Hi;
I've been playing around with Vegas Video 3 some NTSC DV clips at 720x480 resolution. I think I see an unexpected performance problems with Video Track FX.
Basically, even when the effects are set to a value where they should have no effect on the video, it still seems to have a massive effect on render times.
Please let me know if I should be doing this a different way, or if this is really a problem with VV3 performance.
I have a two hour DV clip and there are sections that I wanted to adjust brightness on, as well as reduce noise with Gauusian Blur/Sharpen. Since this footage was captured from a Hi8 camcorder, I also wanted to use a very small border filter to remove the 'ragged' effect at the bottom of the picture where the bottom most few two or three lines are garbage.
I set up four plug-ins using the Video/Track FX panel. I set up keyframes where I use the individual filters settings to effect whether correction is done or not. For example, the first 'noisy' section is about 15 minutes into the DV clip. So, the first keyframes for Brightness/Blur/Sharpen are set to the 'Neutral' defaults. Then at about 15 minutes in I added new keyframes where I 'turned on' the effects by setting values for correction. At the end of the noisy sections I turned the setting back to 'neutral'.
For 'Neutral', I set Gaussian blur to 0.000 in both H and V directions, set sharpen amount to 0.000, etc.
As a test, I picked 20 seconds from the start of the DV clip where no effects should be active (I unchecked 'border' from the Filter plug-in list to eliminate its effects). I then did a render as 'Video for Windows .AVI'/DV NTSC. This takes about 3 minutes to render on my system. If I go back to Track FX and uncheck Brightness/sharpen/ and Gaussian blur the same render takes 6 seconds.
I double checked and the Brightness/sharpen/Gaussian blur settings should all result in no net correction. Even moving the first keyframes in Track FX to a point after the end of the test section still shows these large performance hits. (With the first keyframe after the end of the test clip, I would have thought the program would know no effects are possible at that point in time.)
I would have expected sections with no correction (due to neutral settings) to render at full speed. Am I just doing this the wrong way?
My concern is that If I add a few seconds or minutes of correction to my 2 hour clip, I suddenly may take a hit for the entire length. In this case, I would seem to turn a 35 minute render into an 18 hour ordeal.
Thanks;
-Greg Bohn
I've been playing around with Vegas Video 3 some NTSC DV clips at 720x480 resolution. I think I see an unexpected performance problems with Video Track FX.
Basically, even when the effects are set to a value where they should have no effect on the video, it still seems to have a massive effect on render times.
Please let me know if I should be doing this a different way, or if this is really a problem with VV3 performance.
I have a two hour DV clip and there are sections that I wanted to adjust brightness on, as well as reduce noise with Gauusian Blur/Sharpen. Since this footage was captured from a Hi8 camcorder, I also wanted to use a very small border filter to remove the 'ragged' effect at the bottom of the picture where the bottom most few two or three lines are garbage.
I set up four plug-ins using the Video/Track FX panel. I set up keyframes where I use the individual filters settings to effect whether correction is done or not. For example, the first 'noisy' section is about 15 minutes into the DV clip. So, the first keyframes for Brightness/Blur/Sharpen are set to the 'Neutral' defaults. Then at about 15 minutes in I added new keyframes where I 'turned on' the effects by setting values for correction. At the end of the noisy sections I turned the setting back to 'neutral'.
For 'Neutral', I set Gaussian blur to 0.000 in both H and V directions, set sharpen amount to 0.000, etc.
As a test, I picked 20 seconds from the start of the DV clip where no effects should be active (I unchecked 'border' from the Filter plug-in list to eliminate its effects). I then did a render as 'Video for Windows .AVI'/DV NTSC. This takes about 3 minutes to render on my system. If I go back to Track FX and uncheck Brightness/sharpen/ and Gaussian blur the same render takes 6 seconds.
I double checked and the Brightness/sharpen/Gaussian blur settings should all result in no net correction. Even moving the first keyframes in Track FX to a point after the end of the test section still shows these large performance hits. (With the first keyframe after the end of the test clip, I would have thought the program would know no effects are possible at that point in time.)
I would have expected sections with no correction (due to neutral settings) to render at full speed. Am I just doing this the wrong way?
My concern is that If I add a few seconds or minutes of correction to my 2 hour clip, I suddenly may take a hit for the entire length. In this case, I would seem to turn a 35 minute render into an 18 hour ordeal.
Thanks;
-Greg Bohn