Fixed in Vuo version:
- OS X 10.9
How severely does this bug affect you?:
Steps causing the bug to occur:
- Use decode movie image to playback 30p video file in Image Generator Protocol
- Render out movie to file from export menu making sure to select 30p and no motion blur (we want same frames in and out-for example resizing movie files etc)
- Resultant movie is not smooth, jitters, putting:
floor(time * 30)/30
between image generator time & frame number of
decode movie does not help jittered frames
Have you found a workaround?:
YUP, VUO 1.2.0 does not have this bug. (But that isn't a workaround in Vuo 1.2.2)
I think this may be because currently
decode movie image uses frame time to serve the closest frame, and if the
time value does not spit out a number close enough to the framerate of the video it misses a frame.
Would there be a way for the value of
image generator to be quantised to a framerate? Or in Render Movie settings to change that framerate quantisation?
Here is a test with frame number and timecode before exporting from Vuo: https://youtu.be/HmN3tjFV6pA
Here is the output of
decode movie image rendering the above file, set to 30p: https://youtu.be/1sDg74HH_FE
Here is the same output test, this time setting motion blur to 180º and 8 times temporal oversampling: https://youtu.be/D7DRE1TohLo
Here is the same output test, this time setting motion blur to 180º and 64 times temporal oversampling: https://www.youtube.com/watch?v=pwamalLh-nM
Also note that all Vuo processed videos loose the first frame (frame 0) as well as many other dropped frames.
UPDATE: Vuo 1.2.0 does NOT exhibit this behaviour, all frames a there. (apart from frame 0, which is also a bug): https://youtu.be/OrlCW-zt2mk