640x480 keeping resolution

[fishman12345]

I have an avi that is 640x480 When I use TMpgenc to convert it to an MPEG it squishes it to 352x240. I want to keep the long format of the picture (i.e. the movie-screen look not the square TV screen look). Is there any way to do this or does this MPG, by definition, have to be this size?

[Baldrick]

Are you making vcd,svcd or dvd? or just mpeg that you are going to use on computers??? If just mpeg then load the unlock template(in the Extra folder) and you can use higher resolutions or create a new project.

[fishman12345]

I am making a VCD to play in a DVD player......So am I out of luck???

But as for your other post...what "extra" folder? I don't see that anywhere

[Conquest10]

vcd HAS to be 352x240/288. so you're out of luck. you can try xvcd or svcd with 480x480. that will get you closer to the source.

[mujahid7ia]

for a VCD, the resolution MUST be 352x240 (NTSC) , but is the 'squishing' that it does even perceptable??

i haad 640x480 AVI, converted it to VCD-compliant 352x240 MPEG and on my DVD player it looked nice ans sharp.

What do you mean by "I want to keep the long format of the picture (i.e. the movie-screen look not the square TV screen look)."?

640x480 is not widescreen, it is standard TV look... even if its widescreen inside a 640x480 box, it would still look fine.

Are u sure u meant 640x480?? some popular WS resolutions are 640x272 and 608x240 etc etc

[Roderz]

640 x 480 is 4:3 aspect ratio
352 x 240 is 4:3 aspect ratio

There shouldn't be any 'squishe" if you select 4:3 aspect ratio in tmpg!

[Conquest10]

352 x 240 is 4:3 aspect ratio

not exactly. its more like 4.4:3. 320x240 is 4:3 but not a valid resolution.

[FOO]

I think some of us may have missed something here.
The storage resolution is unrelated to the display
resolution. For example - 720 x 480 looks exactly the same as
352 x 480 when displayed on the TV.
The Display Aspect Ratio is set in the MPEG headers and controls
what it looks like .

.

[Conquest10]

I think some of us may have missed something here.
The storage resolution is unrelated to the display
resolution. For example - 720 x 480 looks exactly the same as
352 x 480 when displayed on the TV.
The Display Aspect Ratio is set in the MPEG headers and controls
what it looks like.

exactly. same as 480x480. looks wrong but the aspect is set to 4:3 so it looks good on a tv.

[ZippyP.]

I think some of us may have missed something here.
The storage resolution is unrelated to the display
resolution. For example - 720 x 480 looks exactly the same as
352 x 480 when displayed on the TV.
The Display Aspect Ratio is set in the MPEG headers and controls
what it looks like.

exactly. same as 480x480. looks wrong but the aspect is set to 4:3 so it looks good on a tv.

Exactly. Be sure to select Full Screen (keep aspect ratio) in video arrange method in order to display it properly.

[Roderz]

The file is an AVI 640*480 and (only) has 1 ratio, a Video Aspect Ratio of 1.33 (same as DAR)

Converting it to mpeg1 352x240 has a Video Aspect Ratio 1.46 but has a Display Aspect Ratio of 1.33 (the only DAR allowed at this size for vcd/dvd)

correct - SVCD 480*480 has a DAR of 1.33 so gets shown as 640*480

[Vejita-sama]

No the file is an AVI so it has a DAR of 1:1, it's resolution is 640x480. A lot of peope confuse resolution with DAR. But they are NOT the same. You can have any DAR at any resolution.

For example:
720x480
704x480
480x480
352x480
352x240

Can all have a DAR of 4:3. Notice that the resolution has NOTHING to do with the DAR. There are 3 DARs that you're likely to deal with:

1:1 PC
4:3 standard TV
16:9 film and widescreen TV

Under the 16:9 flag there are several ratios:

1.77:1 widescreen TV
1.85:1 academy flat
2.35:1 anamorphic widescreen

All (correctly encoded) PC video has a DAR of 1:1 (a lot of d/loaded divx/xvid files are not correctly encoded). The source DVD might have had a DAR of 4:3 but once it's converted to a divx the DAR is now 1:1.

Hence in TMPGenc you should select: source aspect ratio: 1:1 (VGA)

You can have any DAR at any resolution. For the PC you can use any resolution you want, but if you want your (x)VCD/SVCD/CVD/DVD to play on your standalone you need to stick to the NTSC safe resolutions. Again you'll notice that none of these resolutions divide out to 1.33:1.

[lordsmurf]

DAR = Display Aspect Ratio, for those that may be lost.

[Roderz]

The file is an AVI 640*480

Video Aspect Ratio IS 1.33
Display Aspect Ratio IS the same as the numbers i.e. 1:1 (not altered at playback) my mistake in all the gargon

mpeg1 352x240 has a Video Aspect Ratio 1.46
but has a Display Aspect Ratio of 1.33 (IS altered at playback)

Thats what I ment to say.
complicated subject? yes!
to easy to get the terminolagy wrong.

Read this (about 3 times) to understand all......
https://www.videohelp.com/forum/viewtopic.php?t=174200

[lordsmurf]

There is only ONE aspect ratio. That is the one used at playback.

The size and formation of the pixels is just that. That is not considered an aspect ratio or a ratio of anything else, not in official terms. When video people discuss aspect ratio, be assured they are speaking of the playback.

4:3 and 16:9 are the only ones relavent concerning MPEG and tv playback.

Aspect ratio and resolution are independent of another another. Aspect is the space the picture occupies. The pixels are the number of visual data pieces that create the picture.

Many of you seem to be making this harder than it really is.

[FOO]

It's time for djrumpy to make a short comment here
(less than 3 pages )