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Introductory DVD Authoring FAQ
Tyler Hawes, formerly with Audio Intervisual Design (and now a principal and Senior Colorist at Liquid DI), and guest contributor
Noah Kadner of High
Road Productions have authored this catch-all primer and FAQ
on general DVD Authoring & Encoding.
FAQ on Blu-ray Disc and HD DVD coming soon!
Posted January 14, 2003
General Issues
What is Authoring?
Authoring is the process of collecting audio, video, menus, subtitles,
etc into an interactive branching structure that will eventually
become a playable DVD. You need DVD authoring software to make a
playable DVD. There are several companies that develop this software,
including Sonic Solutions, Apple, Ulead, Pinnacle, and more.
Which Authoring Program do I get?
There are numerous DVD authoring programs intended for a wide range
of skill levels and budgets. We’ve divided them into four main categories:
Consumer, Prosumer, Professional, and Corporate. Most applications
fit into one of these categories, while a few blur the lines between
two or more. You’ll also want to consider the following factors
when making your decision:
- Platform: Mac and PC are the two contenders
here. There are many more choices and price points available on
the PC but many new users find the Mac solutions easier to use.
This can also depend a great deal on what systems you or your
company already has and which NLEs you work with. It’s up to you.
- Price – The most obvious and easily understandable
difference is how much your bank account will be hurting once
you plunk down the change for your shiny new DVD authoring program.
While more doesn’t always equal better, you get what you pay for,
and don’t believe everything you read. Expect to spend $250 to
$1,000 for consumer to prosumer level and $1,000 up for the fullest
featured programs.
- Feature support – The DVD specification supports
a lot of features, many of which are seldom used outside of big-budget
titles. There are no commercially available authoring tools that
support ALL of the DVD Specification's features. Sonic Solution’s
Scenarist (priced between $15,000 and $22,000 for software) comes
very close to that, supporting all features except seamless branching.
The rest all support more or less of the spec. In general, more
money equals more features.
- Learning curve – How easy is it to become productive
with this application? In general, the easier it is to use, the
less powerful the tool is. This is not to say that powerful applications
are hard to use, just that they take more of an up-front investment
in time to become proficient with them. The balance of learning
curve along with feature support and price has the most to do
with which category an application fits into.
- Proofing capabilities – It is only logical
that while you are creating your title, you’ll want to review
your progress. You could always burn a check-disk and play around
with it, but this is time consuming and costs money. Most authoring
software provides an emulation or preview to get an idea of how
your finished title will actually work. The quality of this proofing
varies wildly, from being a gross approximation that is really
not reliable for checking with, to hardware-based decoders that
are nearly check-disc accurate.
- Formatting engine – Once you’ve finished authoring
your disc, the program needs to multiplex the title and write
an image or file and folder structure. This is a function of the
formatting engine the product is built on, and is inherent in
the software’s core architecture. The formatting engine of the
software will, for better or for worse, effect the compatibility
of your disc with the numerous DVD players and DVD-ROM drives
that are in the marketplace. Authoring applications that are costlier
and more mature tend to have the best formatting engines because
they have had a longer time to develop, they were originally designed
for the expectations of professional users, and because other
hardware (DVD players, encoders, decoders, etc.) was tested against
using these systems as a baseline.
Now that you have considered these issues- let’s survey the 4 categories
of authoring software:
-
Consumer
Consumer authoring software ranges from $50 up to around $250.
They have a very limited set of features, with the basic requisite
being the ability to put video on a DVD with some rudimentary
chapter points and a menu. Priority is given to making the interface
very easy to learn at the sacrifice of control. Most use a template-driven
system where you choose a pre-designed interface and then customize
it (within limits) to your tastes. The proofing capabilities are
poor, and not to be trusted. Most do not have a very good formatting
engine, so you should not expect to make discs that are going
to have a high level of compatibility. However, this limitation
of the formatting is offset quite a lot by the very limited features
in most of these tools, which prevent you from implementing the
trickier functions of the DVD spec that might otherwise cause
problems. Examples: PC: Sonic Solutions MyDVD & DVDit!; Ulead
Dazzle; Mac: Apple iDVD.
-
Prosumer
Prosumer applications range from $250 to $1000 and in general
are beefed-up consumer apps. They add some of the most-desirable
and popular DVD features that are missing from their consumer
brethren, such as support for 16:9 (widescreen) video, surround
sound audio streams (Dolby AC-3 5.1), DLT drives, motion menus,
etc. At the lower end, the learning curve isn’t much different
from consumer apps. The costlier ones blur the line with professional
apps and require a bit more time to become proficient, but it
is worth it if you will use their features. Their proofing capabilities
are still mediocre at best, relying on a software emulation that
is still leaves you guessing at what your final title will really
work like. Some of these tools have improved formatting engines,
but many are using the same ones as their consumer equivalents.
Given that they support more features, this may mean they make
less-compatible discs because there is increased risk as you add
more complexity. Examples: PC Sonic Solutions DVDit! PE; Ulead
DVD Workshop; Pinnacle Impressions; Mac: Apple DVD Studio Pro.
-
Professional
Professional applications start at about $1,000 and range to
upwards of $22,000. They support most all of the DVD specification’s
features, including important ones such as copy-protection, region-coding,
DTS surround sound, multiple title sets, GPRMs, cell/pre/post
commands, sub-titling, etc. Because the objective is to satisfy
the most-demanding, 40-hour/week author, they can be very deep
tools to learn. The interfaces are much more literal, with more
micro-management than consumer/prosumer tools. The proofing capabilities
are often greatly improved, using hardware decoders that are very
close to the experience of an actual check disk. This has obvious
importance to a production-driven environment. The formatting
engines do vary from product to product, but most offer the best
compatibility to be had, even on complex titles. Examples: PC:
Sonic Solutions Scenarist; Mac: Sonic Solutions DVD Fusion, DVD
Creator; Apple DVD Studio Pro
-
Corporate
You may notice a hole in the categories above: The prosumer applications
are easy to use, but leave you handicapped by poor proofing, limited
features, and inadequate formatting engines. The professional tools
address these short-comings, but may be more of a learning-curve
than a video editor or multimedia producer wants in a product that
won’t be his most primary tool, not to mention the cost. Enter the
"Corporate" authoring tools, which are a relatively new
breed. The objective here is to offer as much of the power and quality
of a professional tools as possible without overloading the interface
and losing the ease of use found in consumer/prosumer tools. This
isn’t to say that corporate tools have the strengths of both with
none of their weaknesses, but rather that a different, more neutral
balance is struck. Corporate tools are best for user who want some
key professional features, including the all-important formatting
engine, but prefer not to deal with the steep learning curve of
professional tools (despite the benefits). These tools may be too
expensive still for consumer / prosumer use, and they don’t go far
enough for the true professional power user / control-freak. Hence
their unique niche among authoring tools. Examples: PC: Sonic Solutions
ReelDVD & DVD Producer.
Duplicators & "Burners"
Which DVD burner/recorder should I get?
The current consensus among pro users is that you’re best off getting
the latest Pioneer DVD-R General Media drive. That is what Apple
uses for their "Superdrive", so if you have a newer G4
you already have what you need. Right now this is the A04/104 drive,
although the A05/105 and above may be shipping by the time you read
this. The older A03/103 drive is still perfectly good, albeit a
bit slower on writing CDs. There are also a number of new drives
coming out featuring DVD+R technology (or both) that may gain favor,
but we’ll have to wait and see. Expect to spend $500 or less. Check
with CNET.com for up to date information.
What about those VCR-style DVD recorders such as the Panasonic
DMR-E30S?
These models are best suited to duplication applications, for example
dubbing a DV or VHS tape directly to DVD for viewing. The clips
created by these recorders can be used in an authoring program,
but not without demuxing them first. See the question regarding
taking footage off a burned DVD-R for details. Their authoring capabilities
are usually quite primitive. For example, the recorder may automatically
generate chapter points at a set interval. Some of the nicer ones
will add chapter points whenever you pause recording, and assemble
a simple menu of these chapter points. The quality of the encoding
is also limited and less flexible, typically providing a choice
of only 2 bit-rates (offering 1 hour and 2 hour record times for
example.) This is inefficient if your program is not exactly one
or two hours. If you want any kind of special features, advanced
interactivity, motion menus, etc- you’ll need a dedicated authoring
program.
What are muxing and demuxing?
They are short for multiplexing and demultiplexing, respectively.
Multiplexing is the process of building a project in your authoring
program so that it can be burned to DVD and read by a standard DVD
player. This is normally the last step in making a DVD, though you
will often multiplex to test the DVD as you author. Conversely,
demultiplexing is the process of taking a burned DVD and extracting
the original audio, video, etc. As you might expect, demuxing is
controversial and can be illegal depending on which DVD you are
demuxing. So please tread carefully.
MPEG, Encoding, Video Quality
What is MPEG-2?
MPEG stands for "Motion Picture Experts Group", which
is the standards committee that dreamed up the MPEG-2 compression
algorithm. MPEG-2 is the de-facto standard compression technology
used for DVD video. Video must be highly compressed so longer programs
can fit on a single disc. The longer the program, the greater the
amount compression required fit it on the disc. Higher compression
results in poorer video quality. That is why there is no standard
bit-rate, or amount of compression, for DVD video. Instead, compressionists
prefer to choose the highest bit rate they can (hence the lowest
compression) that still lets them fit everything on the disc. The
quality of a given MPEG encoder directly affects the quality of
the video on the disc.
What bitrate do I use for my video?
Always stay below 9.1 Mbps video and try this bitrate calculator
for specific settings:
http://www.vcdhelp.com/calc.htm
My final footage looks bad; do I need a better encoder?
You might, depending on how critical quality is vs. your budget.
In general, the MPEG-2 encoders included with authoring programs
such as Apple DVD Studio Pro and Sonic Solutions MyDVD can yield
decent to good image quality with short programs (<75 minutes).
However, they can be slow and the results can look sub-VHS at lower
bit rates, which are needed for the longer programs. This reduces
the amount of quality footage you can cram onto a DVD. To counter
this, you’ll want a better encoder.
What do CBR and VBR mean?
CBR stands for "Constant Bit Rate", while VBR stands
for "Variable Bit Rate". Bit rate is a measurement of
how much your MPEG-2 video is compressed. DVD video (not including
audio or overhead) can be anywhere from 1.5Mbps (Megabits per second)
to 9.2Mbps. When performing a CBR encode, all video is encoded to
MPEG-2 at the same (constant) bitrate. When performing a VBR encode,
the encoder intelligently varies the bitrate up and down as appropriate
to the given video segment. VBR is more efficient, because different
video segments are more or less complex than other segments. By
using a low bitrate on some, the encoder can then using a higher
bitrate on others. The idea is to only lower the bitrate when the
video is easy enough to encode that you won’t notice the higher
compression. As the compressionist, you define how much the encoder
is allowed to vary the bitrate (typically by entering a minimum,
maximum, and average bitrate).
In theory, you might think you should always use VBR because of
its higher efficiency. In practice, however, encoders can make mistakes
when they determine how much bitrate is needed for a given scene.
If they guess to low, they can create ugly artifacts. For this reason,
professional encoders offer features such as 2-pass VBR encoding
and segment re-encoding to help reduce these errors. But professional
encoders are expensive and 2-passes takes twice as long.
A good encoder using CBR will look great on shorter programs (up
to about an hour). At some point, you will decide it is worth it
to use VBR. There is no precise threshold for when to invoke VBR,
but most programs that runs more than 70 to 90 minutes will benefit
greatly from it.
What’s a software encoder vs. hardware encoder?
Software encoders- such as TMPG or the Apple encoder are programs
you run on the desktop. Typically they are slower because MPEG-2
encoding is an extraordinarily complex task and will bog down even
the fastest processors. Hardware encoders are typically add-in PCI
cards that have the encoding algorithms included on-board. These
encoders usually work in real-time. You plug in a video cable, hit
play and have an MPEG-2 file when you are done playing. The main
drawback to hardware encoding is cost.
Can I encode on a PC and author on a Mac?
Yes, and in fact this can be the best of both worlds. In general,
the encoders on the PC are better and faster and you can then network
or Firewire your encoded clip for authoring with DVDSP. iDVD cannot
accept 3rd party encodes.
My video editing card "X" offers MPEG-2 export to DVD,
how about that?
In general, the quality of this type of encoder is not ideal and
you will still want to get a dedicated encoder for serious work.
What is the difference between 2-pass and 1-pass encoding?
If you read above about VBR vs. CBR encoding, you’ll recall that
a VBR encoder will from time to time make mistakes when throttling
the bitrate. If it goes too low, you can get some nasty artifacts.
One feature found on professional encoders that helps reduce this
problem is 2-pass VBR. In a nutshell, the encoder will make a first
pass at encoding the video, then rewind and do it again. When finished,
the encoder analyzes the results before finalizing. By using 2 passes
and analysis, the encoder is less likely to err in choosing the
bitrates. For the really picky compressionist, he can then use segment
re-encoding to fix any errors.
What is Segment Re-Encoding?
Suppose you have a VBR encode and you find a glitch on a few frames
– what are you to do? Go back and re-encode the whole video and
hope for the best? If your encoder features segment re-encoding,
you can tell it to grab just the frames (or GOPs, to be completely
accurate) that have problems, and re-encode them at a new bit rate.
On big-budget titles like major movie releases, they will actually
view the entire movie frame by frame looking for any possible problem
during their quality-assurance process. As they find problems (you’d
be surprised how many there are when you’re paying this much attention
to detail), they mark them and set a new bitrate. When finished,
they hit "go" and the encoder re-encodes just the segments
they selected at the specified bitrates, integrating it with the
existing MPEG-2 (sometimes as a reference file).
What are some of the encoders out there?
Software Transcoders:
Software transcoders encode only from video files on disk into
MPEG2. You will need some other means of aquiring source from tape,
such as a video capture card or a file provided to you buy your
client on disk. The companies listed below are among those known
to make software transcoders.
Apple - Their
QuickTime encoder is included with DVD Studio Pro and iDVD. While
it is the fastest software encoder we know of, it has relatively
poor quality and efficiency and incapable of VBR encodes. Macintosh
only (of course).
Discreet
- Their Cleaner
software is available for Windows or Mac, but we donot recommended
it for DVD (MPEG2) encoding because it is extremely slow with no
noticeable improvement over Apple, CBR only.
Innobits
- Makers of Bitvice. More efficient than Apple, somewhat better
image quality, slow.
Heuris - Somewhat
better image quality than Apple, decent speed, very expensive.
Canopus -
Procoder
offers very good image quality, is very fast, moderately priced
($699). It is also capable of transcoding between PAL and NTSC and
encoding to/from just about any other video codec, such as web media
and HDTV. They also make SoftMPEG Encoder, which is bundled with
their nicer video capture cards but is not nearly as high quality
or flexible. Available for Windows.
TMPG - Excellent
image quality, efficient. Highly customizable, very inexpensive,
but slow.
Cinemacraft
- Comments: excellent image quality, decent speed, expensive.
Hardware Encoders:
Hardware encoders generally only accept input from external inputs,
typically from a tape or digital video disk player. The inexpensive
ones (<$4,000) have real-time speed as their main feature besides
the flexibility of hardware input. Professional hardware encoders
start at around $5,000 and rapidly move up in budget toward the
six-figure range and bring a variety of special features to the
compressionist, such as inverse-telecine, quality control features(segment
re-encoding, a/b comparison), 2-pass VBR, and very high image quality.
The companies listed below are among those known to make hardware
MPEG2 encoders for DVD.
WiredStream
- MediaPress Pro ($2,994 component YUV version, $4,495 SDI - Mac
only) is relatively inexpensive for an entry-level professional
encoder and has , reasonably good quality at moderate to high bitrates.
No AC3 audio encoding capabilities.
Sonic Solutions
- SD-500
($4,999 for Windows) is a flexible entry-level professional encoder
with good quality, 2-pass VBR, and AC3 stereo encoding through component
and FireWire inputs. It will also encode real-time from DV files
on disk and even acts as an OHCI FireWire controller for Adobe Premiere.
SD-1000
($9,999 for Windows/Mac) has excellent quality 2-pass VBR with SDI
inputs. SD-2000
($24,999 for Mac) is the same hardware as the SD-1000 but adds high
end features such as segment re-encoding, inverse telecine, progressive
scan option, and Sonic's multipass Constant-Q™ VBR technology.
Menus
How do I format stills and still menus for DVD?
Check the manual that came with your authoring program for details.
In general, you’ll want to design at 720X540 then resize when you
are done editing to 720X480 for NTSC and 720X576 for PAL. This is
to account for the difference in pixel aspect ratios between computer
monitors and broadcast monitors.
How do I make a motion menu?
First, make sure you have a solid understanding of how to make
a still menu before you try to tackle motion menus. Next, check
the manual of your DVD authoring software for step-by-step instructions.
The most important concept to grasp is that everything in the background
of a motion menu is a single movie clip. On top of this you have
a static 2-bit (4 solid colors) sub-picture overlay, just as you
do with a still menu. Let’s say for example you see a motion menu
that has a still background with one or two small clips floating
over it that play a looping movie. Those clips and the still background
are all one piece - most likely a movie clip created in an NLE or
a compositing program such as Adobe After Effects. Even if you only
want to have a still menu with a tiny bit of motion on it, you’ll
need to make it entirely outside of your authoring program. Some
authoring programs will do the compositing for you, but for best
results use a dedicated compositing program.
If motion backgrounds are a single movie clip, then how can the
motion change when I highlight a different button?
OK, so you’re watching the latest cool DVD from Hollywood Video,
and you notice that every time you move the button selection to
a new button, the motion background changes. A popular design is
to have buttons be still thumbnails that start moving when you highlight
them. How does this jive with what we said above? Well, movie the
button selection again, and this time do you notice the pause before
the menu responds? Yeah, isn’t that annoying? What the author did
was force the title to jump to a new menu every time you highlight
a different button. That’s how they get around the fact that the
background can only be one movie clip. Since the player has to load
an entirely new menu every time you move buttons, there is that
irritating pause. It’s up to you (and your client) to decide if
the pay-off is worth the delay.
Audio
What is AC-3?
AC-3 is an audio compression codec created by Dolby Labs and is
one of two audio formats that are universally compatible with all
DVD players in all regions. The other is PCM, which is the same
uncompressed audio signal that is on music CDs. Although "Dolby
Digital" is AC-3 by another name, an AC-3 signal does not imply
that the audio is in surround sound. An AC-3 signal can be mono,
stereo, 4-channel surround, 5-channel surround, or 5.1-channel surround.
By getting rid of sound information that humans have difficulty
discerning, AC-3 is able to highly compress audio while retaining
most of the perceived sonic quality. A stereo AC-3 stream typically
runs at 192KB/second, compared to 1,536KB/second for uncompressed
16-bit/48KHz PCM audio. Even 5.1 surround sound in AC-3 format is
typically encoded at just 224KB/second (surround sound is not supported
in PCM format on DVD). Other sound formats found on DVD video include
MPEG2 Layer 1 for legacy compatibility, and DTS for high-quality
surround sound (neither of which have universal compatibility).
NTSC/PAL
I’ve made an NTSC DVD; can people in Europe play it?
This can be a complex issue. DVD players in Europe are technically
capable of playing an NTSC DVD as long as it’s encoded with all
regions or at least region 2 selected. The viewer must also have
an NTSC compatible or multisystem TV to actually see the DVD. PC-based
DVD players do not have this limitation. Quite a lot of Europeans
own multisystem TVs, but not all. To guarantee European compatibility,
you’ll want to re-author the DVD in PAL. This requires two things:
re-encoding video assets and reformatting menus. Video should be
professionally converted from the source tapes at a pro dub house
for best quality and then re-encoded to PAL MPEG-2. This will also
resolve any potential audio conversion/speed issues. Menus have
to be reformatted from 720X480 to 720X576. Make sure the critical
elements are still within title safe. This is a good reason to hang
onto the original Photoshop files you used to create menus, as they
are normally designed at 720X540 and can be quickly resized for
PAL. As you might guess, re-purposing an NTSC title for PAL (or
vice-versa) can be a lot of work, so don’t underestimate the cost
or time investment.
I’ve made a PAL DVD; can blokes in the States see it?
Contrary to Europe, almost no consumer electronics sold in the
US support PAL. US users will be able to play it on a computer DVD-ROM
player, but that’s about it. If you need more compatibility than
that, you must re-encode and reformat for NTSC to make it playable
in the U.S., reversing the steps outlined above for NTSC to PAL
conversion. Make sure you select all regions or at least region
one for U.S. compatibility.
Ripping / Extraction / Media Issues
How do I extract footage from a DVD-R and put it into a new project?
Caveat: you MUST have the rights to such footage otherwise you
are breaking the law. For more info, see these sites:
www.vcdhelp.com
www.riphelp.com
What if I want to go back and re-edit a DVD?
Archive all the original media and project files, otherwise you
cannot easily re-open and re-edit a burned DVD. An exception would
be Sonic Solution's
OpenDVD™ technology, which allows supporting authoring software
to write metadata to a disc so the project can later be extracted
from a DVD you have authored. Currently DVD
Producer and MyDVD are the only authoring tools that support
it, but it is new.
Is DVD good to use for an editing master?
Not really- MPEG-2 video might look extremely sharp playing off
the DVD but it is highly compressed. Most NLEs cannot edit MPEG-2
video so you would need to recompress it back to DV or whichever
codec you normally edit with. You might find the quality hit and
time involved detrimental to your workflow. DV or Digibeta tapes
are still the better mastering formats. DVD can make a fine viewing
copy though.
DVD-R, DVD+R, DVD-RW, DVD+RW- what do I get?
DVD-R and DVD+R are the more compatible of the recordable formats.
Keep in mind that no recordable format is 100% compatible because
of older DVD players still widely in use and newer ones that haven’t
included support. The RW formats are nice because you can reuse
the media over and over but again they have lower compatibility.
For more details, check out vcdhelp.com.
Why doesn’t my DVD work on "X" player or PC?
Check out the compatibility reports at http://www.vcdhelp.com/dvdplayers
and make sure your player is listed as compatible. Otherwise there
is most likely an authoring mistake such as no startup action or
a menu that doesn’t jump anywhere.
How can I make my DVD 100% compatible?
There's no such thing as 100% guarantee. There is always a player
out there that might have a problem with a certain feature you author.
However, you can get very close to 100% if you replicate your DVD.
Most replication facilities have a minimum order of 1000 discs.
What is Duplication?
Duplication is simply making more DVD-R copies of your DVD. They
are quick to make and cheap in small quantities but less compatible
than replicated DVDs.
What is Replication?
Replication is an industrial process where your DVD-R or in some
cases DLT tape is used to create a glass master. That glass master
is then used to physically stamp copies out like a cookie cutter.
Those replicated DVDs are as compatible as any DVD you buy in the
store. The downside is cost. Most replicators require a minimum
run of at least 500 and you can expect total costs to be at least
$1,000. See www.dub-it.net for some example pricing.
What’s a DLT tape?
A somewhat aged recording format which records data to large tapes.
These drives are very expensive and usually require a SCSI interface.
Some replicators require a DVD project to be delivered on DLT tape.
This is only necessary for anything about a DVD-5. You should be
able to find a replicator that accepts DVD-R as a master. This will
be much easier and cheaper to create unless you happen to already
have a DLT drive. Some replicators will accept a built project on
a Firewire drive, removing the need for DLT entirely.
What’s a DVD-5, DVD-9, etc?
There are many different capacities of DVD. The one used by consumer
DVD burners is a DVD-5. It has one side and one layer- making its
total capacity about 4.2 GB. When we say layer we mean that a DVD
surface can actually have two slightly different layers that can
be read by the player’s laser. In general, most Hollywood DVDs are
DVD-9s: one side, two layers with a total capacity of 8.4 GB. So
you can see right off the bat it’s much harder to cram a feature-length
movie onto a ‘homemade’ DVD because of the smaller capacity. There
are also DVD-10s with two sides and one layer per side and finally
DVD-18s with two sides, two layers- but both are quite rare. Normally
Hollywood DVDs will simply go into a double or triple disc set of
DVD-9s.
What about those 9.4 GB DVD-Rs I see advertised?
These are basically two DVD-5s sandwiched together- one on each
side. They have to be authored separately- you can’t span one project
across both sides. Might be useful for putting a feature on one
side with special features on the other but a double disc set would
be just as good and you would retain the ability to put cover art
on the side without data.
What about printed DVD labels?
Professionals disagree on the effects of DVD labels. Some pros
have reported performance issues and even playback failures with
stick-on labels. Others have no trouble at all. You will want to
experiment. If you decide to use labels, make sure they are firmly
stuck on- no bubbles or overhanging edges. There are also several
DVD label printers that can print directly onto the surface of special
printable DVD-Rs. These printers can be expensive but these discs
are much more reliable than stick on labels and can look highly
professional with good artwork design.
DVD Studio Pro Issues
My audio is out of sync when I preview.
This is due to a bug in DVDSP’s timecode implementation. In general
everything will be in sync on the final disc if you created your
audio and video streams according to the manual. The quickest way
to make sure is build the project and preview the video_ts in Apple
DVD player. If it is still out of sync, burn a DVD. If that is still
out of sync then you have a problem. Go back and carefully redo
your encoding steps and make sure you are matching the video to
the right audio track.
What data rates do I use for audio and video?
The absolute max for a viable DVD on the Apple encoder is 9.1 Mbps.
To be safe you might go down a few Mbps, especially if you are not
replicating which will give you a bit more headroom. For stereo
audio, encode to AC-3 in A.Pack at the 2.0 setting at 192 Kbps.
The higher settings are for surround sound, which normally won’t
come up in most DV-originated projects.
Do I need Toast?
Toast Titanium is quite helpful for burning additional copies of
built DVDSP projects. It’s much more user friendly and straightforward
and can also be used to copy burned DVD-Rs to new DVD-Rs. You can
also use Toast to record data-only DVD-ROMs for backing files up,
etc.
How do I create DVDSP markers in FCP?
Check the Apple website for the latest procedure and make sure
you have the latest updates for FCP, DVDSP and QuickTime.
Is there any advantage to compressing to the Animation or None
codec before going to MPEG-2?
For footage that started as DV, typically there isn’t any advantage.
It can sometimes make a slight difference when creating CGI footage
or motion menus out of AfterFX. It is also a good idea to avoid
additional compression when exporting footage from a PC for use
with the Apple encoder. Experiment for best results in your own
workflow.
How do I preview a built project in Apple DVD player?
Make sure the choose video_ts option is checked and then select
the video_ts folder of your built project to play it. You’ll need
Apple DVD Player 2.7 or greater to do this.
My AC-3 audio level rides up and down in when I play it in Apple
DVD player.
Make sure the Dolby Encoding and Line Out options are checked in
Preferences and consider upgrading to the latest version of Apple
DVD player. The final DVD should sound fine.
I made some cool FX/Text layers in Photoshop but they disappear
in DVSDP.
Any text or FX layers you create in Photoshop need to be rendered.
To do this, create a new blank layer and merge it with the text
or FX layer. Do this for each layer you want to bring into DVDSP.
Make sure to save a copy with the unrendered layers first so you
can still go back and make changes in Photoshop.
I use a Media 100 for editing and my QuickTime files are 704x480,
what do I do?
You need to render them up to 720X480 or they can get distorted
once they get to MPEG-2. The easiest way to do this is to feed your
Media100 s-video out to a DV deck and tape it. Then capture this
tape and encode it to MPEG-2 in QuickTime. The quality is surprisingly
good. FCP allows you to go direct to MPEG-2 which is much faster.
Other Issues
My question wasn’t answered here.
Contact us to start a more in-depth
discussion of your questions and requirements.
This article © Copyright 2002 Noah Kadner
and Tyler A. Hawes, published with permission of the authors. All
rights reserved.
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