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Is Glass mastering needed?
The husband is gone to Africa for 2.5 weeks and I have an issue that needs answered ASAP. We did a 56 minute DVD project for our local Friends of the Library group (For Free) It was a production of a Lewis & Clark re-enactment commemorating the meeting of Lewis and Clark and the Nez Perce Indians, 200 years to the date and with desendants of William Clark and the Corps of Discovery. (So its very special). We used Adobe Premiere and burnt a Master DVD. From the master I burned 125 DVDs. I used a single external Iomega burner that I have used for a couple of years burning 30 minute DVDs with no problem. We also used the internal DVD that came with our BRAND NEW HP system. The 100 DVD were HP and the other 25 were another brand. We started getting DVDs back saying they had blips and would freeze up and not work.
I was told by a friend it was because of Encoding for Copyright infringement protection and something to do with Sony. And had something to do with the length of the original being over 20 minutes. He said I needed to have a glass master produced.
I asked another friend that has a production company too and she had never heard of this and had not encountered any problems and that I just needed to do a slower burn speed.
The re-enactment company took 35 of theses DVD and only 6 work. They are wanting them replaced but I need to make sure any news ones will work. Can somewhere point me in the direction of the problem. Is it the quality of the DVDS? Is it the burner? or do I need to have a glass master made?Thanks
Terri SummerfieldR Summerfield
Shiloh Outdoor Productions -
5 Replies
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[R Summerfield] “We started getting DVDs back saying they had blips and would freeze up and not work.”
This usually indicates 2 things:
1) An extremely high bitrate and/or
2) Inferior media[R Summerfield] “He said I needed to have a glass master produced.”
This is incorrect. I burn thousands of DVDs a year and have only created glass masters if the quantity of a single product was greater than 1000.[R Summerfield] “The re-enactment company took 35 of theses DVD and only 6 work”
This indicates inferior media. What brand are you using? Also before answering that question, please read my article: https://asvideoproductions.com/video/articles/dvdinfo.pdf
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Ok, I understand DVD’s a little better now and have ordered some Taiyo Yudens. My master copy is on (Yikes!) a retail store (Staples) brand. I ran it through the scandisk and it comes up clean. Since this is clean and error free, can I assume it is ok to make copies off of or should I burn a new master on the new DVDs when they arrive and at a slow speed? Or is a clean copy and clean copy? I have scaned one of the returned DVD’s and it came up with some bad spots. The 100 pack brand was HP. I plan to scan all the returned DVDs. Once they are burned with errors, you just have to pitch them right?
You mentioned something about high bitrate.. What does that mean?Thanks for your assistance.
Terri
R Summerfield
Shiloh Outdoor Productions -
Bitrate is essentially the encoding rate. However, that depends on the duration of your video.
Also, what is the MediaID. As mentioned in the article, DVD brand is useless. .
[R Summerfield] “My master copy is on (Yikes!) a retail store (Staples) brand.”
It really doesn’t matter what your master is on. My workflow is to create a DVD Image and then use ImgBurn to burn the DVD images (this is a free program). It works accurately and even has the option of verifying the DVD after creation. I would reccomend that you use this method as well. It will save you a lot of headache down the line.[R Summerfield] “I have scaned one of the returned DVD’s and it came up with some bad spots.”
Bad spots = trash the DVD. I throw away a DVD even it has one error. For me, it isn’t worth the headache, especially when DVDs cost around $0.40.Aanarav Sareen
premiere@asvideoproductions.com -
It appears that most of the bad discs have a MID of CMC MAG.AEI. The other MID is Fujifilm03. Some of these are bad but not as many.
In your article you make reference to not using adhesive labels. We applied an adhesive label to all these discs. They were printed with a laser printer. Could this have caused the problem? The master does not have a label on it. How does the label affect the disc?
R Summerfield
Shiloh Outdoor Productions -
While it would seem most likely that your current problem this time is dodgy media, it’s not a very good idea to stick labels on DVD’s – there are loads of inkjet printable blank discs out there and (for example) the fairly low-cost (80 GBP) Epson R300 printer does a nice job.
DVD players run very hot and can eventually, I’m told, melt the adhesive on inferior labels, and if you don’t get the label centered correctly you might also cause a problem in a player.
The destination is not important..its the journey that matters.
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