Ulead DVD MovieFactory 4 SE

ghealy

New member
Question for any experienced DMF4 users out there.

Mostly because I've not figured out how to use GUI for DVD Author, I've come to rely on DMF4 to covert the mpeg2 output from VRD to DVD video.

I use BeyondTV to record a TV show or VHS tape. When I record at "Best" DVD setting its produces a mpeg2 that has a 7.00 Mbps bitrate and a dimension of 720x480. If I record at "Better", it produces a mpeg2 file that has a bitrate of 5.00 Mbps and a dimension of 640x480.

When I run the higher bitrate file through DMF4, it converts the file rather quickly. But when I run the lower bitrate file, it tells me that it will take some time to 'render' the files, and takes almost twice as long as the higher bitrate file.

Is it that the higher bitrate file with its 720x480 dimensions is DVD compliant and that the 640x4870 is not, thus requiring additional processing by DMF4?

Appreciate your comments.

--Gene
 

phd

Super Moderator
DMF will reencode with non-compliant resolutions.

It can handle D1, 1/2 D1 and 1/4 CIF resolutions for authoring without reencoding.
 

ghealy

New member
DMF will reencode with non-compliant resolutions.

It can handle D1, 1/2 D1 and 1/4 CIF resolutions for authoring without reencoding.
Thanks for that info, Pat. Still new to this, so am not quite understanding everything I should. Would the 640x480 be a non-compliant resolution?

TIA.

--Gene
 

Anole

Moderator
useful DVD resolutions

It's not the bit rate, but the dimensions that are a problem.
I've tried to make DVDs out of 640x480 material (my authoring program will do it), but nothing will play it back cleanly.
Well, DVD players and TVs have a problem with it - I'm sure it'd be fine on a computer.

I think 352x480 is 1/2 D1, and full D1 is 704x480.
Either should work, though the 1/2 D1 is kinda sucky on quality.
Stand-alone DVD recorders will often use 1/2 D1 as their 4-hour speed (just say: "no").
My video format is 3/4 D1 @ 544x480, as broadcast by a satellite provider, and it makes fine DVDs.
(using 2.5 to 3.5 mb/s)

When you drop the resolution, you can decrease the bit rate without noticing any additional loss of quality.
(In other words, why waste bandwidth on a low-res picture?)
You can experiment with less than 7mb/s on your 720, or try other resolutions and data rates to get a feel for the obtainable quality.

It's quite possible that your authoring program only considers 720x480 (real DVD format) compatible.
I'll defer to Phd on that matter - he's the expert on that family of authoring programs.

edit:
Also, search the forum for comments by Phd on Ulead movie factory.
I think he's previously mentioned limitations you may run into using the "lite" versions.
 
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phd

Super Moderator
Height for PAL is 576 and NTSC is 480.

D1 width can be 720 or 704

1/2D1 can be 352 and I believe 360

1/4 CIF is 352X240 for NTSC and 352X288 for PAL.

640X480 is non-compliant for DVD and will require reencoding in DMF.

@Anole:
Usually the SE edition of DMF is crippled for AC3. Not sure about the newer versions of DMF as they have not been included free in anything I've purchased recently. The last DMF SE I have is 3. (Along with all of the full versions since 1.)

My older Panasonic and Philips DVD recorders used 1/2D1 for 4 hour mode. The new one uses Full D1 720X480 for 4 hour mode.

As an aside, I am pretty miserable with the TVGOS in the new Panasonics. It is a nightmare and although they can be "rebooted" and the settings wiped out, issues still appear. I think I've found a fix but I have to test it again when it locks up (which shouldn't be too long.)
 

ghealy

New member
Height for PAL is 576 and NTSC is 480.

D1 width can be 720 or 704

1/2D1 can be 352 and I believe 360

1/4 CIF is 352X240 for NTSC and 352X288 for PAL.

640X480 is non-compliant for DVD and will require reencoding in DMF.
Thanks to both Pat & Anole for again helping out this newbie.

Delved a little deeper into BeyondTV's settings and discovered that I can set up custom recording settings. Took the "Better" setting and changed the dimensions to 720x480 instead of the existing 640x480. Have a few recordings scheduled for tonight, so will see how they fare once I run them through VRD & DMF4.

Also changed the bitrate from 5 Mbps CBR to VBR with an average of 5 Mbps and a high of 7 Mbps. 7 Mbps CBR appears to be BTV's "Best" bitrate. Will need to check of the BTV forums to see what others recommend as IQ tweaks.

(Sheesh, re-reading the above, it might give the impression that I actually had some idea of what I speak. :) :) :) )

Again, thanks for the help.

--Gene
 
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