Convert 16:9 to 4:3

crash wrote on 10/17/2013, 12:36 AM

Hi folks, I need some help here please.

I produce a TV show. The broadcster wants the footage in 4:3 ( 720 x 576 ), ( mpg2 ) that's the aspect ratio they broadcast at. Weird cause most TV's are widescreen 16:9, But anyway that's their requirement.

All our Cameras shoot only 16:9. When I import the RAW footage, the MEP project is 16:9 to match the RAW fooatge. Ok so far so good, now I can edit etc... straplines, logo's Titles etc...

Now when I'm done, if I try export the Project to mpg2 4:3 it throws all the straps and logos out.

If I export in 16:9 I get letter boxed by the broadcaster.

If I import the 16:9 RAW footage into a preset 4:3 project, then my footage is cropped on left and right.

Can anyone suggest better workflow solution.

Thanks

 

 

Comments

cpc000cpc wrote on 10/17/2013, 2:45 AM

crash,

Cropping and/or letter boxing are unavoidable because, as you know, the shape of a 16:9 rectangle is not the same as a 4:3. I'd suggest going with a 4:3 project so you know exactly where your logos etc will appear. You might be able to make creative use of the 16:9 material using some some of MEP's movement effects like occasional panning across the 16.9 frame or even doing some picture in picture arrangements. Is there a standard for strapline dimensions -- what about one that fits in the letterbox area(s) above or below a 16:9 image rather than being on top of the video? Footballers below are a full 16:9 frame original:

This also shows a technique often seen on a local station -- the letter box space is filled with an enlarged and/or blurred copy of the video clip. Ups... they more usually have the blur to the sides when broadcasting 4:3 originals. Better than black?

Hope this helps; others will no doubt have more to add.

Regards,

Carl

 

crash wrote on 10/17/2013, 3:34 AM

crash,

Cropping and/or letter boxing are unavoidable because, as you know, the shape of a 16:9 rectangle is not the ...

Hope this helps; others will no doubt have more to add.

Regard

Carl

Thanks Carl, but I don't think this is an option for me for broadcasting.

One option I have looked at is to import the RAW footage, then set that file properties to 4:3, this then engages MEP to resize the project to 4:3.... off course this stretches the image. But at least I get a clean export.

The problem then might be the vertical screen stretch for graphics etc.... I tried this only a few moments ago, I 'll run some tests.

Hopefully we'll get more input on the topic.

Thanks

 

terrypin wrote on 10/17/2013, 10:58 AM

Hi,

I'm finding it difficult to envisage what you currently get and what you want to see. A couple of screenshots would help.

But unless I've grossly misunderstood, you must either crop your 16:9 input or end up with all of it crammed into a 4:3 screen with top and bottom bars, used for titles, etc.

 

Terry, East Grinstead, UK

Last changed by terrypin on 10/17/2013, 11:07 AM, changed a total of 2 times.

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johnebaker wrote on 10/17/2013, 3:55 PM

Hi

. . . . One option I have looked at is to import the RAW footage, then set that file properties to 4:3, this then engages MEP to resize the project to 4:3.... off course this stretches the image. But at least I get a clean export. . . . .

That does not fix the problem - circles now become ovals, people appear taller and thinner - everything is distorted.

Carl is correct for 4:3 output you must set the project to 4:3 before import otherwise your titling etc are all displaced on output.

When you import 16:9 this will be letterboxed, as shown below

 

You then adjust the height setting to match the height of the 4:3 output (PAL - 576px; NTSC 480 px) and then use the left position adjustment to display the section of the image required - this will crop the sides as shown below

 

When shooting video you have to take this cropping into consideration and allow for it..

John

Last changed by johnebaker on 10/17/2013, 3:55 PM, changed a total of 1 times.

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gandjcarr wrote on 10/17/2013, 4:03 PM

Hi Crash, I just googled the 16:9 to 4:3 conversion topic and came up with this

http://videoguides.avs4you.com/How-to-convert-video-with-aspect-ratio-16:9to-4-3.aspx

have no idea if it works but the video says it does.  If your client needs it in 4:3 it may be worth a try.  Another thought is to just use size and positon (size set to keep aspect ratio) and force the footage into a different size.  You will wind up with something like 4:2.25, not ideal but it will still work in the 4:3 format with a somewhat smaller frame size.

George

Scenestealer wrote on 10/17/2013, 6:19 PM

Hi

In the period of change from 4x3 sets to 16x9 ratio sets, some of the broadcasters have transmitted in 14x9  on some analogue channels, as a compromise for both types of sets. So one solution would be for you to zoom in on your 16x9 frame in a 4x3 project, using the size/position effect as the guys have suggested, to the point that there is some what less cut off the sides but some residual letterboxing top and bottom ie a 14x9 ratio. This works quite well and some of the letterboxing is hidden by the cutoff (overscanning) on most sets.

George - I couldn't get that link to work.

Ss  

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cpc000cpc wrote on 10/17/2013, 9:15 PM

http://videoguides.avs4you.com/How-to-convert-video-with-aspect-ratio-16-9-to-4-3.aspx seems OK -- needed a '-' between '9' and 'to'.

johnebaker wrote on 10/18/2013, 1:26 AM

Hi

@George - Unfortunately the link you pointed to showing the video being converted is not what is required here - the method shown prduces letterboxed 16:9 in a 4:3 AR window. (I have the full AVS software package)

 

To do a proper conversion the Crop factor slider has to be adjusted to get a full frame 4:3 (this was not done in the video) with the consequent loss of some of the sides. 

There is no way of converting 16:9 to 4:3 without either cropping, distortion or both - it is like trying to fit a square peg in a round hole - the peg must be small enough to fit in the hole (= letterboxing) or the peg must have material shaved off the corners ( = cropping).

This brings us back to point I made that when videoing you must take in to account the cropping when framing the subject.  Similarly you must also do this when taking still images, with a digital camera, for use in video.

John

Last changed by johnebaker on 10/18/2013, 1:32 AM, changed a total of 4 times.

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johnebaker wrote on 10/18/2013, 12:52 PM

Hi

. . . . We can shoot wider then size the image to fit. Will try that option first.

I'm assuming we start the project off in 4:3 setting, then export.

That is correct  depending on your shooting rig it may be possible to devise a 4:3 guide to fit the monitor.

John

Last changed by johnebaker on 10/18/2013, 12:52 PM, changed a total of 1 times.

VPX 16, Movie Studio 2025, and earlier versions 2015 and 2016, Music Maker Premium 2024.

PC - running Windows 11 23H2 Professional on Intel i7-8700K 3.2 GHz, 16GB RAM, RTX 2060 6GB 192-bit GDDR6, 1 x 1Tb Sabrent NVME SSD (OS and programs), 2 x 4TB (Data) internal HDD + 1TB internal SSD (Work disc), + 6 ext backup HDDs.

Laptop - Lenovo Legion 5i Phantom - running Windows 11 23H2 on Intel Core i7-10750H, 16GB DDR4-SDRAM, 512GB SSD, 43.9 cm screen Full HD 1920 x 1080, Intel UHD 630 iGPU and NVIDIA GeForce RTX 2060 (6GB GDDR6)

Sony FDR-AX53e Video camera, DJI Osmo Action 3 and Sony HDR-AS30V Sports cams.