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project settings for 1080i 25fps footage
Hi
I have footage that was shot at 1080i and 25 fps.
When opening a new project in Avid though, I only have the option to choose between 1080i/50 or 1080p/25, which means that either the frame rate or the scan type don’t fit the footage.
After asking a couple of people I decided to open it as a 1080i/50 project and imported all the media. But I still have my doubts about it. Did I make the right choice? I already started editing, so should I maybe batch import the footage with different format settings? Are there maybe additional settings hidden somewhere that I can control in order to make the project type compatible with my footage? What DNXHD setting should I use (does this matter)?
Yesterday I exported a little sequence and needless to say I had the interlace-stripes in the exported clip. I don’t know if this would naturally happen because the footage was shot interlaced or could I have avoided the stripes by choosing different settings?
A lot of questions, but I am a little confused about this entire thing, so I hope someone here can give me a little guidance.
Thanks! -
3 Replies
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you di correctly – 1080p 25fps is Avid 1080i/50 – progressive frames interlaced is doubled, so 25fps progressive = 1080″p” = 1080p/25. 25fps interlaced = 1080″i” = 1080i/50
Ricky
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The number after the “i” or “p” indicates how many IMAGES per second there are. So…
1080p25 means 1920×1080…progressive…25fps.
1080i50 means 1920×1080…interlaced…25fps (since interlacing is two fields per frame, thus that number after the “i” is doubled).
Shane
Little Frog Post
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OK. thanks Ricky and Shane, that is good to know. What does that mean for my further workflow. Let’s say I want to export a sequence from the project and upload it to YouTube. Will I have to deinterlace every time or is there a way to change the export settings so Avid exports the sequence as a progressive file?
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