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aspect ratio with exporting youtube SD

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John Aufderheideaspect ratio with exporting youtube SD
by on Feb 24, 2009 at 2:19:12 am

Hello,

I am exporting DV footage from my MBP using 10.5.5, media 100 Producer 13.0 with QT 7.5.0.

When I export to h.264 at NTSC 720 x 480 4:3 and view it, it is squished and fat. (In other words QT player is not reading it as 4:3 and playing the rectangular pixels as if they were square. It is supposed to do so with H.264 footage.) However, if I export the same footage in Final Cut, using the same QT settings, the footage plays correctly. What's going on here?

I realize that I can use the 640x480 settings and will do so, and I would like to understand how Media 100 works.

Also, to my eye, the 4:3 version (from both programs) looks slightly thinner than the footage does when playing the dv tape on a monitor. Any thoughts there?

Thank you,

John


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Wickham StrubRe: aspect ratio with exporting youtube SD
by on Feb 24, 2009 at 3:11:54 am

Hmmm...interesting.

I'll need to take a look at this tomorrow. To be clear, is this going direct out of M100 via the "Other > QuickTime" choices in the Export from Edit Suite dialog, correct?



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Wickham StrubRe: aspect ratio with exporting youtube SD
by on Feb 24, 2009 at 3:17:59 am

In the meantime, what about exporting By-Reference from M100 and then exporting THAT from QT Pro to .h264?



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John AufderheideRe: aspect ratio with exporting youtube SD
by on Feb 24, 2009 at 6:02:27 am

Yes, it is the export to: other
And I did try to ref movie through QT pro and it is fine on export. Not only does it work for 720x480 4:3; it also works on 720x486 4:3.



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Wickham StrubRe: aspect ratio with exporting youtube SD
by on Feb 24, 2009 at 11:45:41 am

OK, I suspected as much.

I'll run it by the engineer in charge of that area of the application and see what they have to say. I know that it's a tricky area because it's not really all our code. We're basically invoking QuickTime at that point and trying to hand them a "movie" to work with before we've actually even made said movie.

~Wick



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Alec Lawrieexporting 16x9 programmes
by on Apr 29, 2009 at 7:08:09 pm

I need to export some programmes as AVI files. Although the films are 16x9, they export as 4x3 (as do self-contained and by reference movies. I also need to reduce the size to 384x216. Any suggestions?
Alec


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Floh PetersRe: exporting 16x9 programmes
by on Apr 30, 2009 at 3:51:22 pm

[Alec Lawrie] "I need to export some programmes as AVI files. Although the films are 16x9, they export as 4x3 (as do self-contained and by reference movies. I also need to reduce the size to 384x216. Any suggestions?"

Actually they export in their native pixel dimensions, which is 720*576 or 720*486, which is absolutely correct. If you want to convert them to AVI files, you should use a tool like Cleaner, Compressor, Episode or whatever to convert to AVI and to scale to the needed size. For viewing in QuickTime player you simply can scale the file to a 16:9 aspect by setting the video scaled size to 1024*576 (PAL) or 864*486 (NTSC) in the Video Properties window of the QuickTime player.



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Alec LawrieRe: exporting 16x9 programmes
by on May 1, 2009 at 8:23:55 am

Thanks Floh. Clear, to the point and very helpful. Problem solved. Alec


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