I'm trying to edit a some MP4 files but having some big trouble .
For example;as you may see on the video I uploaded to youtube by this link
I have 8-10 tracks on my project.
On of the tracks ,I add "Brightness and Contrast" and after that " Colorize" effects on a video.
At first everything is ok but after1-1,5 min playback the effects are making themselves disabled and never work again unless I restart the project.
If I try to render the video,it's the same :At first 1-1.20 min is ok and playing fine with the fx I have added but after approximately 1-1.20 min all effects are disabled and mostly the glitches start and sometimes it interferes with another tracks even if Solo is on.
Also,on another example; I add "I add "Brightness and Contrast" and after that " Skin Touch Up" effects on a track.
At first it allows me to modify the effect parameters.I can see the changes of my actions on preview screen but within minutes or after 1-2 playbacks,the effects are completely gone,nothing changes on the video when I change a parameter on any fx.
If I render that,it starts ok and again after 1-1.20 min, the video starts to glitch,flicker and it goes all dark eventually.
What causes those problems?How can I use any effect on any track when I am having the same issues constantly?
Is there a solution for this?