EVR - DXVA and slow video

palomino3000

New member
I tested the software, but without the support EVR and DXVA when I move the cursor there is a significant delay in the video, is really slow and I lost many seconds.
I manage a full hd video recorded on eurosportHD sat channel.
 
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VRD processes files differently than a player would, especially when creating "Thumbnails".
HD files just take more horsepower to process and display.
You will never actually lose any data in the output, I suspect you are only seeing display delays.
 

Danr

Administrator
Staff member
I tested the software, but without the support EVR and DXVA when I move the cursor there is a significant delay in the video, is really slow and I lost many seconds.
I manage a full hd video recorded on eurosportHD sat channel.
You can speed up the seek, a lot, by going to Tools>Options>Navigation and setting the I Frame seek to 4 or 5 seconds. When you do this, jumps >= to this many seconds will jump directly to the nearest IFrame and will be displayed very quickly.
 

Tardis

New member
Looks like that with my setup.
Turning off the thumbnails helps but the display is a bit jerky. I expected that though since I'm only running an AMD Dual core Opteron 180 at 2.4GHZ and an ATI 3650 AGP video card. The multitude of adjustable tools still make it fairly easy to navigate and edit.

I'm watching a BDMV created after editing and it is playing perfectly on the Oppo BDP-83. I'm pleased with it.


Later, Conrad
 
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Danr

Administrator
Staff member
The display will be jerky if your system / video card isn't fast enough to keep up with the decoder and other processing that's going on. However, this only affects playback in VideoReDo, never the output.

Also, try that I-Frame seeking option I mentioned. You'll find it makes a big difference when navigating.
 

palomino3000

New member
You can speed up the seek, a lot, by going to Tools>Options>Navigation and setting the I Frame seek to 4 or 5 seconds. When you do this, jumps >= to this many seconds will jump directly to the nearest IFrame and will be displayed very quickly.
seems to work well....thanx!
 

trE

New member
I am using a quad core QX9770 and GTX 275 and when I move the smaller slider under the bigger one, there is a delay. I disabled the thumbnails and it helped but it still lags a little. I am using 13.5mb (bitrate) 1080i files. Is that the cause?
 
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Dan203

Senior Developer
Staff member
There is also a new feature in the Thumbnails that limits the number of frames actually displayed. This can help speed up TN rendering because it makes it so VRD doesn't have to do so many seeks/decodes to fill in all the frames of the full window width. If you have a slower machine it can be a way to use TNs without having to limit the size of the main VRD window.

Dan
 

palomino3000

New member
the thumbs are good but too slowwwwwwwwwwwwww!!!
can you reduce the resolution of the thumbs for more speed?
another feat req....can you reduce the past thumbs (those on the left) and add more thumbs for the future (those on the right) ?
for more speed how I can set buffer size and cache?
thanx
 

Danr

Administrator
Staff member
the thumbs are good but too slowwwwwwwwwwwwww!!!
They run quite nicely here. If you are editing HD H.264 material and using thumbnails I suggest you look into a faster processor.

Resolution is already reduced. Reducing it more won't help. You need a faster CPU.

No plans for changing the design of the thumbnail screen at this time.

If you want more speed try increasing the cache size on the Tools>Options>H.264 page. The same cache is shared between the main window and the thumbnail window. Frames are stored at full size so if you're editing 1920x1080 then each frame is approx. 3MB in size.
 
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