Newsgroup: it.comp.aiuto
Titolo: file *.mov

Chiedo scusa per il lungo documento allegato in coda e passo al quesito: ho
un file winrar che contione un filmato con estensione .mov (credo gestito da
QuickTime) e altri archivi rar contenenti file con estensione .qtx.
Dalla documentazione allegata mi sembra di capire che dovrei inserire i file
*.qtx nella cartella system32 di Windows 98 per visualizzare il filmato.
In effetti mi sono regolato cosě e vedendo che non funzionava ho provato a
lasciare i file (dovrebbero essere dei codec) *.qtx nella stessa cartella
del file *.mov. Ma nemmeno cosě funziona.
Vi propongo la documentazione nel caso, molto probabile, che non abbia
compreso bene e che voi ci capiate di piů.
Ciao e grazie.
-------------------------
Documentazione
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Avid QuickTime Codecs
Release 10.1 March 2001
Files Included:
AvidQTCodec.qtx - Avid ABVB/NuVista (version 9.3)
AvidQTAVJICodec.qtx - Avid Meridien Compressed (version 9.4)
AvidQTAVUICodec.qtx - Avid Meridien Uncompressed (version 9.4)
Installation Instructions:
You should make sure that no applications are running when installing the
codecs. For Win2k or WinNT open your WINNT folder. Inside that open your
System32 folder. If older versions of the Avid codecs were installed you
will find the files:
AvidQTCodec.qtx
AvidQTAVUICodec.qtx
AvidQTAVJICodec.qtx
If you want to save these files move them to another folder outside the
WINNT\System32 folder. Take the new files provided and move them to the
System32 folder. You do not need to restart your computer for the files to
be used.
What's changed in this release:
AvidQTCodec.qtx (Avid ABVB NuVista Codec)
* There were no changes to this codec.
AvidQTAVJICodec.qtx (Avid Meridien Compressed Codec)
* Input color levels were mistakenly changed in the previous version. A
color shift would be noticeable when moving media from Media Composer to
third party applications, such as Adobe After Effects, and then back in
Media Composer. This was fixed.
* The display of some media, on the Macintosh G4 only, might be corrupted
along the left side of image resulting in a "comb" like effect vertically
along the image. This was fixed.
AvidQTAVUICodec.qtx (Avid Meridien Uncompressed Codec)
* Input color levels were mistakenly changed in the previous version. A
color shift would be noticeable when moving media from Media Composer to
third party applications, such as Adobe After Effects, and then back in
Media Composer. This was fixed.
Common questions and answers:
1. Why are there three codecs?
With the advent of QuickTime Reference movies new abilities of the codec
were needed. The original codec was not up to the task and so we decided to
rewrite the codec. The original codec continued handling the Mac
ABVB/NuVista resolutions (AVR) and the two new codecs were introduced. All
compressed resolutions are in the Meridien Compressed codec and the
uncompressed resolutions are handled by the Meridien Uncompressed codec.
2. Can I move media created on the Mac to the PC and vice versa?
Yes. Media is cross-platform compatible.
3. What is meant by "Input Color Levels"?
Avid's Media Composer uses a YCrCb color space for it's native format as
defined by the ITU CCIR 601 standard. Valid values range from 16-235. Some
applications deal with pixels in RGB color space where values can range from
0-255. The codecs allow the user to select the input pixel color space. When
you export media from Composer using "Same as Source" or QuickTime Reference
the pixels are at 601 color levels and so the codec, when it decompresses
the media, will keep the resulting RGB pixels in the range of 16-235. With
some applications, such as Adobe After Effects, you can select which color
levels should be used in the application. When you eventually render your
material for re-import into Media Composer you should select the 601 color
levels for input. If your application does not support this option then you
should select the "Full Range 0-255" option in the codec. This will instruct
the codec to map the input pixels from the 0-255 range into the 16-235
range.
4. Why do I get errors when I compress or render my movies?
The Avid codecs are designed to create media that will then be imported into
Media Composer in the fastest way possible to decrease the user's workflow
time. They are not designed for general use or streaming use. Therefore the
codecs only support those media sizes that Media Composer will use. For NTSC
the sizes for full frame are 720x486 and in PAL the size is 720x576. For the
single field resolutions the size for NTSC is 352x243 and for PAL 352x288.
The "M" (MultiCam) resolutions are NTSC 288x243 and for PAL 288x288. No
other sizes are acceptable for the Meridien Compressed or Meridien
Uncompressed resolutions. The ABVB/NuVista codec does allow other sizes
because historically it always used to. However, any imports of ABVB/NuVista
media will be slow going into a Meridien based system.
5. What are the correct sizes for my rendered movies?
NTSC
Full Frame       720x486
Single Field     352x243
Multicam         288x243
PAL
Full Frame       720x576
Single Field     352x288
Multicam         288x288

 installazione manuale dei codec.
Ho già quicktime intsllato e aggiornato. Credi che sia il caso di installare
una nuova versione?
Tra l'altro, nel tentativo di aprire il file, una finestra di messaggio di
quicktime mi avvisa che il programma necessario per l'apetura del file non
viene trovato nemmeno sul server di quicktime stesso. E in pratica, io ho
solo l'audio del filmato.
Ciao