by Thanasis Siozos
This tutorial can be equally applied to VS 9.x
Generally speaking, digital cameras and modern cell phones are 昼hooting� video in odd frame rates like 8fps, 12fps, 15fps etc. Newest digicams can shoot at 30fps and the video looks considerably smoother but not everyone is that lucky.
The good thing with these clips is that they are progressive and do not have any interlacing artifacts unlike videos shot with a camcorder. The bad thing is that due to the low fps and fast shutter speed there is virtually no motion blur and so the movement looks jerky and objects seem to jump here and there. To make things worse, if video is shot in low light then CCD noise is all over the frame.Here's how you can smooth out this jerkyness AND reduce the low light noise, at the same time.
(Notice that frame blending is also used on compositing systems to smooth jerky video. There is also another technique used called ¾Eotion estimation� but it's costly needs pro equipment and some times introduces strange artifacts.)
Don't be fooled by the blurred second frame. The movement looks much smoother.
STEPS:
- 1. Take a deep breath
2. Create an empty project the same size with your video clip and in the Project Options set it's frame rate at your target frame rate. For NTSC set it to 30 for PAL to 25 etc. Also don't forget to set the Frame type to 絶rame-based�.
3. Now insert your digicam video on the video track
4. Insert the same video as OVERLAY but drag it to start one frame later. You will need to zoom in using the �+� sign to see the individual frames.
5. Now, select the overlay video and go to the ¾Eotion and Filter tab�. Press the 絶it to screen� button and set it's transparency to 50. Values from 40-60 are best. The higher the value the less the smoothing and 帯hosting� of the frames.
6. Now preview your project and adjust the transparency appropriately
7. Exhale (see, it wasn't that long)
I didn't try this technique with interlaced video, though, but i don't see a reason why it shouldn't work.
Email sent to author 06Nov2006 to see if the pictures can be restored - sjj1805