Quantcast FFmpeg: Min/Max Bitrate in QuEnc? - digitalFAQ.com Forums [Archives]
  #1  
04-27-2004, 06:34 PM
Icarus3000 Icarus3000 is offline
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I just discovered QuEnc today, and all I can say is WOW!



Quick questions:

Is it possible to set the min/max bitrates? Or is it hard coded? If it is hard coded, does anyone know what they are set at internally?

Thanks!
Icarus
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  #2  
04-28-2004, 03:11 AM
Jellygoose Jellygoose is offline
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From what I have experienced with QuEnc 0.47 there is no way to set the min./max. bitrates manually.
i had bitrate peaks of ~11.000 kb/sec at an average bitrate of 2550kb/sec and the minimum was as low as 30kb/sec
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04-28-2004, 05:35 AM
Icarus3000 Icarus3000 is offline
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hmmm... I'm afraid that might not play in my player... will have to test it out...

What program do you use to see what the peak bitrate is in your .m1v file?

Thanks!
Icarus
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04-28-2004, 06:41 AM
rds_correia rds_correia is offline
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Hi Icarus ,
We usually use BitrateViewer that you can find here http://www.tecoltd.com/bitratev.htm.
Cheers
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04-28-2004, 07:07 AM
Jellygoose Jellygoose is offline
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@icarus:
I advise you to try out Mencoder. Ratecontrol now works for me everytime. Max. Bitrate is respected without any problems.
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04-28-2004, 08:13 AM
Icarus3000 Icarus3000 is offline
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No offense intended, but from what I have read, QuEnc sounds a lot easier to use. I believe if it included a manual Min/Max Bitrate setting it would be almost perfect!

Do you know how to contact the author to request this feature?

For some reason I can't access the Doom9 forums.
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  #7  
04-28-2004, 08:20 AM
vmesquita vmesquita is offline
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Unforutanelly I can't help you with QuEnc.
To use mencoder, you can try my GUI:

http://www.kvcd.net/forum/viewtopic.php?t=10300
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  #8  
04-28-2004, 10:24 AM
digitall.doc digitall.doc is offline
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I also advice you MencoderMe.
It's also easy to use.
And once you take it the smell, if you want to go further and tweak settings, you can in mencoder, not in QuEnc
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  #9  
04-28-2004, 12:00 PM
Icarus3000 Icarus3000 is offline
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hmm... I feel the peer pressure!

I guess I will try to learn how to use Mencoder/MencodeMe.

My reluctance comes from reading that I can't easily import avisynth files. Has this been resolved?

It seems a shame that there is not more communication between this board and the author of QuEnc, because at first look it seems extremely easy to use, and for my purposes the only thing missing is a Min/Max Bitrate setting.

Anyway, I'll give MencodeMe a try so I can at least do a fair comparison.

Thanks!
Icarus

EDIT: I downloade version 0.22 and it looks as though MencodeMe has the same limitations (if not more) than QuEnc. I don't see where I can specify min/max bitrate, nor how to adjust the GOP.
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04-28-2004, 12:38 PM
Jellygoose Jellygoose is offline
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In MencoderME, the min/max bitrates are already specified in the templates. Just take a look at the template files. For KDVD for example max bitrate is set to 9800kb/sec etc...
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  #11  
04-28-2004, 12:42 PM
vmesquita vmesquita is offline
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@Icarus3000
GOP is already set according to what you want to do (KDVD/KVCD, etc), but you can edit the templates and change if really need. The same holds true for Max bitrate. Unfortunatelly right now you can't set min in mencoder without ruining average bitrate (it's a bug).

For avisynth support, you need to use MakeAVIS from ffvfw to create a fake AVI from your AVS and then use this fake AVI in MencodeME. In this case, make sure you use the MakeAVIS template.
Get the a cut down version of ffvfw with makeavis only here:
http://cultact-server.novi.dk/kpo/av...S-20031113.exe
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  #12  
04-28-2004, 12:50 PM
digitall.doc digitall.doc is offline
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Quote:
Originally Posted by Icarus3000
hmm... I feel the peer pressure!
... what do you refer to

Quote:
My reluctance comes from reading that I can't easily import avisynth files. Has this been resolved?
Yep, and some time ago. Read how to use the makeAVIS way in the rds-correia sticky at top of this forum.

Quote:
It seems a shame that there is not more communication between this board and the author of QuEnc,...
I wouldn't say that. If you visit the forum where Nic usually posts you'll see that there are some posts from people here. If I remember well, it even was asked how could be implemented the automatic avs loading in mencoder... And Kwag was the first one in posting that QuEnc was out. And you'll see in this forum a comparison between QuEnc and Mencoder... What else? We went there, we post here about it...

Quote:
EDIT: I downloade version 0.22 and it looks as though MencodeMe has the same limitations (if not more) than QuEnc. I don't see where I can specify min/max bitrate, nor how to adjust the GOP.
Well, sure vmesquita will answer more properly. But as a begining I'll say that MencodeMe was design for easy using (don't want to say newbies). Max bitrate and GOP are set in templates, and easily adjustable. If vmesquita didn't put there the options to adjust each parameter, was to keep it easy. But, opposite to QuEnc, you have the chance to adjust this (and any other) settings. If you learn how to use mencoder, you'll be able to adjust it easily. If you want it the easy way, just make us know what parameters you want to change, and we can post here a command/settings to change them. By default, max rate is adjusted at 2500 for KVCD/KSVCD and at 8000 for KDVD. And GOP is set related to your settings. Easy.
BTW, I wouldn't mess with min rate, it makes rate control not work properly...
EDIT: two posts while writing!. I'm really slow posting
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  #13  
04-28-2004, 09:29 PM
Icarus3000 Icarus3000 is offline
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Ok... I would now like to try MencodeMe, but am having trouble with MakeAvis.

Can someone explain why I am getting the following error?

Quote:
GripCrop: Could not save target frame size as variables (ffvfw_avisynth_script, line 6)
This is the exact script I am using, which I can use with no problems in TMPGenc and QuEnc.

Quote:
import ("C:\Program Files\AvisynthSwitcher\versions\AviSynth 2.08\Plugins\convert60ito24p.avs")
mpeg2source("D:\My Documents\My Videos\movie.d2v")
converttoyuy2()
SmoothDeinterlace(tff=true, doublerate=true, blend=false)#SelectOdd() #Try with SelectOdd() also
convert60ito24p(2,0)
GripCrop(544,480,overscan=1,source_anamorphic=fals e,dest_anamorphic=false)
converttoyv12()
HybridFuPP(preset = "high", width = GripFit_resize_width, height = GripFit_resize_height)
GripBorders()
Thanks!
Icarus
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  #14  
04-28-2004, 10:07 PM
bigggt bigggt is offline
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HI Icarus3000

I will just give a guess until someone else comes along but maybe it does not support gripfit(could be and probably wrong) but i got this error first and switched to using BicubicResize and add borders and error was gone.
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