Avoiding Re-Encoding

neumannu47

New member
Apparently Nero Vision Express always re-encodes MPEG-2 compliant files. Ulead does not, but its menu creation functions (inability to edit templates) are lame. What other authoring programs do NOT re-encode files that do not need it?
 

Danr

Administrator
Staff member
NVE does not always re-encode files, but so far we are haven't been able to figure out its criteria. Programs that don't renecode at all:

DVDLab, (excellent menu creation).
DVDAuthor GUI (freeware)
TMP DVD Author

I'm sure there are others as well.
 

neumannu47

New member
Thanks, Dan. I wonder if the NVE issue is a bug. It would be a great program for my needs if I could guarantee that it did not re-encode.

Now, when are you guys going to release an authoring program? The marketplace is crying for it, particularly one that will automatically accept your chapter marker file.
 

neumannu47

New member
DanR said:
NVE does not always re-encode files, but so far we are haven't been able to figure out its criteria.
There is some new information that I just read on another forum. Apparently there is a lot of variability allowable in the MPEG spec. If the specifications of the files do not match the specifications that NVE anticipates, it re-encodes. One person said that if the audio files do not match, NVE re-encodes. Another poster said that he download TMPEGEnc MPEG Editor (sorry) and it reported that there were parts of his file that were either error or out of spec.

I may download and play with TMPEGEnc MPEG Editor, if I get some time. (I've spent the whole weekend trying to get decent burns on my DVD burner.) I post here in case you guys want to do the same. There may be a spec in VRD+ that can be tightened that will cause NVE not to re-encode. One test I thought about doing was QSF on each file before I tried authoring. However, as I understand it, if an MPEG file is edited in VRD+, as they all are, QSF is applied by default.
 

Danr

Administrator
Staff member
Post your Tools>Show Program here, maybe we can see something obvious.
 

neumannu47

New member
The files are transferred from a ReplayTV, recorded in the Medium mode, which is MPEG-2 compliant. Ulead and DVD Author have no problem with them. Nero Vision always recodes them.
 

Attachments

neumannu47

New member
One further thought. I downloaded and installed the trial version of Tsunami MPEG Editor. When I tried to simulate an MPEG file from my ReplayTV, the error message I got is attached. So, I assume that the audio that ReplayTV creates is not MPEG-2 compliant, but DVD Author and Ulead pass it through. Apparently Nero requires that the files be fully DVD compliant. Any thoughts?
 

Attachments

phd

Super Moderator
Based upon the message you received, it sounds like Nero wants to see at least one audio track in Dolby or LPCM in order to accept an MPEG audio track.

In other words, if the audio is MPEG, it wants 2 audio tracks. One of which is Dolby or LPCM.
 

neumannu47

New member
phd said:
Based upon the message you received, it sounds like Nero wants to see at least one audio track in Dolby or LPCM in order to accept an MPEG audio track.
Apparently Tsunami's MPEG editor will convert the audio track at edit time to make it compatible. Is that feature something that VRD+ should consider adding? I really know nothing about the spec or how seriously the warning should be taken for player compatibility, but if Ulead and Tsunami are allowing me to make disks that may not play on some machines, that is not good. I would consider buying their editor for these files, but it will not run on a machine that does not have an Internet connection.
 

Danr

Administrator
Staff member
VideoReDo will create an LPCM track for you. Simply click on the Options button on the file save dialog.
 

Anole

Moderator
if it don't work, shoot it !

DanR said:
... Programs that don't renecode at all:
DVDLab, (excellent menu creation).
DVDAuthor GUI (freeware)
TMP DVD Author
So.... why again are we still beating a dead Nero Vision Express?
 

neumannu47

New member
I'll test that to see if it passes the competition's validation. If so, that could be a real problem solver. Does the additional audio track require additional disk space? Do you have any comments on how incomptable a disk is without the additional audio track?
 

neumannu47

New member
Anole said:
So.... why again are we still beating a dead Nero Vision Express?
Two reasons: 1) I already own Nero and would like to use it instead of having to buy another package that does the same or less, if I can solve the re-encoding matter, and 2) if these packages are allowing creation DVDs that may not play on some players because they allow deviation from the DVD spec, it is a cause for concern for me. Those seem like good reasons, to me.

If I have to spend more money, I'm inclined to buy TDA instead of MF4 because of the ability to modifiy templates. I'm glad I went back to TDA on my new computer as I have decided on MF4. On a side note, has anyone figured out how to get to the DVD burning screen in TDA without going through the authoring routine? The authoring screen appears at the end, but there must be a way to get to it otherwise.
 

TimA-C

Member
Reducing re-encoding in Nero

When I was playing around with Nero VE before finally choosing TMPGenc's DVD Author Pro for my main authoring tool, I used to run my edited mpg file through the 'Scan' feature of PVA Strumento (it's free and pretty quick!). This would give me the lowest, average, and highest bitrates used in the mpeg.

Then I'd load the mpeg into Nero VE, set chapter points, menus, etc. and then plug the numbers from PVA Strumento into the custom settings of Nero - basically trying to set Nero's output settings to match those of the mpeg I was authoring. As Nero shouldn't be doing anything to the mpeg file, I left it set to do a single pass rather than waste time doing 2 passes.

It seemed to work, and certainly took far less time to author than leaving Nero to it's own settings. It was just a pain having to run the stuff through PVA Strumento and then change the settings in Nero EVERY time. Besides, I didn't particularly like most of the buttons, frames, text options, or layouts available in Nero.

There may well be other utils that will give you the info needed to configure Nero's output, but PVA Strumento was the only one I could find at the time that I trusted.

Hope this of some help. Good Luck
 

neumannu47

New member
Thanks TimA-C. I definitely don't want to have to remember to jump through hoops every time I want to author a DVD, so it looks like TDA's the one. Now if I can only get good burns with my NEC 3550A drive.
 

Danr

Administrator
Staff member
Have you looked at the free tools like DVDAuthorGUI? Since you already have Nero to do the burning these might be a good lower cost alternative. There are a number of DVDAuthorGUI fans who hang out on this board.
 

neumannu47

New member
Yes, I have, but I'm not smart enough to use it, yet. Maybe I'll be smart enough after I spend a ton of money.

Also, Dan, I tried the audio track thing you suggested above, and as expected, it really added to the size of the resulting file. I guess I'm going to stick with TDA for now and just let it continue to make non-compliant DVD files, whatever that means.
 

Anole

Moderator
neumannu47 said:
Now if I can only get good burns with my NEC 3550A drive.
I run a pair of NEC 3520's. Burn two DVDs at a time. Great drives.
I was about to outfit my new (super) computer with a pair of 3550, and give away the -20's.
What's this about having problems?

I plan on buying the new drives this coming weekend, so you got my attention!
 

neumannu47

New member
I don't know yet. Go to the NEC forum on cdfreaks.com and read about them. They have a real problem with CD-DVD Speed from Nero. Some say that the results the program reports are erroneous; however, the disks I burn with mine show significant PIE and PIF errors, even though they appear to play fine on my DVD player.

The jury is still out, as far as I'm concerned. The NEC drives are very highly rated in many respects.
 
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