Here is a revised version of the Blender VSE Quick and Dirty HDR tutorial.
- -Make project settings 25fps, import HDR video of 50fps.
-Select the video strip and press N key for properties (on right side of VSE).
-Find the Strobe value and increase it to 2.00
The strip will play ONLY light or ONLY dark frames.
-Duplicate the strip and place it directly above (G key to drag and Y key to constrain to vertical)
-Make sure duplicated strip is selected and find its "Trim Duration (hard)" value, change it from 0 to 1. Now it should be all opposite frames.
-Select both strips and add a Gamma Cross effect, turn off the button "preset transition", instead set the value to 0.5.
Or change the mix value to the best balance for light or dark.
-Select the Gamma strip and add a speed effect, set its speed value to 2.00 (double speed to compensate for stobe effect)
-Select all these strips and then press ctrl G key to make a meta strip (all bundled into one strip). Then I trim the Meta strip to the prefered length.
Seems involved but is actually pretty easy and not as hard to do as the old technique.
Here is a tutorial that I made a little while ago. It relies on the excellent freeware Blender 3D. Apart from the great animation and rendering tools there is a capable video editor inside as well.
1.shoot video at 720 50p (or 60 if you like 30fps result)
2.add the strip to the timeline
3.add a speed effect strip to the shot, turn off “stretch to input length”, set “multiply speed” to 2.0
4.drag the tail handle of the shot so that it runs at half it’s duration (dur/2)
5.strip is now all dark frames
6.duplicate the camera strip shot, move it up 1 layer
7.nudge it’s first frame handle 1 frame to the right then drag shot back to line up with lower shot
8.add another speed effect with “multiply speed” set to 2.0. This will all be light frames
9.line up the 2 shots to start at the same point
10.select both strips (meta each strip with its speed effect if you like) then add a Gamma Cross effect.
11.Gamma effect strip should have “Default Fade” turned of with a value of 0.3. It’s “Blend” opacity value should be 1.0
You can vary the mix between light and dark frames by altering the the Gamma Cross “Fade” value.
To check that all this works create a waveform window from the VSE window.
Original blog at http://blendervse.wordpress.com/2011/12/28/vse-hdr-quick-and-dirty-8bit/