exports look weird

Re: exports look weird

When you export a frame from Premiere it exports at the frame size of your clip. Your sample image is 720x480 which matches a standard DV (ntsc) frame size.

In addition to the frame size there is the Pixel Aspect Ratio. For ntsc 4:3 video the ratio is 0.9 and for 16:9 it is 1.2. This information is encoded with the video and (some) players can use this to correctly scale the pixels of the video.

To see an image scaled at the correct aspect ration you must resize it. So, for your 16:9 720h 480v image, load it into a paint program and scale the with by 1.2X to get a 864h480v image. Make sure to leave the height the same. Or, scale the height by 1/1.2 instead of the width to get a 720h400v image.

Here is a crazy amount of information about conversion factors for video:

http://www.uwasa.fi/~f76998/video/conversion/#conversion_table

Cheers!
 
Re: exports look weird

Sorry to confuse you... Just load up your exported image (720x480) into a image editor (e.g. Photoshop) and resize the width to:

For 16:9 resize width to 864.
For 4:3 resize width to 648.

Make sure to leave the height alone. In Photoshop uncheck the constrain proportions option in the Image Size dialog.
 
Re: exports look weird

Also, the latest Photoshop (CS) supports non-square pixels. So you can change to the correct aspect ratio without resizing.

This is useful if you are prepping the image for use in a DVD authoring program like Encore DVD, or to a compositing program like After Effects.

However, if you just want to post the image on the Web or print it out, it's easier to just go ahead and resize it.
 
Re: exports look weird

I worded my orginal post wrong... When I export the footage.. this image is the aspect ratio that I am getting
 
Re: exports look weird

This is the expected behavior -- the image is the exact 720x480 image stored captured by the camera, stored on the tape, and edited in PPro.

The reason you see it like this after export is because the .bmp format doesn't know the pixels are "wide" pixels. It just shows them as squares, and therefore the overall picture is distorted.

Or, more accurately, your picture isn't distorted. It's *undistorted* therefore it looks weird. :D

As I said in my last post, some programs and file formats can remember the shape of the non-square pixels. Most cannot. If you are working in a context (such a posting to the Web) that only understands square pixels, then resize the image as HansK described in his post.

Hope this helps.
 
Re: exports look weird

Once again I worded my sentance like an idiot. I know I can take a frame that I export and resize it in Photoshop but the problem I am having is that my footage is distorted when I export it as, say Quicktime or WMV.
 
Re: exports look weird

thats because quicktime and wmv do not understand pixel aspect ratios (for the most part)either-- it needs to be resized accordingly
 
Re: exports look weird

rockwiler,
Sorry I misunderstood what you were trying to communicate.

I did some tests.

For QuickTime, you seem to be right. Although I set the 1.2 Pixel Aspect Ratio drop down list, the resutling file seems to play back as if with square pixels. It may be codec dependent -- in other words, some codecs may store the pixel aspect ratio and others may not -- but I didn't have the patience to try all of the codecs.

For WMV, the Pixel Aspect Ratio control is there in the Adobe Media Encoder, it's just well hidden. Select "Audiences" in the list of settings and a bunch of options appear. One of them Pixel Aspect Ratio. Set it to "NTSC DV Widescreen 1.2." (I am paraphrasing.)

The Widescreen WMV export worked OK for me in my test.
 
Re: exports look weird

yep quicktime and WM9 can do it.. its just not somthing they do on thier own. for quicktime i believe it is codec specific, and WM9 is WM9 and can do about anythig if you have a good encoding app.
 
Re: exports look weird

One thing I discovered -- if you have QuickTime pro, you can stretch the video yourself.

Got to Movie -> Get Movie Properties.
In the properties dialog, use the first drop down list to select the video track.
Use the second drop down list to select "Size"
Click the Adjust button. Some red "handles" will appear on the corners of the video in the QuickTime Player window.
Drag one of the red handles until your video is 864x480, then click the Done button.

If somebody knows of a better way, or knows of a codec (other than DV) that preserves aspect ratio, I'd like to hear it.
 
Re: exports look weird

Cool... thanks guys... I'll do some research to see if I can find a codec that preserves aspect ratio too.
 
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