Quantcast What Resolution Should I use for a Source with a Resolution of 576x240 PAL? - digitalFAQ.com Forums [Archives]
  #1  
05-04-2003, 04:24 PM
Wolfi Wolfi is offline
Free Member
 
Join Date: Oct 2002
Location: Sweden
Posts: 489
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to Wolfi Send a message via MSN to Wolfi Send a message via Yahoo to Wolfi
Simply, what resolution should I use for a source with a resolution of 576x240 PAL

//Wolfi
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  
05-04-2003, 04:29 PM
conquest10 conquest10 is offline
Free Member
 
Join Date: Dec 2002
Posts: 98
Thanks: 0
Thanked 0 Times in 0 Posts
528/544x576
Reply With Quote
  #3  
05-05-2003, 05:20 AM
Abond Abond is offline
Free Member
 
Join Date: Mar 2003
Posts: 243
Thanks: 0
Thanked 0 Times in 0 Posts
I don't know if it is good idea. Usually I try to encode in such a way, that the encoded file has equall or less pixels for frame than the source. The reason - in the source file there is information for the pixels regarding the resolution. If one try to encode with the resolution, which require more pixels should expect decrease of quality as the information for the extra pixels don't exist at all. In the case - 576X240 = 138240 pixels. If the aspect ratio is 2.35:1 then 528 X 432 = 228096 pixels. I would suggest to encode with 352 X 288. You have 352 X 216 = 76032 pixels. The 432 and 216 values are only for the picture, the remain are black borders. I hope this make sense.
Reply With Quote
  #4  
05-05-2003, 05:56 AM
Jellygoose Jellygoose is offline
Free Member
 
Join Date: Jun 2002
Location: Germany
Posts: 1,288
Thanks: 0
Thanked 0 Times in 0 Posts
Theoretically you're right Abond. However, I found out for myself, that upscaling with "BicubicResize" gives me excellent results. When you encode this with such a low resolution, I'm sure picture will look worse. However you should try out what best suits you
If you decide to upscale, use a precise BicubicResize.
__________________
j3llyG0053
Reply With Quote
  #5  
05-05-2003, 09:44 AM
Wolfi Wolfi is offline
Free Member
 
Join Date: Oct 2002
Location: Sweden
Posts: 489
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to Wolfi Send a message via MSN to Wolfi Send a message via Yahoo to Wolfi
so there is no good resolution in the middle of 352x288 and 528x576

//Wolfi
Reply With Quote
  #6  
05-05-2003, 09:58 AM
Boulder Boulder is offline
Free Member
 
Join Date: Sep 2002
Location: Lahti, Finland
Posts: 1,652
Thanks: 0
Thanked 0 Times in 0 Posts
352x576, CVD resolution. I use it from time to time.
Reply With Quote
  #7  
05-05-2003, 10:10 AM
bman bman is offline
Free Member
 
Join Date: Apr 2002
Posts: 356
Thanks: 0
Thanked 0 Times in 0 Posts
In this case I prefere 352x240 .
Your source is 576x240 - just 240 lines . If u go to higher res I dont think u'll get better picture .
Go for 352x240 with highest CQ value with little sharpening u'll get best u can .
Want to be sure make small clips and compare
bman
Reply With Quote
  #8  
05-05-2003, 10:16 AM
Wolfi Wolfi is offline
Free Member
 
Join Date: Oct 2002
Location: Sweden
Posts: 489
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to Wolfi Send a message via MSN to Wolfi Send a message via Yahoo to Wolfi
SVCD or VCD, how will give me the best quality

//Wolfi
Reply With Quote
  #9  
05-05-2003, 10:24 AM
bman bman is offline
Free Member
 
Join Date: Apr 2002
Posts: 356
Thanks: 0
Thanked 0 Times in 0 Posts
U are using KVCD temlates right ?
So , quality u'll get even with 352x240 will be much higher than VCD - xVCD (KVCD).
If source is HQ than u can expect quality almoast SVCD .
bman
Reply With Quote
  #10  
05-05-2003, 10:29 AM
Wolfi Wolfi is offline
Free Member
 
Join Date: Oct 2002
Location: Sweden
Posts: 489
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to Wolfi Send a message via MSN to Wolfi Send a message via Yahoo to Wolfi
Quote:
Originally Posted by bman
U are using KVCD temlates right ?
So , quality u'll get even with 352x240 will be much higher than VCD - xVCD (KVCD).
If source is HQ than u can expect quality almoast SVCD .
bman
But should I choose SVCD as MPEG strem type or VCD
EDIT: Why should'nt I have this resolution, 352x480

//Wolfi
Reply With Quote
  #11  
05-05-2003, 10:44 AM
bman bman is offline
Free Member
 
Join Date: Apr 2002
Posts: 356
Thanks: 0
Thanked 0 Times in 0 Posts
I didn't say do not use 352x480 .
Just , try and see . Take same episode and encode it with 352x480 , 352x240 , 480x480 or even 704x480 if your player can support it and compare them . This test shoud take about half an hour but than u'll be sure in your choise .
Which stream svcd or vcd ??? I don't follow exectly what u mean !
Try to encode as mpeg1 as egreed that TMPGenc is best for it .
bman
Reply With Quote
  #12  
05-05-2003, 10:57 AM
jorel jorel is offline
Invalid Email / Banned / Spammer
 
Join Date: Aug 2002
Location: Brasil - MG - third stone from the sun
Posts: 5,570
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by bman
I didn't say do not use 352x480 .
Just , try and see . Take same episode and encode it with 352x480 , 352x240 , 480x480 or even 704x480 if your player can support it and compare them . This test shoud take about half an hour but than u'll be sure in your choise .
Which stream svcd or vcd ??? I don't follow exectly what u mean !
Try to encode as mpeg1 as egreed that TMPGenc is best for it .
bman
excuse my ignorance:


704x480 is for ntsc?
ashamed thanks!
Reply With Quote
  #13  
05-05-2003, 11:19 AM
dazedconfused dazedconfused is offline
Free Member
 
Join Date: Nov 2002
Posts: 316
Thanks: 0
Thanked 0 Times in 0 Posts
Quote:
Originally Posted by jorel
704x480 is for ntsc?
ashamed thanks!
Yes, 704x480 for NTSC, 704x576 for PAL.

-d&c
Reply With Quote
  #14  
05-05-2003, 11:22 AM
Wolfi Wolfi is offline
Free Member
 
Join Date: Oct 2002
Location: Sweden
Posts: 489
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to Wolfi Send a message via MSN to Wolfi Send a message via Yahoo to Wolfi
Quote:
Originally Posted by bman
I didn't say do not use 352x480 .
Just , try and see . Take same episode and encode it with 352x480 , 352x240 , 480x480 or even 704x480 if your player can support it and compare them . This test shoud take about half an hour but than u'll be sure in your choise .
Which stream svcd or vcd ??? I don't follow exectly what u mean !
Try to encode as mpeg1 as egreed that TMPGenc is best for it .
bman
Ah, I mean witch stream type I should select in ToK
Is'nt also res. 480x480 NTSC

//Wolfi
Reply With Quote
  #15  
05-05-2003, 11:28 AM
bman bman is offline
Free Member
 
Join Date: Apr 2002
Posts: 356
Thanks: 0
Thanked 0 Times in 0 Posts
Select VCD !
As your source is 576x240 I assumed that your source is 23.976fps and NTSC .
If I'm wrong than sorry ?!
bman
Reply With Quote
  #16  
05-05-2003, 11:44 AM
Wolfi Wolfi is offline
Free Member
 
Join Date: Oct 2002
Location: Sweden
Posts: 489
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to Wolfi Send a message via MSN to Wolfi Send a message via Yahoo to Wolfi
Quote:
Originally Posted by bman
Select VCD !
As your source is 576x240 I assumed that your source is 23.976fps and NTSC .
If I'm wrong than sorry ?!
bman
576x240, 25.000 (PAL) :P So you mean 480x480 is NTSC

//Wolfi
Reply With Quote
  #17  
05-05-2003, 12:05 PM
Wolfi Wolfi is offline
Free Member
 
Join Date: Oct 2002
Location: Sweden
Posts: 489
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to Wolfi Send a message via MSN to Wolfi Send a message via Yahoo to Wolfi
My source quality is actually very good so dont you think I should use a higher resolution then 352x288

//Wolfi
Reply With Quote
  #18  
05-05-2003, 12:24 PM
Jellygoose Jellygoose is offline
Free Member
 
Join Date: Jun 2002
Location: Germany
Posts: 1,288
Thanks: 0
Thanked 0 Times in 0 Posts
Hey Wolfi, we can't do the job of trying out yourself for you
I'd say you can easily get away with 528x576 (PAL) if your player supports it, but upscale with BicubicResizer. However, opinions differ, so you just gotta try out what you like better...
__________________
j3llyG0053
Reply With Quote
  #19  
05-05-2003, 12:39 PM
Wolfi Wolfi is offline
Free Member
 
Join Date: Oct 2002
Location: Sweden
Posts: 489
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via AIM to Wolfi Send a message via MSN to Wolfi Send a message via Yahoo to Wolfi
Quote:
Originally Posted by Jellygoose
Hey Wolfi, we can't do the job of trying out yourself for you
I'd say you can easily get away with 528x576 (PAL) if your player supports it, but upscale with BicubicResizer. However, opinions differ, so you just gotta try out what you like better...
Well it supports 544x480 NTSC so I suppose it will support 528x576 If I choose to encode with 528x576, should I select MPEG-2 or MPEG-1 as stream type in ToK

Using this script

ConvertToYUY2()
LegalClip()
GripCrop( width=xxx, height=xxx, overscan=0 )
GripSize(resizer="BicubicResize")
STMedianFilter(10, 30, 0, 0, 10, 30)
SpaceDust()
unfilter(50,50)
temporalsmoother(1,2)
mergechroma(blur(1.5)
mergeluma(blur(0.3))
DctFilter(1,1,1,1,1,.5,.5,0)
GripBorders()
Letterbox(0,0,32,32)
LegalClip()

//Wolfi
Reply With Quote
  #20  
05-05-2003, 12:58 PM
Jellygoose Jellygoose is offline
Free Member
 
Join Date: Jun 2002
Location: Germany
Posts: 1,288
Thanks: 0
Thanked 0 Times in 0 Posts
If you live in a NTSC Zone, encode at 544x480 instead of 544x576. However, you overscan way to much at the end. Change the values to this: Letterbox(0,0,18,1. The resolution is too low to overlap 32 pixel on each side.
Also lower the LumaBlur to 0.15 in this script, or the picture will get to soft.
__________________
j3llyG0053
Reply With Quote
Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
Resolution xaxgo Conversion et d'Encodage de Vidéo (Français) 8 04-07-2004 12:09 AM
TMPGEnc: Quality of Template Resolution VS Standard Resolution? afx Video Encoding and Conversion 1 12-29-2003 07:56 PM
best resolution for KVCD from a DVD source? Zyphon Video Encoding and Conversion 4 10-24-2003 12:31 PM
Kvcd resolution bigger than source resolution? Kane Video Encoding and Conversion 13 05-15-2003 06:24 PM
KVCD: Low resolution source and KVCDx3? J-Wo Video Encoding and Conversion 5 02-17-2003 10:05 PM

Thread Tools



 
All times are GMT -5. The time now is 02:24 AM  —  vBulletin © Jelsoft Enterprises Ltd