Why does ATI's software say this setting is DVD quality?

[David9799]

I have a ATI TV Wonder VE on XP using all the updated drivers etc. from there site. When i want to record a music video from cable TV and pick the quality i want it to record at when i pick DVD quality it says it will record in MPEG-1 352 x 240 8.00 M / bit a sec Audio 48.000 Khz, 16 bit, stereo.

That's not true DVD format?

[Bob W]

I think that's one half DVD and is a compliant DVD format.

[ZippyP.]

That's not true DVD format?

Yes, it is. Check here and scroll down to technical info: https://www.videohelp.com/dvd

[David9799]

ok but that Video File Comparison chart says DVD format is MPEG-2 720x480 only thing there that is MPEG1 is VCD?

[ZippyP.]

I think that's one half DVD and is a compliant DVD format.

1/2 DVD is 352x480.

[rob1]

I always get confused by DVD standards. I know 720x480 mpeg-2 and 352x480 (1/2 D) mpeg-2 are DVD compliant and should play in any set top (1/2 maybe only with 4:3 aspect ratio).

What you have isn't really VCD due to the bitrate and I personally wouldn't bet the farm on how compatible it will be on a variety of set tops. But I've seen folks say it's compliant with specs... Like I say, I get confused! Curious how well that one works for folks?

[ZippyP.]

Valid DVD formats:

720 x 480 pixels MPEG2
704 x 480 pixels MPEG2
352 x 480 pixels MPEG2 (Same as the CVD Standard)
352 x 240 pixels MPEG1 (Same as the VCD Standard)

[rob1]

Forgive one more really stupid question- but if it's compliant, that means it should play in all set tops- correct? So even if my set top doesn't play vcds- which it doesn't- if I used 352 x 240 MPEG1 with a bitrate of 1.856 and authored just as I do my 1/2D, it should play in any set top that my 1/2 D DVDs do. Is this correct?

(I know the quality will suffer and I'm effectively deinterlacing, but I just want to be sure compliant really means they would as compatible as a 720x480 mpeg2 would be.)

[David9799]

Valid DVD formats:

720 x 480 pixels MPEG2
704 x 480 pixels MPEG2
352 x 480 pixels MPEG2 (Same as the CVD Standard)
352 x 240 pixels MPEG1 (Same as the VCD Standard)

I'm confused if all the above is valid DVD formats are all the above DVD quality?

[BJ_M]

DVD quality and valid dvd resolutions are two different things ..

DVD quality is subjective -- there is no set difinition of quality on a dvd (some can be the real s*)

i think the term , as used by ati, is more a marketing description .. the format though is a valid resolution as others pointed out ..


there are other critera on what is either considered standard (required) dvd encoding/layout parameters or what is considered a defacto stand becuase its always done that way ...

standalone players to be called dvd players are supposed to be able to ALWAYS play every valid resolution and bitrate (on comercial disks) , but there are always exceptions ..

[rob1]

standalone players to be called dvd players are supposed to be able to ALWAYS play every valid resolution and bitrate (on comercial disks) , but there are always exceptions.

Thanks- this was what I was wondering about.