720x480 DV file renders as ... letterbox? at DVinfo.net

Sam Renkin · November 7th, 2008, 09:31 PM

Good evening everyone, I'm stumped by this particular issue: I have shot and edited a series of one-minute interview clips at DV 720x480 (widescreen, native DV aspect ratio for my Sony HVR-V1U camera). When I render them as Windows Media 9 files (512kbps preset), they look fine on my computer (Vista PC w/WMV 11) but my client says the video is letterboxed .. what am I doing wrong? Thanks!

John Cline · November 7th, 2008, 11:24 PM

If you shot and rendered it wide-screen and they're watching it on a 4x3 TV, then it absolutely should appear letterboxed. This is the correct behavior.

Sam Renkin · November 8th, 2008, 07:58 PM

They're coming out as 320x240 files, which is 4:3. I believe I need to customize the render settings so that I create a 512kbps file, 16 bit/22k, sized approximately 480 x 320 but I don't know how because those dimensions are not one of the "standard" presets offered in the menu.

Any advice is surely appreciated!

John Cline · November 9th, 2008, 01:48 AM

Just change the render dimensions to a 16x9 ratio, like 512x288 or 448x252 or 384x216 using a pixel aspect ratio of 1.0.

Jeff Harper · November 9th, 2008, 04:59 AM

Actually, shouldn't he be setting pixel aspect ratio to 1.1212?

As John says, you have to manually select the dimensions. This is a really bothersome aspect of Vegas IMO.

John Cline · November 9th, 2008, 12:58 PM

No, if you are using image dimensions that are already 16x9, ie. 640x360, 512x288, 448x252, then you would use a pixel aspect ratio of 1.0. This is also true of dimensions like 1920x1080 or 1280x720.

Sam Renkin · November 9th, 2008, 05:23 PM

Thanks a million, guys - I'm on it now and will let you know how it turns out!

Sam Renkin · November 9th, 2008, 05:31 PM

Well, I've noticed something a bit strange about my project file. I imported all the clips at DV 720x480. They appear without letterboxing in the media bin. I also made JPG stills of each interview subject using the "save snapshot to file" feature in the preview window. I use these at the beginning of each clip as a slate. These snapshots are letterboxed ... not sure why ... and all video that appears in the preview window is letterboxed as well. The actual preview window size is 654x480, but the project file dimensions and preview dimensions are set at 720x480 ... weird! I've checked "simulate device aspect ratio" and "scale video to fit preview window' but the letterboxing remains.

Is the fact that there is a letterboxed JPG file in my timeline causing the letterboxing on all clips? If so, how do I save a snapshot without letterboxing?

Sorry, guys but I didn't have this issue last time I used the software! As always, I appreciate the help and advice.

John Cline · November 9th, 2008, 06:33 PM

Are you certain that you have your project properties set to "DV Widescreen"?

Sam Renkin · November 9th, 2008, 06:43 PM

File properties as follows:
NTSC DV (720x480, 29.970fps)
Width: 720
Height: 480
Pixel aspect ratio 0.9091 (NTSC DV)

Sam Renkin · November 9th, 2008, 06:47 PM

If I change the template to NTSC DV Widescreen (with a pixel aspect ratio of 1.2121), my clips appear vignetted top, bottom and sides.

Do you think this something I can correct, or do I have to start a new project with the DV Widescreen template and basically start over?

John Cline · November 9th, 2008, 06:47 PM

OK, there's your problem. Go to "File" > "Properties" and select the "NTSC DV Widescreen" template.

Sam Renkin · November 9th, 2008, 07:00 PM

I think I just answered my own question. I opened a new file using the DV widescreen template, imported my media and everything looks the way it should. Good thing I'm only 10 clips into the project!

Thanks!

Jeff Harper · November 9th, 2008, 10:56 PM

Sam, BTW the pixel aspect ratio of 1.2121 is correct, I guess I got it backwards when I said 1.1212. I still haven't seen 1.0 setting John referred to in any settings for widescreen.

John Cline · November 10th, 2008, 03:35 AM

Setting your project properties to NTSC DV Widescreen with a pixel aspect ratio of 1.2121 is correct. Make sure that "Deinterlace Method" in the project properties is set to "Interpolate" this will make a difference when you render your WMV file.

It's when you render to Windows Media Video that you want to use a pixel aspect ratio of 1.0. You do this by choosing a WMV template, like 512kbps, for example. Then hit the custom button and go to the "Video" tab. Under "Image Size" select "Custom." Then enter a size that corresponds to a 16:9 ratio, like 640x360, 512x288, 384x216 etc and make sure that the "pixel aspect ratio" is set to "1.0 (Square)."

You might want to set the frame rate to 29.97 instead of the default 30. On the "Bitrate" tab you can play with the video bitrate, the default 500k might be a little low for an image size of 640x360 or 512x288. Although, if it's just a talking head and the video is free of noise and there isn't a lot of motion, 500kbps might be fine. On the "Audio" tab, you might want to kick the bitrate up a bit, although these are interview videos and speech doesn't require as high a bitrate as music, so the default of "64kbps 44k stereo" might be fine, too.

November 7th, 2008, 09:31 PM	#1
Sam Renkin Major Player Join Date: May 2008 Location: Atlanta GA Posts: 211	720x480 DV file renders as ... letterbox? Good evening everyone, I'm stumped by this particular issue: I have shot and edited a series of one-minute interview clips at DV 720x480 (widescreen, native DV aspect ratio for my Sony HVR-V1U camera). When I render them as Windows Media 9 files (512kbps preset), they look fine on my computer (Vista PC w/WMV 11) but my client says the video is letterboxed .. what am I doing wrong? Thanks!

November 9th, 2008, 04:59 AM	#5
Jeff Harper Inner Circle Join Date: Jun 2005 Location: Cincinnati, OH Posts: 8,425	Actually, shouldn't he be setting pixel aspect ratio to 1.1212? As John says, you have to manually select the dimensions. This is a really bothersome aspect of Vegas IMO. Last edited by Jeff Harper; November 9th, 2008 at 06:33 AM.

November 7th, 2008, 11:24 PM	#2
John Cline Major Player Join Date: Oct 2002 Location: Albuquerque, New Mexico USA Posts: 333	If you shot and rendered it wide-screen and they're watching it on a 4x3 TV, then it absolutely should appear letterboxed. This is the correct behavior.

November 8th, 2008, 07:58 PM	#3
Sam Renkin Major Player Join Date: May 2008 Location: Atlanta GA Posts: 211	They're coming out as 320x240 files, which is 4:3. I believe I need to customize the render settings so that I create a 512kbps file, 16 bit/22k, sized approximately 480 x 320 but I don't know how because those dimensions are not one of the "standard" presets offered in the menu. Any advice is surely appreciated!

November 9th, 2008, 01:48 AM	#4
John Cline Major Player Join Date: Oct 2002 Location: Albuquerque, New Mexico USA Posts: 333	Just change the render dimensions to a 16x9 ratio, like 512x288 or 448x252 or 384x216 using a pixel aspect ratio of 1.0.

November 9th, 2008, 12:58 PM	#6
John Cline Major Player Join Date: Oct 2002 Location: Albuquerque, New Mexico USA Posts: 333	No, if you are using image dimensions that are already 16x9, ie. 640x360, 512x288, 448x252, then you would use a pixel aspect ratio of 1.0. This is also true of dimensions like 1920x1080 or 1280x720.

November 9th, 2008, 05:23 PM	#7
Sam Renkin Major Player Join Date: May 2008 Location: Atlanta GA Posts: 211	Thanks a million, guys - I'm on it now and will let you know how it turns out!

November 9th, 2008, 05:31 PM	#8
Sam Renkin Major Player Join Date: May 2008 Location: Atlanta GA Posts: 211	Well, I've noticed something a bit strange about my project file. I imported all the clips at DV 720x480. They appear without letterboxing in the media bin. I also made JPG stills of each interview subject using the "save snapshot to file" feature in the preview window. I use these at the beginning of each clip as a slate. These snapshots are letterboxed ... not sure why ... and all video that appears in the preview window is letterboxed as well. The actual preview window size is 654x480, but the project file dimensions and preview dimensions are set at 720x480 ... weird! I've checked "simulate device aspect ratio" and "scale video to fit preview window' but the letterboxing remains. Is the fact that there is a letterboxed JPG file in my timeline causing the letterboxing on all clips? If so, how do I save a snapshot without letterboxing? Sorry, guys but I didn't have this issue last time I used the software! As always, I appreciate the help and advice.

November 9th, 2008, 06:33 PM	#9
John Cline Major Player Join Date: Oct 2002 Location: Albuquerque, New Mexico USA Posts: 333	Are you certain that you have your project properties set to "DV Widescreen"?

November 9th, 2008, 06:43 PM	#10
Sam Renkin Major Player Join Date: May 2008 Location: Atlanta GA Posts: 211	File properties as follows: NTSC DV (720x480, 29.970fps) Width: 720 Height: 480 Pixel aspect ratio 0.9091 (NTSC DV)

November 9th, 2008, 06:47 PM	#11
Sam Renkin Major Player Join Date: May 2008 Location: Atlanta GA Posts: 211	If I change the template to NTSC DV Widescreen (with a pixel aspect ratio of 1.2121), my clips appear vignetted top, bottom and sides. Do you think this something I can correct, or do I have to start a new project with the DV Widescreen template and basically start over?

November 9th, 2008, 07:00 PM	#13
Sam Renkin Major Player Join Date: May 2008 Location: Atlanta GA Posts: 211	I think I just answered my own question. I opened a new file using the DV widescreen template, imported my media and everything looks the way it should. Good thing I'm only 10 clips into the project! Thanks!

November 9th, 2008, 10:56 PM	#14
Jeff Harper Inner Circle Join Date: Jun 2005 Location: Cincinnati, OH Posts: 8,425	Sam, BTW the pixel aspect ratio of 1.2121 is correct, I guess I got it backwards when I said 1.1212. I still haven't seen 1.0 setting John referred to in any settings for widescreen.

November 10th, 2008, 03:35 AM	#15
John Cline Major Player Join Date: Oct 2002 Location: Albuquerque, New Mexico USA Posts: 333	Setting your project properties to NTSC DV Widescreen with a pixel aspect ratio of 1.2121 is correct. Make sure that "Deinterlace Method" in the project properties is set to "Interpolate" this will make a difference when you render your WMV file. It's when you render to Windows Media Video that you want to use a pixel aspect ratio of 1.0. You do this by choosing a WMV template, like 512kbps, for example. Then hit the custom button and go to the "Video" tab. Under "Image Size" select "Custom." Then enter a size that corresponds to a 16:9 ratio, like 640x360, 512x288, 384x216 etc and make sure that the "pixel aspect ratio" is set to "1.0 (Square)." You might want to set the frame rate to 29.97 instead of the default 30. On the "Bitrate" tab you can play with the video bitrate, the default 500k might be a little low for an image size of 640x360 or 512x288. Although, if it's just a talking head and the video is free of noise and there isn't a lot of motion, 500kbps might be fine. On the "Audio" tab, you might want to kick the bitrate up a bit, although these are interview videos and speech doesn't require as high a bitrate as music, so the default of "64kbps 44k stereo" might be fine, too.