Quantcast YMPEG 2.1b Released! - digitalFAQ.com Forums [Archives]
  #1  
10-10-2004, 01:08 AM
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
http://www.ympeg.com/download.htm

Code:
Revision History

2.1b
bullet	Added support for configuration auto saving [Registered version only]
bullet	Added feature for auto incrementing file name in order to create unique file name.
bullet	Both these feature together allows using YMPEG in batch job

KVCD Notch working like a champ. Both in MPEG-1 and MPEG-2
Also MIN and MAX bitrate seems to now be correctly maintained.
I haven't experienced anymore quantization faults, when using a very low MQuant value (1 or 2), so it seems that it's been fixed.
File size also seems to be right on the nose, so average bitrate is followed quite accurately.


-kwag
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  
10-10-2004, 10:05 AM
rds_correia rds_correia is offline
Free Member
 
Join Date: Apr 2003
Location: Chinese Democracy starts now!
Posts: 2,563
Thanks: 1
Thanked 0 Times in 0 Posts
THANKS for the info Karl
__________________
Rui
Reply With Quote
  #3  
10-12-2004, 04:00 PM
Zyphon Zyphon is offline
Free Member
 
Join Date: Oct 2003
Location: London, England (UK)
Posts: 1,035
Thanks: 0
Thanked 0 Times in 0 Posts
Yes thank you also karl for this info.
__________________
Regards.

Michael.
Reply With Quote
  #4  
10-12-2004, 05:08 PM
rds_correia rds_correia is offline
Free Member
 
Join Date: Apr 2003
Location: Chinese Democracy starts now!
Posts: 2,563
Thanks: 1
Thanked 0 Times in 0 Posts
Hi guys,
Well, my 1st tests with YMPEG are not very good
Maybe I'm doing something wrong with the encoding options but the quality is poor even choosing the KVCD matrix and setting the KVCD check box.
Also the encoding speed is very slow.
I'm sure I will be able to improve the quality because it's really very poor.
Otherwise the encoder would suck which is obviously unlikely since I've heard nice comments on it earlier.
I set min=150 avg=1700 max=8000.
Any comments from your tests guys?
Cheers
__________________
Rui
Reply With Quote
  #5  
10-12-2004, 07:41 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
Hi Rui,

The test I made was MIN 300, AVG 800, MAX 2,500.
The results are pretty good, although I agree that it's very slow, compared to ffmpeg/libavcodec based encoders.
But the produced mpeg-1 and mpeg-2 are fully compliant, without glitches or spikes, which is not the case with the other Codecs.
Are you using the latest version, 2.1c

-kwag
Reply With Quote
  #6  
10-17-2004, 04:25 PM
audioslave audioslave is offline
Free Member
 
Join Date: Mar 2003
Location: Sweden
Posts: 725
Thanks: 0
Thanked 0 Times in 0 Posts
@kwag

Hi!
Yes, I also tried out YMPEG (2.1c) and it must have been the blockiest movie I've ever seen ! What settings did you use to get a good result?
__________________
AudioSlave
Reply With Quote
  #7  
10-18-2004, 06:26 AM
Zyphon Zyphon is offline
Free Member
 
Join Date: Oct 2003
Location: London, England (UK)
Posts: 1,035
Thanks: 0
Thanked 0 Times in 0 Posts
Thanks for the info guys this is very interesting, I nearly bought this tool but now accoring to your findings I may hold off for a while until quality/speed can be improved.

Mind you having said that I since I bought my DVD-Burner I rarely do KVCD and mainly do KDVD so I guess i'll leave this program alone.
__________________
Regards.

Michael.
Reply With Quote
  #8  
10-19-2004, 09:36 AM
SILK SILK is offline
Free Member
 
Join Date: May 2004
Posts: 25
Thanks: 0
Thanked 0 Times in 0 Posts
To solve the blocky image in ympeg you must put min:300000 average(something like 2300000 or what you want) and maximum:9800000. I had the same problem but now it works.
Reply With Quote
  #9  
11-25-2004, 11:44 PM
yusuf yusuf is offline
Free Member
 
Join Date: Nov 2003
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via Yahoo to yusuf
Some of YMPEG default settings issues are resolved in latest version 2.4.

Regards,
Yusuf
Reply With Quote
  #10  
11-26-2004, 12:22 AM
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
Thanks Yusuf

-kwag
Reply With Quote
  #11  
11-29-2004, 02:28 PM
fabrice fabrice is offline
Free Member
 
Join Date: Mar 2003
Location: Madrid-Spain
Posts: 515
Thanks: 0
Thanked 0 Times in 0 Posts
Tested this version and blocky as hell (704x576 at 1312 kbps)!
could be because of kvcd matrix?

Salu2
Fabrice
Reply With Quote
  #12  
12-14-2004, 05:44 AM
yusuf yusuf is offline
Free Member
 
Join Date: Nov 2003
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via Yahoo to yusuf
IMO, 1312 kbps is definately low for 704x576 resolution (for most video content).

Anyway, Can you send your YMPEG settings file to support@ympeg.com
Reply With Quote
  #13  
12-14-2004, 03:27 PM
fabrice fabrice is offline
Free Member
 
Join Date: Mar 2003
Location: Madrid-Spain
Posts: 515
Thanks: 0
Thanked 0 Times in 0 Posts
Hi,

I know it's low, but I was comparing different encoder, and ympeg was the worst... With all others, the video was watchable, but with ympeg, it was impossible.
all the video is this kind of images:

with NuEnc, I got this kind of image, with the same bitrate:
.
I can send my setting to this email, but I think it could of general interest, don't you?

Salu2
Fabrice
Reply With Quote
  #14  
12-14-2004, 06:27 PM
danpos danpos is offline
Free Member
 
Join Date: May 2004
Location: Rio de Janeiro - Brasil
Posts: 538
Thanks: 0
Thanked 0 Times in 0 Posts
I do endorse fabrice´s statements relatively to NuEnc encoder. I´ve done some encodings with last one in cq mode in AVI (anime, captured from satellite) and the results were great! No blocky at all.

Cheers,
Reply With Quote
  #15  
12-15-2004, 02:43 AM
yusuf yusuf is offline
Free Member
 
Join Date: Nov 2003
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via Yahoo to yusuf
appreciate your comments and experiments. I could be wrong, but morever this looks like a settings problem. We will investigate and address this on priority. However, as you can understand it is very difficult to comment without knowing details. It will be a great help if you can send settings file and if possible, both clips(encoded by YMPEG and nuenc).

Thanks a lot in advance.
Reply With Quote
  #16  
12-16-2004, 12:58 AM
fabrice fabrice is offline
Free Member
 
Join Date: Mar 2003
Location: Madrid-Spain
Posts: 515
Thanks: 0
Thanked 0 Times in 0 Posts
Hi yusuf,

Quote:
Originally Posted by yusuf
I could be wrong, but morever this looks like a settings problem. We will investigate and address this on priority.
I'm sure it's a settings problem!
I just desinstalled/reinstalled ympeg to get default values, changes my video type (PAL-16/9), GOP (15) and avegrage/max bitrate.

Here are the parameters:




Quote:
Originally Posted by yusuf
However, as you can understand it is very difficult to comment without knowing details. It will be a great help if you can send settings file and if possible, both clips(encoded by YMPEG and nuenc).
Well: I have to say that I never let ympeg encode all the sample, because it's damn slow in my system (because of virtualdub stopping the thread very often, with "possible livelock"), so I'll let him go 'till the end, and send you both clips.

Salu2
Fabrice[/IMG]
Reply With Quote
  #17  
12-16-2004, 11:57 AM
yusuf yusuf is offline
Free Member
 
Join Date: Nov 2003
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
Send a message via Yahoo to yusuf
Oops, there is a problem in bitrate values you have entered. YMPEG takes all bitrate values in bps and not in kbps. For example, you MUST enter 1312000 and not 1312.

This could also be a reason for it being slow on your system as it keeps on trying to meet bitrate you specified.

I will look forward to your clips after you correct this.

Regards,
Yusuf
Reply With Quote
  #18  
12-17-2004, 12:52 AM
fabrice fabrice is offline
Free Member
 
Join Date: Mar 2003
Location: Madrid-Spain
Posts: 515
Thanks: 0
Thanked 0 Times in 0 Posts
Hi,

After changing the bitrates, ympeg is a lot better! Thanks Yusuf
The static/semi-static images are better than nuenc, and ympeg is not so slow than before.

There is only a problem, which is parameter related, I think: almost at the end of the movie, there is a action scene which is very blocky.
I think it's because the bitrate is almost linear (except at the beginning), but the Q not... (according to BV). So static scene have high bitrate, but action scene, not.
I'm actually playing with Reaction parameter, to see if it change something, but I think a CQ mode could be the key for low bitrate encoding...

Salu2
Fabrice
Reply With Quote
Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
YMPEG Release 2.8 yusuf Video Encoding and Conversion 2 09-11-2005 12:23 PM
How do I setup YMPEG...? audioslave Video Encoding and Conversion 4 02-28-2005 05:35 AM
YMPEG 2.4 released yusuf Video Encoding and Conversion 0 11-25-2004 11:48 PM
YMPEG: Is Ympeg linear? nicksteel Video Encoding and Conversion 3 12-10-2003 08:32 AM
Cannot install Ympeg nicksteel Video Encoding and Conversion 0 11-28-2003 06:45 AM

Thread Tools



 
All times are GMT -5. The time now is 02:35 AM  —  vBulletin © Jelsoft Enterprises Ltd