Quantcast Does the File Prediction Work for MPEG-2 Templates? - digitalFAQ.com Forums [Archives]
  #1  
01-20-2003, 06:29 PM
titans_ca titans_ca is offline
Free Member
 
Join Date: Sep 2002
Location: Toronto
Posts: 22
Thanks: 0
Thanked 0 Times in 0 Posts
The file prediction dosen't seem to work very well when I use the MPEG-2 templates, is it just me? or is it that it dosen't work for svcds?

thanks for the help.
Reply With Quote
Someday, 12:01 PM
admin's Avatar
Site Staff / Ad Manager
 
Join Date: Dec 2002
Posts: 42
Thanks: ∞
Thanked 42 Times in 42 Posts
  #2  
01-20-2003, 06:31 PM
kwag kwag is offline
Free Member
 
Join Date: Apr 2002
Location: Puerto Rico, USA
Posts: 13,537
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by titans_ca
The file prediction dosen't seem to work very well when I use the MPEG-2 templates, is it just me? or is it that it dosen't work for svcds?

thanks for the help.
As long as you use one of the KVCD templates, it should work. It was heavily tested with the KVCD matrix and GOP. Not with standard TMPEG parameters.

-kwag
Reply With Quote
  #3  
01-20-2003, 06:40 PM
titans_ca titans_ca is offline
Free Member
 
Join Date: Sep 2002
Location: Toronto
Posts: 22
Thanks: 0
Thanked 0 Times in 0 Posts
would it cause a big difference in the prediction if the source file is a divx animation file?
Reply With Quote
  #4  
01-20-2003, 07:04 PM
kwag kwag is offline
Free Member
 
Join Date: Apr 2002
Location: Puerto Rico, USA
Posts: 13,537
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by titans_ca
would it cause a big difference in the prediction if the source file is a divx animation file?
It really shouldn't matter, because you're sampling the complete source at a number of intervals, which is proportional to the playing time of the material. So the longer the material, the more snapshots are taken. That is, as long as you follow the formula: MPEG size = ((Total frames/MovieTimeInMinutes)/24) * MPEG sample file size

-kwag
Reply With Quote
  #5  
01-20-2003, 08:34 PM
titans_ca titans_ca is offline
Free Member
 
Join Date: Sep 2002
Location: Toronto
Posts: 22
Thanks: 0
Thanked 0 Times in 0 Posts
So would the length of the file affect the accuracy of the prediction? since the file I'm encoding is 23 min 31 sec.
Reply With Quote
  #6  
01-20-2003, 08:56 PM
kwag kwag is offline
Free Member
 
Join Date: Apr 2002
Location: Puerto Rico, USA
Posts: 13,537
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by titans_ca
So would the length of the file affect the accuracy of the prediction? since the file I'm encoding is 23 min 31 sec.
The rule is very simple: The more samples you take, the higher the accuracy. BTW, if you want to put a 23 minute video on a CD-R, and only that video will go in the CD-R, hell! increase your CQ to 100 and encode You'll fit that video in one CD with room to spare

-kwag
Reply With Quote
  #7  
01-22-2003, 06:05 PM
titans_ca titans_ca is offline
Free Member
 
Join Date: Sep 2002
Location: Toronto
Posts: 22
Thanks: 0
Thanked 0 Times in 0 Posts
As i mentioned before, the file I'm encoding is only 20 min long, and I would like the sampler to make a longer sample, so as to get a more accurate result, would the following script be correct?

Sampler(samples=90, length=24)
## MPEG size = ((Total frames/MovieTimeInMinutes)/24) * MPEG sample file size ##

so what equation should I use?
Reply With Quote
Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
Is it possible to use Kvcd Templates on an Mpeg file ? SinatraFan Video Encoding and Conversion 10 06-18-2003 03:08 PM
KVCD templates only work with WMP? ezysk Video Encoding and Conversion 2 05-10-2003 01:03 PM
MPEG Mediator: File Prediction with Mediator/BBMEG criddle Video Encoding and Conversion 3 03-13-2003 05:03 PM
New Templates: Need for an Automated File Prediction Gaudi Avisynth Scripting 2 01-13-2003 02:32 AM
KVCD: Templates only work in MPEG-1 System (VBR), not non-standard? bsbeck Video Encoding and Conversion 2 01-01-2003 06:50 PM

Thread Tools



 
All times are GMT -5. The time now is 04:48 AM  —  vBulletin Jelsoft Enterprises Ltd