Permanent stuttering on any configuration of HW, Izzy, Settings, Codecs
-
Hallo Izzi Community,
what i'm now describing is a problem since many older versions as well as at the actual one of Izzi.I never wrote it down here, as i thought it must be an Hardware/ Codec/ wrongly configured OS or Background Services because nobody else seams to experience this issue. But now it's urgent, as i need a smooth running clip by Thursday, and i can't find any real reason for it!The Problem is, i nearly always get some kind of stuttering. Sometimes the clip seams to stop some milliseconds in a distance of 3 or 4 seconds.Sometimes the video is stuttering like in a bad slomo and more likly as a Computer performance issu every few frames. But every stutter seems to be in clock.At the moment i'm working with a MacBook Pro 2013 with 2,7 GHz i7 CPU and 4 GB RAM.But this phenomena already appears with only one ordinary HD Video played with a projector actor and a Movieplayer actor only, H264 codec or ProRes files as well.Izzy can hold easily 50 frames but only sometimes if i freshly restarted the computer and Isadora, the Video is playing really smooth for a while, but changes back to stuttering pretty fast after loop.Footage is filmed by 1080/25p Streched to 1920x 1200 and pulled WUXGA/50MHz through a Datapath x4 splittet to 4 quarters.I Itried to optimize Izzy Settings and videocodecs as told by the Isadora "How to optimize for speed" post, but without any real chances or even changes.I do have this problem on different Computers; the same Macbooktype or older ones. Or on a 2008 Macbook Pro, even on a nearly new 2014 Mac Pro.Do you have any clou , what this might be? -
Can you give us more information?
-
Does your computer have an SSD, what version of Isadora (and do you have a 2.x license)?
-
Do you strech the movie in Izzy or is it pre-edited?
-
Did you check if your Izzy framerate settings match the movie framerate?
Best Michel
-
-
Hallo Michel,
sorry, wrote these letters very late and weary.
Yes the Macbook does have a SSD.
I use the latest official Izzy Version 2.0.5 with 2.x upgrade license.I don't do nothing to the files but playing it with standard values in the Movie Player (speed 1).
I tried different settings with the framerates. Content 25, Izzy 25; Content 25, Izzy 50; Content 50, Izzy 50.
Nearly no difference...I found a solution now. Used PhotoJPG as Codec. Now it is very fluid with any settings!
Best
Delil
