Premiere Pro + AVCHD Users: BEWARE!

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If you’ve recently made the switch to Adobe Premiere Pro and are using AVCHD, here’s something that can save you a lot of frustration.

1.) Some AVCHD Cameras (in my case, for a current project, a Canon HF-G10) record in a mode called PSF, or Progressive Segmented Frame. It’s very much like Interlaced, except the fields don’t dance back and forth. Instead, they’re displayed simultaneously — but they’re still split, from what I understand. So they record a Progressive video INSIDE what is actually an Interlaced wrapper. Even if the camera says 30P or 30PF in your menu settings, you should check this out:
http://en.wikipedia.org/wiki/Progressive_segmented_frame
2.) Some editing software isn’t always able to figure that out. Adobe Premiere is one of them. It might only see the Interlaced wrapper, and it will try to De-Interlace the Progressive Footage (!), making it look Aliased / Jagged. (Note: I used Final Cut Pro 7 for years, and never had this issue.)
3.) The solution is this… first, make sure your Sequence settings are Progressive. Then right click on every MTS / AVCHD footage file in the Project Window and Modify > Interpret Footage > Progressive. You’re forcing it to recognize it correctly.

That’s it! No more aliasing!

Special thanks to ComputerNovice25, Jim Simon, and Stephen_Spider for their help on the Adobe Forums.

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