This content has been marked as final. Show 20 replies
Does your camera shoot true 16:9? Or is it just matted 4:3?
I'm not sure. I think its 720x480. It is a Panasonic PV-GS320.
I do see that it says:
Image Sensor (Effective)
4:3 -- 630K x 3
16:9 -- 540K x 3
...so it looks like maybe it is matted 4:3, which is kinda disappointing. So any suggestions for getting the video un-squished?
A bitmap file (BMP) cannot draw anything except square pixels (1.0), so changing your pixel aspect ratio (PAR) to either 0.9 or 1.2 will have no effect. That's the reason the image looks squished--all the BMP file size is a 720x480 image with square pixels.
If you're looking to simply export still frames, change the PAR setting to Square Pixels, and then use a frame size of either 854x480 or 640x360. With a 1.0 PAR, those frame dimensions will give you a 16:9 aspect ratio still frame.
However, if you're exporting to a DV file, keep the frame size at 720x480 and set your PAR to 1.2. This will result in the file being properly interpreted when reimported or played back (usually).
"However, if you're exporting to a DV file, keep the frame size at 720x480 and set your PAR to 1.2. This will result in the file being properly interpreted when reimported or played back (usually). "
Unfortunately, this results in video having the exact same characteristic as the still frame exported in the screenshot above.
Import your 16:9 project into a 4:3 project. You should get letterboxed video in the Program Monitor. Export as 4:3 video. It will playback as letterboxed video (with that 16:9 look) on a 4:3 TV, and as both windowboxed and letterboxed video on a real 16:9 TV.
At least this is theory - I've never shot matted 4:3 video before.
Are you playing it back in Windows Media Player, or bringing it back into PPro? Because I've found that WMP tends not to properly read PAR flags, so a widescreen file will often look squeezed like what you're seeing. However, if you bring it back into a widescreen PPro project, it should be properly interpreted. If not, you can always right-click and select Interpret Footage and change the PAR manually there.
I'm exporting as h.264, and playing it in quicktime.
I think he's shooting 720x480 (0.9) video that's been matted in-camera to a 16:9 frame. So all he's getting out of the camera is a 4:3 frame with letterboxing. But I could be wrong.
I can show you a sample video (quicktime). This demonstrates how it is being squeezed...
If the GS320 is anything like the GS500, or a Canon GL1, or even the Panasonic DVX100, it has 4:3 CCDs and not 16:9 CCDs. When shooting in 16:9 mode, the camera simply uses a horizontal center slice of the CCD, and then scales that image vertically to record in the standard DV 720x480 frame size. Obviously, this is a slightly lower quality image than would be derived from a camera with an actual widescreen sensor, but the results can usually be decent.
If you're going to a web format (ie. FLV, WMV, H.264, QT), you'll always want to export with square pixels, and then set the frame size manually (as I mentioned above). Non-square pixel aspect ratios are typically an anomaly of recording formats, like DV, HDV, and DVCPROHD. Some formats will recognize non-square PARs, but in general, you want to conform to square pixels for computer/web playback.
"If you're going to a web format (ie. FLV, WMV, H.264, QT), you'll always want to export with square pixels, and then set the frame size manually"
So are you just saying that I should try setting the export resolution manually to 720 x 480 and setting the PAR to 1.0, or "square pixels" ?
Yes, set the PAR to 1.0 (square pixels), but if you want widescreen, your frame size should be set to either 854x480 (which will result in some horizontal stretching) or 640x360 (probably the cleaner export). Both of those are 16:9 aspect ratios; simply multiply the height dimension by 16/9 (or 1.77777777) to get your width dimension.
Oh wow. I had no idea you had to finagle Premiere to get the correct aspect ratio out of it.
Great, I'll try this over lunch today and post the results. Thanks for the help Colin.
You're welcome. And this really isn't a Premiere issue--it's pretty much the way all these codecs were designed. After awhile, you don't even think about it; it'll just be automatic.
I'm assuming you know this, but if you're trying to export for the web, you'll find you have more control if you use the Adobe Media Encoder instead of the "Export Movie" command. If you're already doing this, I'll shut up now :)
No, I'm new to this stuff, and I did not know that. I'll look into "Adobe Media Encoder" today over lunch. Also, you're right, in that After Effects also gave me the same grief. I appreciate the advice.
I amm having a simular problem to Adam.
When I try to export my project to a AVI file (720x480)with PAL the project is grainy and squeeved in. If I export as a 720x576 file then the picture is also squeezed in.
Only when exporting in a NTCE film does the film stay in widesreen yet the quality is not good.
Using sqaure pixels (as mentioned above) just makes the quality worse. Any way around this?
(a bit of a beginner at all this - thanks!)
Without studying the basics on video editing, this program is out of your league. Start studying manuals, help file, tutorials and books on the subject.
PremiereProPedia ( RSS feed)
- Over 300 frequently answered questions
- Over 250 free tutorials
- Maintained by editors like you
Thanks Eddie will have a look.
Harm: I know the basics, studied it in college. Certainly not out of my league - but thanks anyway.