Jerky display when browsing backward

[Karen0302]

Hi,

I am a new user of Video ReDo and ntoced something which I thought I would ask about. When browsing a video backwards, a lot of the time, the display of the video iin the display window is quite jerky. Am I doing something wrong? The version I am using is 1.5.5.221.

Karen

[DanR]

Hi Karen, Please check out the latest beta #240 or #241 and see if the behavior is the same. Betas are available here: ftp://videoredo:videoredo@ftp.drdsystems.com/Betas/

[Karen0302]

Dan,

I have some more information in the jerky display when browsing backwards in a video file. It still happens on 1.6.0.243 of VideoReDo.

I did some tests and discovered some information that leads me to ask the question: Are you doing something very different when displaying a file backwards?

The reason I ask, is that when using the right arrow key to browse the file forward 1 frame at a time, the display is smooth though, as one would expect, somewhat slow. Doing consumes about 23% of my Pentium 4 2.4 GHz processor. Using the the left arrow key to btowse the same file backwards 1 frame at a time causes the display to become somewhat jerky (more so in certain portions of the file than others) and also consumes 100% of the processor.

The reason I noticed this is because I came to VideoReDo from MPEG-VCR and in that program backward browsing is quite smooth. So I am not sure if this is a problem or not.

Hope this helps.

Karen

[DanR]

Karen, Frame backwards isn't optomized, while frame foward is. However, on my primary developement system a 2.8GHz P4 with HT foward video consumes < 20% of the CPU. Frame backward consumes about 52%. I'm using RGB mode since it works better on the multiple displays this system has. In YUV mode CPU usage is much less.

Will look into optomizing this behavior in a future release.