Strobing / Flickering problems on Finilized DVD

Devil
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Post by Devil »

The most significant thing I see is that your audio bit rate is too high for Later II sound. I suggest you try (no guarantee) to set it up for a maximum of 128 kbit/s or, if you have the possibility of AC-3 stereo, at 192 kbit/s, which will make a more compact file. I don't know what the Dazzle format is: I suggest you consult the manual to find what settings the makers recommend. If it is possible to capture an AVI file from it in its native format and then encode to MPEG, this will probably be better.
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sjj1805
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Post by sjj1805 »

Just a quickie, I have looked at the website you have linked to and amongst the FAQ on that site I found the following. Although it relates to
Pinnacle Studio, I would think that Video Studio acts in the same manner
If the still images in your project (that you created with the Studio frame grabber, jitter on playback) it is typically caused if there is motion in the frame of video you grabbed for the still.

You can reduce/eliminate this jitter (flicker) by checking the option called "Reduce Flicker" in the Frame Grabber toolbox.

A frame of video is comprised of 2 fields that are interlaced. If the Reduce Flicker option is not selected, Studio grabs both fields of video. If there is lot of motion in the frame, this will cause the two fields to be different, producing flicker.

If the Reduce Flicker option is selected, Studio grabs one field and then doubles it to produce a full frame.

Because only one field is used the "Reduce Flicker" option does reduce the video resolution. Detailed information on how to use this option can be found in the Studio manual.
Have you tried selecting/deselecting the anti flicker filter.
If you have a previously captured "good" video still on your hard drive you can open it with Video Studio then right click, the properties dialog box will then tell you the field order for that clip.


Rather than spending hours re-recording and then rendering rerendering, just work with a couple of minutes of footage. Name them so you can identify which is which eg UFFCapture.MPG and LFFCapture.MPG
(be suprised how after a few hours of experimenting you forget which one is which.)

I would create a small table and work out then try all of the possible permutations using just these two short clips.
UFFcapture.mpg => UFFSavedUFFFlickeroff.mpg
UFFcapture.mpg => UFFSavedUFFFlickeron.mpg
UFFcapture.mpg => UFFSavedLFFFlickeroff.mpg
UFFcapture.mpg => UFFSavedLFFFlickeron.mpg
LFFcapture.mpg => LFFSavedUFFFlickeroff.mpg
LFFcapture.mpg => LFFSavedUFFFlickeron.mpg
LFFcapture.mpg => LFFSavedLFFFlickeroff.mpg
LFFcapture.mpg => LFFSavedLFFFlickeron.mpg

The only other reference I could find to field order on that website was
My DC10plus captures have wavy lines when I make DVD.
Answer
Pinnacle has reproduced this, and it will be fixed in a future release.

Here is a couple of work arounds for the problem.

1. Capture from the DC10plus with TV-cropping OFF, so you get the full number of lines in each frame (480 for NTSC, 576 for PAL).

2. If you are a PAL user, work around the field dominance issue by deinterlacing, swapping the field order externally (e.g. Virtual Dub) or by using the older Studio 8 version (3.0.0.2) of MjpgDecompress.ax.
If you try this could you post the results on this site for the benefit of any other users who have this problem.
azsimons

Post by azsimons »

Thanks both of you for the help. I have some experiementing to do. I will let you know the results and post the solution when I get it.

Thanks
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