letterbox question

[cyprus1392]

here i have two of the same video

one wide screen
test run on Vimeo
and one 4:3
4:3 ratio on Vimeo

the password for both is toekneeabc123

for the letterboxing i just chose my normal export settings and changed the aspect ratio to 4:3, however the artbeat film burns stayed the same.

I tried chosing different options on the timeline such as maintain aspect ratio, but cant seem to get it to work.

I don;t even know if the video is actually letterboxed now, rather than just 4:3 for television. Sorry if this makes no sense.

Basically my goal is to get widescreen letterboxing like this...

http://vimeo.com/channels/hd#6603360
maybe its just two black boxes layed over the final draft, maybe not. Hopefully there is a better way simply to export my footage with it.

(by the way i edited 60i footage and 24f footage all on the same timeline. Maybe i did something wrong but it looks like it works to my eyes ((the footage on the actual vimeo site is much less pixelated)) despite many people on here tellig me it wont work..)

any advice will help me!

thankyou

[CycleWriter]

Please post to the proper subforum, thank you.

[Eugenia Loli-Queru]

>for the letterboxing i just chose my normal export settings and changed the aspect ratio to 4:3,

Yeah, but vimeo does not take into account any pixel aspect ratios. You need to change the resolution, not the aspect ratio. So for NTSC 4:3, you export at 656x480 instead.

[Khaver]

Why 656 and not 640? 480 x (4/3) = 640.

[Eugenia Loli-Queru]

It depends how you calculate the NTSC signal. There are two ways.

[cyprus1392]

>for the letterboxing i just chose my normal export settings and changed the aspect ratio to 4:3,

Yeah, but vimeo does not take into account any pixel aspect ratios. You need to change the resolution, not the aspect ratio. So for NTSC 4:3, you export at 656x480 instead.

sorry about not posting correctly.
ok thats all good, but the film burns are on my exported large video file, not just on vimeo. Both look identical. Do you get what I mean?

[Khaver]

I know NTSC DVD's, DV, and other formats use 720x480 with a .8888 pixel width for 4:3 but I've just never heard of using 656 for the width. Just curious where that came from.

[Eugenia Loli-Queru]

http://eugenia.gnomefiles.org/images/aspect.png
720*0.9091=654.5, rounded to the closest number that divides with 16 in order to help older encoders, gives us 656.

[cyprus1392]

my last reply was on the 17th. ive been waiting for an answer to my question.

"...the film burns are on my exported large video file, not just on vimeo. Both look identical. Do you get what I mean?"

Can anyone help me with this?

thankyou

[ejolson]

I know NTSC DVD's, DV, and other formats use 720x480 with a .8888 pixel width for 4:3 but I've just never heard of using 656 for the width. Just curious where that came from.

The DVcam specifications say 720x480 DV has a sampling frequency that corresponds to a pixel aspect ratio of 10/11 which gives 656. Vegas uses 10/11 pixel aspec ratio in the DV preset. All DVD playes I've tested display 720x480 mpeg2 video using a 10/11 pixel aspect ratio.

However, every consumer camcorder I've used actually records 720x480 DV with a pixel aspect ratio of 8/9 which gives 640. The correct thing to do is to rescale 720x480 DV on such camcorders to 704x480 mpeg2 for writing to a DVD.

[CycleWriter]

my last reply was on the 17th. ive been waiting for an answer to my question.

"...the film burns are on my exported large video file, not just on vimeo. Both look identical. Do you get what I mean?"

Can anyone help me with this?

thankyou

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