Before we get started with this guide it would be
helpful if you read through the AVISynth
Guide first so you understand just what AVISynth is and what
it can do. That guide also explains how to install AVISynth, which
you will also need to do :).
What is Frameserving anyway? Frameserving is using
one utility to decode or read a video file and then, after it
has been decoded, sending it straight to any other video editing
or encoding application. For example, we could decode a DVD Vob
file using Flask Mpeg and then use AVISynth to 'frameserve' it
to another utility such as TMPGEnc and convert it to a SVCD or
VCD. Or we could frameserve it to VirtualDub and add filters and
effects before we encoded it into another format such as DivX
and so on. Frameserving is the holy grail of the video converting
scene because it allows us to pick and choose what encoders we
want to use without the need to convert our video file into a
huge uncompressed AVI format first!
Of course some formats and some utilities just cannot
support frameserving, so we still are limited to what we can do.
For now I will describe how to use the AVISynth plugin for Adobe
Premiere to frameserve from FlaskMpeg into almost any other application.
After you have installed AVISynth all you need to do to make
Flask Mpeg Frameserve is to copy and paste the CM-Avisynth.cm.flask
plugin (encircled in red above) into the same folder as Flask
Mpeg. This plugin was designed for Adobe Premiere so if you
want to use it with that too just rename it to cm-avisynth.cm.prm
and copy it into your Adobe Premiere's plugin's folder.
Frameserving from Flask Mpeg
It is technically possible to use AVISynth and an application
such as VirtualDub to convert a Vob into DivX or something like
that. But I think to try is a bit crazy, because it wasn't really
designed for that. You will almost always run into serious problems
if you try. Flask Mpeg, however, is another story. Flask has
a tried and tested with DVD reading and can convert almost any
DVD video including audio, multiangle titles, subtitles, keeping
correct aspect ratios, cropping and so on. In short, Flask Mpeg
is probably our best bet for decoding a DVD if we wish to frameserve
it to be used by another application such as TMPGEnc etc.
Ok, we have put the AVISynth Plugin into the Flask folder.
I'm assuming you have ripped and decoded the Vob files and IFO
files to your hard disk like have explained in my Flask Mpeg
guide. So imagine you were going to convert a DVD using Flask
Mpeg as normal. I have repeated the process breifly here so
just skim through it:
OPEN THE FILE WITH
Select 'Open DVD' and find the .IFO file for your
Up will pop something like the picture below:
Select the movie Duration, in this case 1.51.53. This will
usually be the first one in the list, but you can usually see
from the length which one to choose.
Next choose the language. Obviously they cannot ALL be English
so choose the first and encode a minuet of the film and listen
to it. If its not English choose the next in the list, and the
next and the next etc., until you find the correct one. Or open
the DVD in a DVD player and see the order they are in, usually
it will be the same.
Lastly we have subtitles. Flask is not always able to do subtitles
correctly, so again, you will have to try it and see. There
are other ways to get subtitles, though; why not check out my
subtitle ripping section for this.
Now Press FlasK this DVD!
GLOBAL PROJECT OPTIONS
Select Global Project options.
Frame Size: set the Width and Height.
Time Base (fps): Flask will normally choose
the best framerate for your movie. All PAL movies (European)
are 25 frames per second (fps). So if you know your movie is
PAL make sure your movie is set to 25. All North American movies
are NTSC which means they are 29.97 fps. BUT because of the
way they are encoded to DVD most will appear Flask will choose
23.976 fps. This is usually correct so don't change it. As always
test a short clip before you do a whole movie to make sure its
On to the Audio tab always select 'Decode audio'
if you want sound. For DVD's un-check the 'same as input box'
and select 48000 Hz (just to make sure you have the right setting).
Some utilities require you use 44100Hz so its tough noogie,
you may have audio synchronization problems because of this
depending on the application you are frameserving to.
POST PROCESSING TAB
This section deals almost exclusively with resizing.
Never use 'Nearest Neighbouring' unless you are not resizing
the picture because the quality is crud.
Keep aspect ratio: PAL users should always
tick this box unless you know you don't need it. This is even
more important with Widescreen DVD's. If you use NTSC DVD's
the image may become stretched slightly wrongly. If you notice
this uncheck the 'keep aspect ratio' and work out the ratio
yourself. See the article"Resizing DVD's with Correct
Aspect Ratios" in my appendix.
Crop & Letterboxing: All the settings
for cropping and letterboxing the DVD can be entered here or
the output pad can be used. For detailed information on how
to resize a movie in Flask read section 2nd of this guide: "resizing
OUTPUT FORMAT OPTIONS
Normally you would now be setting your output
But because we are frameserving we do not need
to do this so ignore that stuff. Instead go to 'Select Output
Format' and choose 'Link to AVISynth':
And then start converting as usual:
Then up will pop the following box telling you
what the file that Flask is frameserving out is called:
MAKING YOUR AVS FILE
If you recall my previous AVISynth guide you will
know what I'm talking about next. Open notepad and paste exactly
what AVISynth has just told us into it, namely:
This is the name of the video file that is being
frameserved from Flask Mpeg. The
name videoout0 will be whatever
you named your output in Flask, but thats not important because
the pop-up box has told us exactly what to write :).
Okay, save the file as whatever name you like
but put the extension. *.avs on
it instead of .txt or .doc.
I'm calling my text file video.avs. So
when I choose Save in notepad I will type the filename "video.avs"
make sure you use quotation marks (" ") to force notepad
to save it as avs instead of txt.
Again, it will not work if the text file is called
video.avs.txt or video.avs.doc
or something like that.
Thats it! Open the file we just made called: video.avs
in any encoder or utility that can open AVI files! For example,
open it in TMPGEnc and create a SVCD or VCD. TMPGEnc gives the
highest quality and most configurable settings of any SVCD or
VCD encoder I have ever seen - and its free! Just remember that
instead of opening the AVI just open the *.avs file you made
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