Quantcast Encoding: Best Bitrate and CQ Values? - digitalFAQ.com Forums [Archives]
  #1  
06-30-2003, 01:02 PM
dredj dredj is offline
Free Member
 
Join Date: Jun 2003
Posts: 48
Thanks: 0
Thanked 0 Times in 0 Posts
Hello Gurus,

I just want to ask which of this setting do you think will result best: (my source is a good VHS children's movies, and encoding at 352x240.

1. Min BR --> 1000
Max BR --> 2500
CQ --> 82

2. MinBR -->300
MAX BR --> 2500
CQ -->83

3. MinBR --> 2000
MAXBR --> 2500
CQ -->20

Thanks,
Dredj
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  
06-30-2003, 01:28 PM
dredj dredj is offline
Free Member
 
Join Date: Jun 2003
Posts: 48
Thanks: 0
Thanked 0 Times in 0 Posts
And one more:

MinBR- 1200
MaxBR - 2500
CQ- 80.710
Reply With Quote
  #3  
06-30-2003, 01:40 PM
dazedconfused dazedconfused is offline
Free Member
 
Join Date: Nov 2002
Posts: 316
Thanks: 0
Thanked 0 Times in 0 Posts
Well, I wouldn't consider myself a "guru" by any stretch of the imagination , but I'm fairly certain your #2 scenario would give the best results out of the 3 you listed. Using the lowest possible minimum bitrate that will play properly on your dvd player would allow more kbps for higher-action scenes that actually need it, giving you an overall better picture. This way, you're not wasting precious bitrate on scenes that don't need it.

Overall though, I think the best thing you could do for better quality (depending on the length of the movie and if it's widescreen or fullscreen) is probably to use a higher resolution than 352x240 (if your dvd player supports higher resolutions), even if it means a drop in CQ level. I've done encodes with 704x480 (CQ in high 50s) and 544x480 (CQ as low as ~54) resolutions, and they still gave quite acceptable (if not "good") quality. Quality is subjective though so your opinion of "general minimum acceptable CQ levels at certain resolutions" may differ from mine. You'd be surprised...with some sources, you can get away with dropping CQ pretty darn low and it will still look pretty good/acceptable...much better than using a lower resolution with a higher CQ.

Good luck,
-d&c
Reply With Quote
  #4  
06-30-2003, 02:02 PM
dredj dredj is offline
Free Member
 
Join Date: Jun 2003
Posts: 48
Thanks: 0
Thanked 0 Times in 0 Posts
thanks d&c, well the reason why I am staying away of the high resolution or basically 480 lines(for all my VHS capture through DV Cam passthrough and also using capture card) is because if I use this, the output of my video contains combing effect (as I posted on "my first KVCD"), Kwag told me to try IVTC, and I tried...but the the movie becomes jumpy, I also tried FieldDeinterlace and the movie result is still jumpy, hence I'm stuck on using 240 lines.

Thanks for the reply...i just want to know if increasing the minbitrate will have better result or not.

Dredj
Reply With Quote
Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
FFMPEG: Changing INTER portion values in the matrix for ffvfw poerschr Video Encoding and Conversion 2 02-19-2004 08:12 PM
vcd video encoding settings for max/min bitrate? J-Wo Video Encoding and Conversion 4 12-04-2003 11:34 AM
Equivalent Quality Values between CCE and TMPGEnc? beany101uk Video Encoding and Conversion 0 10-11-2003 01:26 PM
KDVD: CQ Values for KDVD with MA script? beany101uk Video Encoding and Conversion 7 08-03-2003 02:29 PM
Bitrates: CQ values dropping as it encodes? oxide Video Encoding and Conversion 1 07-29-2003 10:54 AM

Thread Tools



 
All times are GMT -5. The time now is 04:37 AM  —  vBulletin © Jelsoft Enterprises Ltd