what went wrong? extreme interlacing problems

J

Jason B.

New member
Okay, so I shot a martial arts competition at 60i and 1/500th shutter speed using the Vixia G20. From my readings on the internet this seemed like the best possible way to shoot because it could be converted down to 30p for slow-motion sequences and the high shutter speed would eliminate blur.

The interlacing of images came out really, really extreme. The worst I have ever seen. Every single movement, no matter how small, reduces the people on screen to indistinct figures with zig-zag contours.

Was the shutter speed too high? Was it a mistake to shoot 60i? Is there any way to salvage this?
 
You will need to separate the fields. This will basically give you 60p, which can be converted to 30p and you will have the necessary frames to run that 30p at half speed if you want. I think Twixtor can help in rebuilding the lost information between fields. Might be some other options out there too. You may want to post in one of the software sections of the forum to get help with whatever program you are using to edit.
 
This has for many years been the standard way to obtain clean easy slow motion footage (using Avisynth and VirtualDub). In your case it will look stroby, but there shouldn't be any interlace problems. It sounds more like you have a field order or cadence problem. How are you viewing the footage? Have you tried reversing the field order?
 
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