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1080i 50 Premiere Workflow nightmare/question
Hey. I’m going to be filming a documentary in the States for broadcast in Europe (something I’ve never done) and the acquisition and delivery specs say “1080i/50 – 25 frames per second interlaced” which I’m taking to mean shoot in PAL mode 1080i/50 and output in that same format.
Easy enough. I hate interlace but what are you gonna do. So I shot a test clip on my Ex1 in that mode and then brought the native of the clip into Premiere Pro 2014 and that’s when things got interesting.
I conformed the sequence to the clip’s settings (which Premiere showed as having a 25.00 frames/second timebase), and then exported using whatever settings Premiere Pro had, which was QuickTime, HD 1080i 25, H.264. and the output was riddled with interlacing bars.
Then I tried changing the sequence settings to 1080i/50 and the timebase to 50 or the export settings to 1080i50, including the XDCAM EX 1080i50 codec, and I get the same crappy output riddled with interlace bars.
Can someone please tell me what I am doing wrong?
Thanks
-Oliver
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4 Replies
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1080i50 is interlaced. That’s what the “i” stands for…interlaced. If you want progressive, you need to use a 1080p25 project. If your footage is 1080i50, that’s 25fps…timebase of 25. Timebase of 50 will just repeat each frame twice, at 50fps.
If you want progressive, you need to use a progressive sequence. But your specs call for an interlaced delivery, so I’d stick with that.
[oliver lukacs] “I conformed the sequence to the clip’s settings (which Premiere showed as having a 25.00 frames/second timebase), and then exported using whatever settings Premiere Pro had, which was QuickTime, HD 1080i 25, H.264. and the output was riddled with interlacing bars. “
It will be…it’s interlaced. And the only way to properly view interlacing is on a TV. Computers, and QT, don’t show it properly.
Shane
Little Frog Post
Read my blog, Little Frog in High Def -
A few of my clients are web deliverable only and I too noticed that
in the interlaced export, but that can easily be fixed.If you need an h.264 without the interlace artifacts, all you have to
do in the export settings, is change the interlaced setting to progressive. -
Hi Shane thanks for answering. The thing is I’m using a Philips flatscreen TV for a monitor so it’s either that my TV is also reading it wrong or my outputs are crap. Or I have an American TV formatted for progressive signals?
Also, I’m trying to stick to Interlace for the output but that’s the problem, selecting an interlace format for outputting is making things come out looking like crap.
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If I change the export to progressive settings then I’m not delivering in the Interlace format they require, so that’s not an option.
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