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3 hours DVD: Double Layer an option for replication?

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Michele Crosta
3 hours DVD: Double Layer an option for replication?
on Jan 12, 2011 at 7:26:07 pm

Hi everybody,
my Client is interested in replicating 1000 copies of a DVD which should contain 3 hours of video.
If I burn all the timelines onto a single DVD the datarate goes to 2,1Mbps, which is really awful.
I read about the issues of authoring a DL disc.
In your experience would it be a real option for this?
Is it safe to burn a DL and replicate it?

Many thanks,
Michele


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Daniel Ludwig
Re: 3 hours DVD: Double Layer an option for replication?
on Jan 13, 2011 at 3:13:56 am

hi michele,
yes - to author a DL-DVD is an option, if you would like to create a DVD with approx 3h video on the disk.

if you´re using AC-3 audio@192kbit/s this would lead your target-data-rate to 5.8Mbit/s. this is quite good if you are using a VBR encoding.

to send a video-DVD burned on a DVD-DL to replication is no good idea at all. you could get some serious issues by doing this!

please look at my post over here: http://forums.creativecow.net/readpost/145/869067

cheers

danny


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Michele Crosta
Re: 3 hours DVD: Double Layer an option for replication?
on Jan 13, 2011 at 8:48:07 am

hi danny,
I tried to make a single disc but as I start adding the video files to the project (there are 12 video files and 2 menus for a total of 15 buttons) the available space runs soon to zero and I have to drastically lower the datarate. I tried several times with different decreasing datarates and the only one which allows me to put everything on the disc is a 2-pass VBR, Avg 2,1 Mbps, Max 5,3 Mbps, with audio AAC@192.
I also tried with a datarate calculator and the result is similar to what you mention (5,8), so I cannot understand the trick!
What could the problem be: the 12 timelines (would one be better?) or the 15 buttons ? There is something which erodes disc space (apart from the video files) and I cannot locate it...
Any help is appreciated.

Many thanks,
Michele


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Daniel Ludwig
Re: 3 hours DVD: Double Layer an option for replication?
on Jan 13, 2011 at 6:31:57 pm

hi again,
first of all - AAC audio is not allowed for DVD. according to the DVD-specs you can use PCM audio (wav/aif) or dolby digital-audio AC-3 or finally MPEG audio and DTS audio.

as AAC is not allowed, encore will transcode your audio to PCM-audio or dobly digital audio, depending on your transcoding-settings within your project-settings.

you should use dolby AC3, 192kbit/s for your stereo-file.

have you transcode your files using adobe media encoder prior authoring or did you import the AVI/MOV-files into encore?

if this is your workflow - encore will use it´s encoding-settings for transcoding to MPEG2 and the selected audio!

if you used PCM-audio as transcoding-setting, that will lead result in to much data, as PCM audio have 1.500kbit/s data-rate.

so please use media encoder for audio-and video-transcding.

cheers

danny


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Michele Crosta
Re: 3 hours DVD: Double Layer an option for replication?
on Jan 13, 2011 at 8:38:19 pm

Hi,
sorry! I wrote AAC but I meant AC3. I didn't use media encoder for the encoding but Compressor.
As you suggest I'll try two options: import the original files into encore and have it transcode them, and, second, transcode everything with media encoder.
Thanks

Cheers,
Michele


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Daniel Ludwig
Re: 3 hours DVD: Double Layer an option for replication?
on Jan 13, 2011 at 10:06:32 pm

michele,
if you allready transcoded your video and audio with compressor that will be ok...

I´ve figured out (with a BD-production) that encore seem to have a bug calculateing the disc-capacity.

haven´t tested this again - wanted to do this a few times...

I´ll do this in the next days - I have enough material for SL and DL-tests, as I created a lot DVDs using DVD Studio.

but here is a question for you - if you are using compressor for transcoding I´m sure that you´ll have DVD Studio as well, why not using it?

it´s a lot better than encore for DVD-authoring.

cheers

danny


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Michele Crosta
Re: 3 hours DVD: Double Layer an option for replication?
on Jan 14, 2011 at 8:51:07 am

that's a good question.
I used a lot DVD studio Pro, but my I started offering my Clients for their projects, in addition to DVDs, also BD and Flash, so it's easier for me to use a single Encore project and obtain 3 different products in one click. That's why.
You mention a possible bug, maybe it's true. When I add the first 2 3-minute videos and the 2 complete menus (15 buttons), the disc capacity is already up to round 2GB (which is unrealistic). So, when I start adding the long videos, the disc gets full in a wink and I have to reduce drastically the datarate (down to 2,1Mbps).
Maybe I'll give a try with DVD Studio Pro too.
Thanks

Cheers,
Michele


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Daniel Ludwig
Re: 3 hours DVD: Double Layer an option for replication?
on Jan 14, 2011 at 7:54:21 pm

hi again,
I tested one simple DVD-project that I allready authored with DVD SP, and the result is OK - no miss-calculation at the moment.

my test-DVD ended OK - DVD-calculation OK, and also a BD-project that I tried to reset to DVD (incl. transcoding).

maybe you need to create a new project-file, perhaps it is corrupted.

cheers

danny


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Monique Van Deursen
How to burn 3 hours footage on a SL dvd
on Dec 7, 2012 at 6:05:59 pm

Hi, i have the same problem. I have a client who wants to have 3 hour footage on one dvd. Several menus and buttons. Tekst and audio also. It is a work out video.
I always burn 1 hour 10 minutes on 1 dvd. Just to make sure it will play well. But this ia a very intersting project for my business, so i want to be able to burn 3 hours on 1 disc, but how?
Thank you in advance
Monique


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