video documenting slider issue.

[mean]

That's more or less the idea i'm toying with
The problem when dealing with HD/4K video is that the refresh is taking too much time
As a result, dragging the slider indeces a long delay

It's just experimental for the moment

[Jan Gruuthuse]

OK, do understand that.
However you would still need some video/frame output on avidemux desktop. Otherwise the slider would loose it's functionality: quickly visual orientating in the loaded video.

[mean]

you can use the jog for that also

[AQUAR]

It would be a pity if we don't get some kind of visual feedback on the ADM display when dragging the slider.
Can you not show a selection of intra frames whilst dragging the slider?

[mean]

I have a middle ground version incoming, it refreshes but in a slower way

[Jan Gruuthuse]

If I remember correctly: full 4K video with slider did perform as (nearly) good as with other HD (1080i) video.
The jog performed slower against slider, so I did never use it.
Can you provide a switch on/off so I can compare the behavior of both slider (versions).
Hardware: GeForce GTX 960, 2048 MB onboard, Maximum PCIe 3.0 Link Speed: 8,0 GT/s (gigatransfers per second)

[Jan Gruuthuse]

Feels choppy. Tested with full 4k video: 4K Biosphere Full - Director's Extended Cut (1 hour / 7.9 GB). Approx. 6 seconds jump.
see https://www.youtube.com/watch?v=cPUKiq8fdfI

[mean]

The think is that you are using VDPAU for decoding & display
Try loading a 4k VP9 video
you can find those on youtube for example

[Jan Gruuthuse]

Ok, will have a go at it tomorrow (download limits)

[AQUAR]

Not come across UHD video with VP9.

If anyone is interested in testing Means "play" versions with the slider bar functionality (especially on a windows machine!). 
DL this sample to try it out (its a long link!):

http://api.viglink.com/api/click?format=go&jsonp=vglnk_145352108548313&key=3fc03d377330259546ed7d0abb712b4f&libId=ijqks9k301000bfj000DA9akcm5w7&loc=http%3A%2F%2Fwww.reduser.net%2Fforum%2Fshowthread.php%3F111230-Google-VP9-4K-HD-Sample&v=1&out=http%3A%2F%2Fwww.artbyphil.com%2Ftemp%2Fphfx_4KHD_VP9TestFootage.zip&ref=http%3A%2F%2Fwww.eoshd.com%2F2014%2F05%2Fwatch-6k-red-dragon-sample-video-4k-vp9-next-generation-codec-4k-youtube-streaming%2F&title=Google%20VP9%204K%20HD%20Sample&txt=http%3A%2F%2Fwww.artbyphil.com%2Ftemp%2Fphfx_4...estFootage.zip

[Jan Gruuthuse]

AQUAR & mean please check your Personal Messages inbox

the 1:55.240 sequence does load well.
slider nor jog wheel are working on this sample, up / down arrow is not working either.
pop up window:

Code Select Expand

Error
Cannot go to next keyframe

terminal window:

Code Select Expand

[nextKeyFrame]  Current PTS :1480 ms
  [getNKFramePTS]   No next keyframe keyfr for frameTime
  [nextKeyFrame]  Cannot find next keyframe
  [HandleAction]  ************ NextKFrame **************
  [nextKeyFrame]  Current PTS :1480 ms
  [getNKFramePTS]   No next keyframe keyfr for frameTime
  [nextKeyFrame]  Cannot find next keyframe

[Jan Gruuthuse]

The think is that you are using VDPAU for decoding & display
Try loading a 4k VP9 video
you can find those on youtube for example

just tested behavior is the same with UHD webm.
Will try to explain myself more. Slider is now to crude to work with. The previous version was faster, more fluid in usage then jog or cursor. You could really drag along in the movie, eye baling the content. Stop when you where in the neighbourhood of the estimated cut and switch to up/down arrow to select the cut.

Will test with previous slider (dcf1586) now.

[Jan Gruuthuse]

Testing with recorded desktop is inconclusive: recording drops to many frames. Only test that works is visual.
- Old slider presents more frames (like with up/down arrows but faster)
- New slider jumps certain set time (+- 6 seconds)

Can't make my mind up: jog with mouse (not working that good for me)