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07-27-2003, 09:15 AM
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trying now with the newest version of TMPG, but if i see that the cq is the same , i cancel.
with rc2 , i have the feeling that i had to set the cq value manually down .
f.ex, prediction is 74, i´d use then 72, or 71 sth like that, then it would be (perhaps) fitting all the way 
lets see, going on testing 
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Someday, 12:01 PM
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07-27-2003, 09:31 AM
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I've been using the latest tmpgenc but come to think of it before I was using 2.513 when I was getting accurate cqmatic predictions. Just noticed that kwag put a note that cqmatic is not accurate for avi files... I'm taking the same approach as you for testing, if I get the same CQ I know it's not accurate. Right now I'm going back to beta 4 and from the start of things, it's going down in CQ! It'd be interesting to prove whether some of the earlier betas were actually more accurate for avis or not.
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07-27-2003, 09:32 AM
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i´m not using avis, i have dvd as sources well....
now im testing rc3 again, with NEWEST tmpg version, and other settings , lets see later...
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07-27-2003, 09:39 AM
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cancelled test, cq pretty the same...
another test now, taking a cq of 77,31 , with that the video stream was 727mb , so a little big, will take now 74,31, lets see results later
bye
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07-27-2003, 10:44 AM
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Quote:
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Originally Posted by nicksteel
Quote:
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Originally Posted by kwag
Quote:
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Originally Posted by tigger
hi!
i´d like to know, those who got fine results with cqmatic, what do you take for MIN and MAX bitrates ?
thx
bye |
MIN = (0.57 * Average Bitrate)
MAX = 2,000Kbs
-kwag |
Same MIN/MAX for KDVD? |
MIN yes. MAX no. For KDVDs, leave the MAX as they are set.
-kwag
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07-27-2003, 01:00 PM
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i just don´t know further 
i can use EVERY setting for max and min bitrate, butt the vs is always gettin 20mb-30mb too big (
could any1 up the beta6? with that i had the most success
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07-27-2003, 01:38 PM
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JUst my opinion about the newest tmpge 2.520 ,can't say for sure (not enough tests) but so far even with tok the video seems to be too much.When using tmpge 2.58 if anything the video would be too small.I did a test with the newest cqmatic and got a cq of 81 and got a video size of about 798mb just video,and with tok the cq was almost identical but got a video size of about 776 just video.(the sources were avi's).I am going to run the same avs through tok with tmpge 2.58 and see what happens
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07-27-2003, 01:43 PM
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Hi tigger,
These is my setup, just in case there are some differences to what you are using:
TMPGEnc Plus version 2.520.54.163
AviSynth 2.52 Build July 17, 2003 [12:46:12]
All my tests we using the MA script, as is, and also without any scripts at all. Just reading the .d2v directly with TMPEG.
Here is a project file, which you may copy and load in TMPEG. Then change the relevant settings for your project, and save the project again:
Code:
object TMPEGEncodeJobFile
Job.MPEG.Text = 'CQMatic'
Job.MPEG.WizardCategoryName = ''
Job.MPEG.WizardSubFormatName = ''
Job.MPEG.WizardCaption = ''
Job.MPEG.WizardDescription = ''
Job.MPEG.WizardTargetMedia = MPEGConfig_TargetMediaType_Unknown
Job.MPEG.WizardAutoCalcVideoBitRate = False
Job.MPEG.WizardAutoChooseList.EnableVideoSize = False
Job.MPEG.WizardAutoChooseList.VideoSize = <>
Job.MPEG.WizardAutoChooseList.EnableVideoGOP = False
Job.MPEG.WizardAutoChooseList.VideoGOP = <>
Job.MPEG.OutputStreamType = MPEG_OutputStreamType_VideoOnly
Job.MPEG.OutputStreamType_ReadOnly = False
Job.MPEG.Video.StreamType = MPEGVideoEncoder_StreamType_MPEG1
Job.MPEG.Video.StreamType_ReadOnly = False
Job.MPEG.Video.Width = 528
Job.MPEG.Video.Width_ReadOnly = False
Job.MPEG.Video.Height = 480
Job.MPEG.Video.Height_ReadOnly = False
Job.MPEG.Video.YUVFormat = 1
Job.MPEG.Video.YUVFormat_ReadOnly = False
Job.MPEG.Video.DC_prec = 0
Job.MPEG.Video.DC_prec_ReadOnly = False
Job.MPEG.Video.VideoEncodeMode = MPEGVideoEncoder_VideoEncodeMode_Progressive_32Pulldown
Job.MPEG.Video.VideoEncodeMode_ReadOnly = False
Job.MPEG.Video.FrameRate = 1
Job.MPEG.Video.FrameRate_ReadOnly = False
Job.MPEG.Video.AspectRatio = 1
Job.MPEG.Video.AspectRatio_ReadOnly = False
Job.MPEG.Video.RateControlMode = MPEGVideoEncoder_RateControlMode_CQ
Job.MPEG.Video.RateControlMode_ReadOnly = False
Job.MPEG.Video.MaxBitRate = 0
Job.MPEG.Video.MaxBitRate_ReadOnly = False
Job.MPEG.Video.MinBitRate = 0
Job.MPEG.Video.MinBitRate_ReadOnly = False
Job.MPEG.Video.MinAvgBitRate = 0
Job.MPEG.Video.MinAvgBitRate_ReadOnly = False
Job.MPEG.Video.CBR_BitRate = 1150000
Job.MPEG.Video.VBR_MultipassVBRAlgorithm = MPEGVideoEncoder_MultipassVBRAlgorithm_MultipassCQ
Job.MPEG.Video.VBR_AvgBitRate = 1150000
Job.MPEG.Video.VBR_MaxBitRate = 3000000
Job.MPEG.Video.VBR_MinBitRate = 300000
Job.MPEG.Video.VBR_MaxPassCount = 2
Job.MPEG.Video.VBR_Quality_P = 0
Job.MPEG.Video.VBR_Quality_B = 20
Job.MPEG.Video.VBR_EnablePadding = False
Job.MPEG.Video.MVBR_MaxBitRate = 3000000
Job.MPEG.Video.MVBR_MinBitRate = 0
Job.MPEG.Video.MVBR_Quality_P = 0
Job.MPEG.Video.MVBR_Quality_B = 20
Job.MPEG.Video.MVBR_EnablePadding = False
Job.MPEG.Video.AVBR_Quality = 60
Job.MPEG.Video.AVBR_MaxBitRate = 2000000
Job.MPEG.Video.AVBR_MinBitRate = 502170
Job.MPEG.Video.AVBR_EnablePadding = True
Job.MPEG.Video.CQ_Quality = 70
Job.MPEG.Video.CQ_Quality_P = 0
Job.MPEG.Video.CQ_Quality_B = 20
Job.MPEG.Video.CQ_MaxBitRate = 2000000
Job.MPEG.Video.CQ_MinBitRate = 706800
Job.MPEG.Video.CQ_EnablePadding = True
Job.MPEG.Video.VBVBufferSize = 40960
Job.MPEG.Video.VBVBufferSize_ReadOnly = False
Job.MPEG.Video.GOP_SeqHeaderInterval = 1
Job.MPEG.Video.GOP_SeqHeaderInterval_ReadOnly = False
Job.MPEG.Video.GOP_I_FrameCount = 1
Job.MPEG.Video.GOP_I_FrameCount_ReadOnly = False
Job.MPEG.Video.GOP_P_FrameCount = 5823
Job.MPEG.Video.GOP_P_FrameCount_ReadOnly = False
Job.MPEG.Video.GOP_B_FrameCount = 2
Job.MPEG.Video.GOP_B_FrameCount_ReadOnly = False
Job.MPEG.Video.GOP_BitStreamForEdit = False
Job.MPEG.Video.GOP_BitStreamForEdit_ReadOnly = False
Job.MPEG.Video.GOP_MaxFrameCount = 24
Job.MPEG.Video.GOP_MaxFrameCount_ReadOnly = False
Job.MPEG.Video.QuantizeMatrix_Intra_ReadOnly = False
Job.MPEG.Video.QuantizeMatrix_NonIntra_ReadOnly = False
Job.MPEG.Video.Profile = 4
Job.MPEG.Video.Profile_ReadOnly = False
Job.MPEG.Video.Level = 8
Job.MPEG.Video.Level_ReadOnly = False
Job.MPEG.Video.VideoFormat = 2
Job.MPEG.Video.VideoFormat_ReadOnly = False
Job.MPEG.Video.DisplayWidth = 0
Job.MPEG.Video.DisplayWidth_ReadOnly = False
Job.MPEG.Video.DisplayHeight = 0
Job.MPEG.Video.DisplayHeight_ReadOnly = False
Job.MPEG.Video.MotionSearchSpeed = MPEGVideoEncoder_MotionSearchSpeed_MotionEstimate
Job.MPEG.Video.MotionSearch_AlwaysHalfPel = True
Job.MPEG.Video.UseFloatDCT = True
Job.MPEG.Video.QuantizeMode = False
Job.MPEG.Video.QuantizeModeVal_Intra = 35
Job.MPEG.Video.QuantizeModeVal_NonIntra = 35
Job.MPEG.Video.YUVBasicYCbCr = False
Job.MPEG.Video.QuantizeMatrix_Intra = {
08090C161A1B1D22090A0E1A1B1D22250C0E121B1D222526161A1B1F24252628
1A1B1D24272628301B1D22252628303A1D22252628303A4522252628303A454F}
Job.MPEG.Video.QuantizeMatrix_NonIntra = {
10121416181A1C1E121416181A1C1E201416181A1C1E202216181A1E20202224
181A1C20222224261A1C1E20222426281C1E202224262A2A1E20222426282A2C}
Job.MPEG.Audio.StreamType = MPEGAudioEncoder_StreamType_MPEG1_Layer2
Job.MPEG.Audio.StreamType_ReadOnly = False
Job.MPEG.Audio.SamplingFrequency = 44100
Job.MPEG.Audio.SamplingFrequency_ReadOnly = False
Job.MPEG.Audio.ChannelMode = 0
Job.MPEG.Audio.ChannelMode_ReadOnly = False
Job.MPEG.Audio.CantUseMono = False
Job.MPEG.Audio.BitRate = 128000
Job.MPEG.Audio.BitRate_ReadOnly = False
Job.MPEG.Audio.CalcCRC = False
Job.MPEG.Audio.CalcCRC_ReadOnly = False
Job.MPEG.Audio.OriginalFlag = False
Job.MPEG.Audio.OriginalFlag_ReadOnly = False
Job.MPEG.Audio.CopyrightFlag = False
Job.MPEG.Audio.CopyrightFlag_ReadOnly = False
Job.MPEG.Audio.PrivateFlag = False
Job.MPEG.Audio.PrivateFlag_ReadOnly = False
Job.MPEG.Audio.EmphasisType = 0
Job.MPEG.Audio.EmphasisType_ReadOnly = False
Job.MPEG.System.StreamType = MPEGSystemEncoder_StreamType_MPEG1
Job.MPEG.System.StreamType_ReadOnly = False
Job.MPEG.System.EnableCommentText = False
Job.MPEG.System.CommentText = ''
Job.SourceList = <
item
Video.SourceFileName = 'K:\your_avs_script.avs'
Video.SourceRange.Enabled = False
Video.SourceRange.StartTime = 0
Video.SourceRange.EndTime = -1
Video.SourceRange.SubRangeList = <>
Video.SourceRange.LastSourceFileName = 'K:\your_avs_script.avs'
Video.InterlaceImage = False
Video.TopFieldFirst = False
Video.AspectRatio = 1
Video.ImageArrange.ArrangeType = MPEGVideoConfig_ImageArrangeType_FullScreen
Video.ImageArrange.Width = 320
Video.ImageArrange.Height = 240
Video.ImageArrange.FillColor = 0
Video.EnableNoiseReduction = False
Video.NoiseReduction = 20
Video.NoiseReductionRange = 1
Video.NoiseReduction3D = 20
Video.NoiseReduction3DHiCQ = False
Video.EnableEdgePower = False
Video.EdgePowerX = 0
Video.EdgePowerY = 0
Video.EdgePowerField = False
Video.EnableDeinterlace = False
Video.Deinterlace = VideoFilter_Deinterlace_None
Video.DeinterlaceEx.Enabled = False
Video.DeinterlaceEx.FrameRate1 = 4
Video.DeinterlaceEx.FrameRate2 = 5
Video.DeinterlaceEx.AutoProcess = False
Video.DeinterlaceEx.AutoType = MPEGEncodeJob_Source_Video_DeinterlaceEx_AutoType_24fps_NonInterlace
Video.DeinterlaceEx.AutoDeinterlaceType = MPEGEncodeJob_Source_Video_DeinterlaceEx_Auto_Deinterlace_Force
Video.DeinterlaceEx.AutoForceDeinterlaceType = VideoFilter_Deinterlace_None
Video.DeinterlaceEx.AutoDeinterlaceThreshold = 600
Video.DeinterlaceEx.List = {0600000000000000}
Video.DeinterlaceEx.Cache = {}
Video.Clipping.Enabled = False
Video.Clipping.Left = 0
Video.Clipping.Right = 0
Video.Clipping.Top = 0
Video.Clipping.Bottom = 0
Video.Clipping.LeftMask = False
Video.Clipping.RightMask = False
Video.Clipping.TopMask = False
Video.Clipping.BottomMask = False
Video.EnableGhostReduction = False
Video.GhostReduction = <>
Video.ColorCorrection.Enabled = False
Video.ColorCorrection.Brightness = 0
Video.ColorCorrection.Contrast = 0
Video.ColorCorrection.Gamma = 0
Video.ColorCorrection.RedContrast = 0
Video.ColorCorrection.BlueContrast = 0
Video.ColorCorrection.EnableCustom = False
Video.ColorCorrection.Customs = <>
Video.EnableForceIPict = False
Video.ForceIPict = <>
Video.AutoForceIPict = True
Video.AutoForceIPict_NewGroupMode = False
Video.Enable32Pulldown = False
Video.NoConvertFrameRate = False
Audio.SourceFileName = ''
Audio.SourceRange.Enabled = False
Audio.SourceRange.StartTime = 0
Audio.SourceRange.EndTime = -0.958333408060705
Audio.SourceRange.SubRangeList = <>
Audio.SourceRange.LastSourceFileName = ''
Audio.Effect.Enabled = False
Audio.Effect.EnableVolume = False
Audio.Effect.Volume = 1
Audio.Effect.EnableFadeIn = False
Audio.Effect.FadeInTime = 500
Audio.Effect.EnableFadeOut = False
Audio.Effect.FadeOutTime = 500
end>
Job.OutputFileName = 'f:\temp\your_outputfile_goes_here.m1v'
Job.OutputFileType = MPEGEncodeJob_OutputFileType_MPEG
Job.OutputConfig_AVI.OutputFileName = ''
Job.OutputConfig_AVI.EnableVideo = False
Job.OutputConfig_AVI.VideoCodecHandler = 0
Job.OutputConfig_AVI.VideoKeyFrameRate = 0
Job.OutputConfig_AVI.VideoDataRate = 0
Job.OutputConfig_AVI.VideoQuality = 0
Job.OutputConfig_AVI.VideoEnableForceKeyFrame = False
Job.OutputConfig_AVI.VideoEnableForceCopyFrame = False
Job.OutputConfig_AVI.EnableAudio = False
Job.OutputConfig_AVI.InterleaveFrames = 0
Job.OutputConfig_AVI.VideoCodecConfig = {00000000}
Job.OutputConfig_AVI.AudioFormat = {00000000}
Job.OutputConfig_Wave.OutputFileName = ''
Job.OutputConfig_Wave.Format = {00000000}
Job.OutputConfig_Graphic.OutputType = MPEGEncodeJob_OutputGraphicConfig_OutputType_BMP
Job.OutputConfig_Graphic.OutputFileName = ''
Job.OutputConfig_Graphic.JPEGCompressionQuality = 80
end
So far, AVIs are predicted incorrectly. I posted a note at the top of this thread, related to that. All my tests have been with DVD sources.
Apparently, it has to do with the way prediction samples the source, so I believe it's a CODEC issue. Right now, I'm strictly working on .d2v (mpeg) sources, so I can tune precision to the max. Then I'll proceed to figure out why the strange behaviour with AVI sources.
-kwag
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07-28-2003, 03:13 AM
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Does anybody have any answers to my previous post?
Quote:
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Originally Posted by mistermickster
Do I need Avisynth to produce a 'script' to be able to use CQMatic? Or can I get by with just a bitrate calculator? (I do have MovieStacker).
I have read that TMPGEnc produces better results using CQ than with VBR, so am very interested in using some prediction method to determine the best CQ to use.
Thnx in advance. |
@kwag
Will there be a user guide out soon?
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07-28-2003, 03:21 AM
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Quote:
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Originally Posted by mistermickster
Does anybody have any answers to my previous post?
Quote:
|
Originally Posted by mistermickster
Do I need Avisynth to produce a 'script' to be able to use CQMatic? Or can I get by with just a bitrate calculator? (I do have MovieStacker).
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Hi mistermickster,
I didn't see your post 
You don't need avisynth. As a matter of fact, you can even use TMPEG directly on your source, but you won't gain the advantage of using avisynth's filters
You can use any bitrate calculator. Quote:
I have read that TMPGEnc produces better results using CQ than with VBR, so am very interested in using some prediction method to determine the best CQ to use.
Thnx in advance.
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You bet it does  Quote:
@kwag
Will there be a user guide out soon?
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There is one already 
Look on "Avalon's" signature.
-kwag
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07-28-2003, 03:22 AM
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Quote:
|
Originally Posted by mistermickster
Does anybody have any answers to my previous post?
Quote:
|
Originally Posted by mistermickster
Do I need Avisynth to produce a 'script' to be able to use CQMatic? Or can I get by with just a bitrate calculator? (I do have MovieStacker).
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Hi mistermickster,
I didn't see your post
You don't need avisynth. As a matter of fact, you can even use TMPEG directly on your source, but you won't gain the advantage of using avisynth's filters
You can use any bitrate calculator. Quote:
I have read that TMPGEnc produces better results using CQ than with VBR, so am very interested in using some prediction method to determine the best CQ to use.
Thnx in advance.
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You bet it does Quote:
@kwag
Will there be a user guide out soon?
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There is one already
Look on "Avalon's" signature, or here: http://www.kvcd.net/forum/viewtopic.php?t=5188
-kwag
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07-28-2003, 04:51 AM
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RC-4 is up
As usual, link and change log here:
http://www.kvcd.net/forum/viewtopic.php?t=5145
-kwag
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07-28-2003, 07:17 AM
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@Kwag,
As promised, here's my results of "Green Mile":
Movie .................... Green Mile
Length in Time ....... 191 min 55 sec ( 3 hours 11 min 55 sec)
Template ............... 352x240 ULBR KVCD
Average bitrate ...... 508 (MovieStacker)
Min ....................... (508 x 0.57) ~ 290 (Tmpgenc)
Max ...................... 1150 (Tmpgenc)
Audio size ............. 64 kbps (~90mb) (MovieStacker)
Video target size .... 709 mb (MovieStacker)
CD ....................... 1 80minute
CQMatic ................ version 1.0 RC-3
CQ ....................... 79 (CQMatic)
CQMatic log:
Quote:
http://www.kvcd.net
CQMatic Version 1.0 RC-3
Copyright Softronex Corporation, 2003.
All rights reserved.
Time: 16:49:58 Date: 07/27/2003
Ready!
Project: E:\DVD Backup\1 - DVD2KVCD\4 - Tmpgenc\NewScrip25.tpr
Creating: CQMatic.tpr
D:\Temp\NewScrip25.m1v
Execute.
Movie Time: 192
Average Bitrate: 508
Prediction Only mode
Executing Prediction Phase...
Using CQ of 60.00
Process started at 16:50:25
On 07/27/2003
Encoder started...
Process time: 17.93 minutes.
Encoder end.
File size difference = 1.334863
Last CQ = 60.000000
Current CQ = 70.045883
CQ difference = 10.045883
Using CQ of 70.05
Encoder started...
Process time: 18.02 minutes.
Encoder end.
File size difference = 1.200788
Last CQ = 70.045883
Current CQ = 75.068825
CQ difference = 5.022942
Using CQ of 75.07
Encoder started...
Process time: 18.02 minutes.
Encoder end.
File size difference = 1.037318
Last CQ = 75.068825
Current CQ = 77.870224
CQ difference = 2.801399
Using CQ of 77.87
Encoder started...
Process time: 17.98 minutes.
Encoder end.
File size difference = 1.023837
Last CQ = 77.870224
Current CQ = 79.726425
CQ difference = 1.856201
Using CQ of 79.73
Encoder started...
Process time: 18.03 minutes.
Encoder end.
File size difference = 0.930279
Last CQ = 79.726425
Current CQ = 78.798325
CQ difference = 0.928101
Using CQ of 78.80
Encoder started...
Process time: 18.02 minutes.
Encoder end.
File size difference = 1.005153
Last CQ = 78.798325
Current CQ = 79.204384
CQ difference = 0.406059
Using CQ of 79.20
Encoder started...
Process time: 17.98 minutes.
Encoder end.
File size difference = 0.969340
Last CQ = 79.204384
Current CQ = 79.001358
CQ difference = 0.203026
CQMatic complete!
Total minutes of process: 125.98
Process ended at 18:56:24
On 07/27/2003
|
Results:
Final Video filesize ........... 694mb
Final Audio filesize ........... 90mb
Total A/V ........................ 784mb
Comments:
This was really a test for filesize prediction accuracy which is only 16mb
under the prediction. That's very accurate The video took ~9 hours
to encode with credits included. It's looks great on a small screen and
only during action scenes is there light blocks and Gibbs effect is very
reduced. The only drawback was the lengthly time (2 hr 6 minutes)
it took for CQMatic to get the final CQ. I feel confident that CQMatic
will give me a good filesize prediction if the source is DVD. 
-bp
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07-28-2003, 07:45 AM
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Quote:
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Originally Posted by kwag
You don't need avisynth. As a matter of fact, you can even use TMPEG directly on your source, but you won't gain the advantage of using avisynth's filters |
But I'll need to install Avisynth to make use of the filters, right?
@kwag
Does CQMatic make it's prediction on the whole movie or just a short sample?
Would SVCD still give a better result over VCD when using CQ encoding?
Cheers
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07-28-2003, 07:48 AM
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Invalid Email / Banned / Spammer
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Hi Kwag,
CQmatic seems so easy to use
I did have a question in why is the min/max values so important in determining final CQ and file size accuracy? It could of been posted previously - though fell behind in reading the posts the last couple of days (couldn't get on KVCD.net -- what up with that Comcast  )
Anyway, using RC-1
Kanagaroo Jack
352x480 Cq=66
min=400
max=2500
file encode size was right on :P
Now I tried encoding the same movie at 480x480 (can't encode at full KVCD-3 resolution .... DVD player limited)
CQ=57.5
min=.57*average(=630)
max= 2000
file size +13M (too big)
CQ=57.5
min=300
max= 2500
file size -12M (too small)
CQ=57.5
min=400
max= 2500
file size -7M (too small - actually perfect once I burn it on 1 CDR)
It's almost like this min/max is the fine adjustment for a specific resolution. Why the variance in file size by changing the min/max setting?
Now to read more posts
Thanks
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07-28-2003, 01:45 PM
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Quote:
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Originally Posted by mistermickster
Quote:
|
Originally Posted by kwag
You don't need avisynth. As a matter of fact, you can even use TMPEG directly on your source, but you won't gain the advantage of using avisynth's filters |
But I'll need to install Avisynth to make use of the filters, right? |
If you want to use filters, yes you do. Quote:
@kwag
Does CQMatic make it's prediction on the whole movie or just a short sample?
|
It samples 6 frames every second 15 seconds, for every minute of the complete movie. Quote:
Would SVCD still give a better result over VCD when using CQ encoding?
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With TMPEG, CQ is the best encoding mode for resolutions above 352x240(28  .
For 352x resolutions, CQ_VBR provides better results.
In both cases, it applies to both MPEG-1 and MPEG-2
-kwag
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07-28-2003, 01:58 PM
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Quote:
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Originally Posted by black prince
ng action scenes is there light blocks and Gibbs effect is very
reduced. The only drawback was the lengthly time (2 hr 6 minutes)
it took for CQMatic to get the final CQ. I feel confident that CQMatic
will give me a good filesize prediction if the source is DVD.
-bp |
Hey thanks bp
The problem is that CQ between ~75 to 90 is not linear. That's why it took so long. Same applies for CQ between 1 to ~50.
So the best range will always be wneg CQ is between ~50 to ~75
If TMPEG's CQ was linear, it would only take one prediction encode
I'll see what happens when I add support for CCE and MCE
-kwag
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07-28-2003, 02:10 PM
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Location: Puerto Rico, USA
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Quote:
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Originally Posted by ChuckM
I did have a question in why is the min/max values so important in determining final CQ and file size accuracy? It could of been posted previously - though fell behind in reading the posts the last couple of days
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Hi Chuck,
It has to do with the dynamic range in TMPEG. If average bitrate is exactly centered between MIN and MAX, that's excelent for the encoder. In our case, we usually are encoding with a very low average, closer to MIN than to MAX. This throws off the dynamic range of the encoder Quote:
Anyway, using RC-1
Kanagaroo Jack
352x480 Cq=66
min=400
max=2500
file encode size was right on :P
Now I tried encoding the same movie at 480x480 (can't encode at full KVCD-3 resolution .... DVD player limited)
CQ=57.5
min=.57*average(=630)
max= 2000
file size +13M (too big)
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That's within range Quote:
CQ=57.5
min=300
max= 2500
file size -12M (too small)[/quote
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Not at all It's also within specs Quote:
CQ=57.5
min=400
max= 2500
file size -7M (too small - actually perfect once I burn it on 1 CDR)
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Perfect again Quote:
It's almost like this min/max is the fine adjustment for a specific resolution. Why the variance in file size by changing the min/max setting?
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If you target for 2 CDs, where your average will be far above than for a single, you'll probably get almost perfect accuracy
-kwag
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07-28-2003, 04:00 PM
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@Kwag,
Kwag wrote:
Quote:
Hey thanks bp
The problem is that CQ between ~75 to 90 is not linear. That's why it took so long. Same applies for CQ between 1 to ~50.
So the best range will always be wneg CQ is between ~50 to ~75
If TMPEG's CQ was linear, it would only take one prediction encode
I'll see what happens when I add support for CCE and MCE
-kwag
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Should I start Tmpgenc with CQ=55 or 50 to take advantage of this???
Can't wait for the CCE option. Finding the Q value determines filesize.
The lower the Q, the higher the quality and filesize. For MPEG-2, CCE has
the speed and is quality wise the same or better than Tmpgenc
-bp
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07-28-2003, 05:22 PM
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Location: Puerto Rico, USA
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Quote:
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Originally Posted by black prince
Should I start Tmpgenc with CQ=55 or 50 to take advantage of this???
Can't wait for the CCE option. Finding the Q value determines filesize.
The lower the Q, the higher the quality and filesize. For MPEG-2, CCE has
the speed and is quality wise the same or better than Tmpgenc
-bp |
Yep. For long movies, set your CQ to a low value. For short movies, set it to high values.
You can even just do this: Set CQ=0 for long movies, and set it to 100 for short movies. CQMatic will adjust the starting CQ (or CQ_VBR) for you automatically
-kwag
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