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Bad waviness/flickering in slideshow
Below is the sample. One of five or six stills that zoom and pan during the slideshow, in most of them I have corrected any flickering & jumpiness by reducing the interlace flickering, force resampling and a slight gaussian blur (0.001 vertical only). I’ve also used a bit of motion blur in the more difficult ones.
But this one seems impossible to correct!
Any ideas would be greatly appreciated.https://www.youtube.com/v/tOsTI1uo7T8
Dounble click on the video to see Sony Vegas rendering settings.
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6 Replies
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When I double-click the image, all it did for me was make the YouTube video go full-screen 🙁
You didn’t say how large the original image was but my guess is that it’s quite large (in pixels).
If this was for a standard def video, reduce the size to no more than twice your project size.
That is, if your project is NTSC DV, shrink it down to 1220 x 960 pixels.
You don’t zoom in more than 100% so this is a perfectly acceptable size.edit: I forgot to mention that Reduce Interlace Flicker is essentially a Gaussian blur so if you did this and a Gaussian blur, you blurred it twice.
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Sorry for that, if you double-click on the video thumbnail it will take you to the original YouTube page and play the video in its current size. The full screen thing is weird, never happened to me before.
The image is a 1280×851 pixel PNG, so it’s about double the video size. Could the 851 instead of 960 be affecting?
Inspite of the double blurring I still have flickering and the image is not too blurry. Could the original still be too sharp?
Thanks for the response,
Diego -
Usually folks have issues with images from digital cameras that are over 3,000 x 2,000 in size but yours is fine.
Can you post the image (full size please) to a site like Photobucket so that we can download it and see how it behaves on our system? -
Of course! Try here: https://www.hotlinkfiles.com/files/2541520_h0lm4/NimesArena.png
Thank you. -
Diego, I grabbed the image, recreated your zoom, rendered it out in DV-AVI, mp4 (640×480), MPEG-2 & WMV (3 MB.) formats and then played them back full screen on my 24″ computer monitor.
Only the MPEG showed some artifacting and it still wasn’t as bad as your YouTube version.
This didn’t surprise me though as YouTube quality leaves a lot to be desired.
What’s the ultimate destination for this slideshow?
If it’s a DVD, then I wouldn’t worry about it. -
I agree with you, Mike, the video looks much better when played directly on my PC’s monitor.
Yes, It’ll go to a DVD, although I was planning to publish it to a friend’s blog through YouTube. What I will do is make two versions, removing all the pan&crop from the one for the web.
Thank you very much for the great support,Diego
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