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i don't know if this question has already been answered inside this thread, but i don't want to read the whole thing. does the prediction method also work for CQ_VBR?

Quote:

Originally Posted by muhali3

does the prediction method also work for CQ_VBR?

Yes it does.

-kwag

*A LITTLE OFFTOPIC*

I predict my file with CQMatic with a Max. Bitrate of 2500kbps first and then I choose the TEST Sample and put it into BitrateView and look how high the max bitrate is and I change the Value and predict again. If I can put the max bitrate lower again I do it and I think it's a very good way to find out the relation between a good CQ and Max. Bitrate.

That also depends on the CQ Value and the main problem is that by just taking a sample (no matter if continous one or sliced one) this won't include *all* peaks of your movie so this will be just a "guess" based on your "sampler" peaks.

Is there a way to do manual file size predicition using the new avisynth 2.5? Unless I'm missing something everything here is for the 2.X version of avisynth?

I like Kwags simple script at the top of this thread but how to make it work with avisynth 2.5?

nighthawk

Quote:

Originally Posted by nighthawk

Like prediction is made in base to calculations, no matter what avisynth version use you. The difference will be in the sample file in accord with the script that you use. Just take the prediction script, put together with your encoding script (in the right way, read the thread), run tmpgenc and get a sample. When the right sample lenght is reached, just comment the prediction line (#) in the script, and you'll get the complete movie.

SCRIPT

LoadPlugin("C:\encoding\MPEG2DEC2.dll")
LoadPlugin("C:\encoding\legalclip.dll")
LoadPlugin("C:\encoding\Dustv5.dll")
LoadPlugin("C:\encoding\BlockBuster.dll")
LoadPlugin("C:\encoding\FluxSmooth.dll")
LoadPlugin("C:\encoding\Sampler.dll")

SampleSize=0
CQ=0

movie="The Bourne Identity"
cds=2
cdtime=80
MinAudioBitrate=128
factor=0.98

Mpeg2Source("D:\THE_BOURNE_IDENTITY\VIDEO_TS\bourn e.d2v")
LegalClip()
BilinearResize(512,344,3,0,714,480)
temporalSmoother(2,2)
AddBorders(8,68,8,68)
LegalClip()

trim(0,round(framecount/10)) # 'mini'-prediction 1/10 prediction- comment this line when cq in range
prediction(movie, cds , cdtime, factor, SampleSize, CQ, MinAudioBitrate). Sampler(length=24)

#------------------------------#
# Prediction Function #
#------------------------------#

function Prediction (clip c, string "movie", int "cds", int "cdtime", float "factor", float "SampleSize", float "CQ", int "MinAudioBitrate")

{
movie = default(movie,"No_Title_Defined")
factor = default(factor,0.98)
cds = default(cds,0)
cdtime = default(cdtime,80)
SampleSize = default(SampleSize,0)
CQ = default(CQ,0)
MinAudioBitrate = default(MinAudioBitrate,128) # lowest audio bitrate wanted

MovieLength = framecount(c)/framerate(c)
FramesTotal = framecount(c)
FramesSample = framecount(Sampler(c,length=24))
CD_Size = (((cdtime*10)-5)*1024)*cds

MinAudio = (((((CD_Size-((MinAudioBitrate/8)*Movielength))*FramesSample)/FramesTotal)*factor))/1000
EncodedSample = (SampleSize==0)? false: true #--------------------------------------------------------------------
SampleSize = (SampleSize==0)? 1: SampleSize # if sample size =0 mb then no previous sample.
CQ = (CQ<=0)? 1 :CQ # set cq between 1-100
CQ = (CQ>100)?100 : CQ #---------------------------------------------------------------------
SampleSizeMessage=(EncodedSample==false)?"no sample encoded yet **********": "Sample Size (mb) : "
SampleCQMessage=(EncodedSample==false)?"no sample encoded yet **********":"Sample CQ : "
TryCQValueMessage=(EncodedSample==false)?"no sample encoded yet ******":"Try CQ value of : "

d=BlankClip(c,1,544,480).

\Subtitle(movie, 272,40, halo_color=$5500FF, text_color=$FFFFFF, font="Courier", size=27, align=5).

\Subtitle("Total Frames : " + String(FramesTotal), 80,60).
\Subtitle("Sample Frames : " + String(FramesSample), 80,80).
\Subtitle("Time (sec) : " + String(round(Movielength)), 80,100).
\Subtitle("Time (min) : " + String(round(Movielength/60)), 80,120).

\Subtitle(SampleSizeMessage+LeftStr(String(SampleS ize),5), 270,60,text_color=$FF0000).
\Subtitle(SampleCQMessage + LeftStr(String(CQ),4),270,80,text_color=$FF0000).
\Subtitle("Min. Audio Bitrate : "+ String(MinAudioBitrate)+" kbps",270,100,text_color=$FF0000).
\Subtitle("Desired Sample Size (mb) : " + LeftStr(String(MinAudio),5),270,120,text_color=$FF 0000).
\Subtitle(TryCQValueMessage + LeftStr(String((MinAudio*CQ)/SampleSize),4),270,140,text_color=$FF0000).

\Subtitle("Desired Sample Size (mb) for " + String(cds) + " CD(s):", 80,165, text_color=$FFFFFF).
\Subtitle("- audio at 96 kbps : " + LeftStr(String((((((CD_Size-((096/8)*Movielength))*FramesSample)/FramesTotal)*factor))/1000),5),80,185).
\Subtitle("- audio at 112 kbps : " + LeftStr(String((((((CD_Size-((112/8)*Movielength))*FramesSample)/FramesTotal)*factor))/1000),5),80,205).
\Subtitle("- audio at 128 kbps : " + LeftStr(String((((((CD_Size-((128/8)*Movielength))*FramesSample)/FramesTotal)*factor))/1000),5),80,225).
\Subtitle("- audio at 160 kbps : " + LeftStr(String((((((CD_Size-((160/8)*Movielength))*FramesSample)/FramesTotal)*factor))/1000),5),80,245).
\Subtitle("- audio at 192 kbps : " + LeftStr(String((((((CD_Size-((192/8)*Movielength))*FramesSample)/FramesTotal)*factor))/1000),5),80,265).
\Subtitle("- audio at 224 kbps : " + LeftStr(String((((((CD_Size-((224/8)*Movielength))*FramesSample)/FramesTotal)*factor))/1000),5),80,285).

\Subtitle("Average Bitrate (kbps) : "+ String(Round(((((CD_Size-((128/8)*Movielength)))/Movielength)*8)*1)), 80,328).

\Subtitle("Predicted Audio File Sizes (mb):", 80,373, text_color=$FFFFFF).
\Subtitle(" 96 kbps = " + String(Round(((( 96*1024)/8)*Movielength)/1048576)),80,395).
\Subtitle("112 kbps = " + String(Round((((112*1024)/8)*Movielength)/1048576)),80,416).
\Subtitle("128 kbps = " + String(Round((((128*1024)/8)*Movielength)/1048576)),80,437).
\Subtitle("160 kbps = " + String(Round((((160*1024)/8)*Movielength)/1048576)),270,395).
\Subtitle("192 kbps = " + String(Round((((192*1024)/8)*Movielength)/1048576)),270,416).
\Subtitle("224 kbps = " + String(Round((((224*1024)/8)*Movielength)/1048576)),270,437).

\BilinearResize(width(c), height(c))
return d+c+d
}

You must replace the text in red, with your own script.
Take care with the text in green.
You must comment (#) the line in blue for full encode.

where can I find athe sampler dll for avisynth ver 2.5?

Quote:

Originally Posted by nighthawk

where can I find athe sampler dll for avisynth ver 2.5?

http://wald.heim.at/redwood/511999//...ampler-2.5.dll
or
http://wald.heim.at/redwood/511999//...ampler-2.5.rar

Incredible, thanks for that .

:D :D

Thanks for the links!!!

Quote:

Originally Posted by nighthawk

:D :D

Thanks for the links!!!

Oh! Your welcome. But only for the links! Well, then I'll delete the previous post. :D :D :D

Do these plugins work with AviSynth 2.5?

LoadPlugin("C:\encoding\legalclip.dll")
LoadPlugin("C:\encoding\Dustv5.dll")
LoadPlugin("C:\encoding\FluxSmooth.dll")

Cos.. I think when I tried opening a AVS which used the functions (in these dlls), WMP displayed... it is not a valid Avisynth 2.5 function.

Legalclip is now built-in into avs2.5 and is called "Limiter".
DustV5 don't have any equivalent in 2.5 (and some are sad about that).
Fluxsmooth has a 2.5 version that you can load here :

http://www.avisynth.org/warpenterprises/

Note: as said in the hints in bottom of the message, you are not mandatory to use the provided script ! You can use your own script. So the lack of Dustv5 is not a problem.

Quote:

Originally Posted by Dialhot

Note: as said in the hints in bottom of the message, you are not mandatory to use the provided script ! You can use your own script. So the lack of Dustv5 is not a problem.

Yeah... I knew that. To be honest... I dont know what they are for... but just wanted to check them out! :) thanks for ur info though!

Re: Manual File Prediction: A Mini "How-To"

Quote:

Originally Posted by kwag

Step 1: Determine the Audio file size.
I usually select either 112Kbps for 120+ minute movies or 128Kbps for movies shorter than that. You'll see the audio size is automatically displayed in HeadAC3he. Make a note of the size.

Step 2: Determine the Video file size.
Suppose the audio in step 1 is 87MB, and our CD-R is 700MB 80 minutes. Remember that VCDs are written in what's called "Mode-2", so a 700MB data CD-R will actually fit ~800MB in VCD format. So we'll use an 80 minute CD-R for this example.
Now do this: 800 - 87 = 713. The ~800 is your VCD capacity. So you have ~713MB left for your video stream, and this will be the predicted file size for the video. Now apply the formula like this:

Predicted MPEG size = (( Total frames/MovieTimeInMinutes) / 24 ) * MPEG sample file size [/color]

Say your movie has 198,673 frames and is 138 minutes long. You would do this: 198673 / 138 / 24 = 59.98 and store the value 59.98 in your calculator's memory for a moment. Now do this: 713 / MemoryRecall(which is 59.98 ) = 11.88MB and that's what your sample size has to be. Now you encode with SansGrip "Sampler()" line at the end of your .avs. Here's what a basic .avs script looks like, with the file prediction line added at the end:

Code:

LoadPlugin("C:\encoding\MPEG2DEC.dll")

LoadPlugin("C:\encoding\fluxsmooth.dll")

LoadPlugin("C:\encoding\sampler.dll")

LoadPlugin("C:\encoding\legalclip.dll")

mpeg2source("K:\K19\VIDEO_TS\k19.d2v")

LegalClip()

BilinearResize(672,336,0,0,720,480)

FluxSmooth()

AddBorders(16,72,16,72)

LegalClip()

Sampler()

When the encoder finishes, which should take between 3 to 6 minutes depending on how fast your machine runs, take a look at the sample file size. This is what I do to zero in faster on the correct CQ value:

New_CQ_Value = WantedSize(11.88 in this case) / Encoded_Sample_Size * Current_CQ_Value

Say your sample comes out to 10.0MB, and you are encoding with a CQ value of 25. The new CQ value for the next run is: 11.88 / 10 * 25 = 29.7 So you change the CQ value in TMPEG to 29.7 and encode another sample. It usually takes 3 to 4 samples to hit your target this way.
When you get close to the wanted file size, say < 1%, just remove the line "Sampler()" from your .avs script and when you hit encode again, your complete movie will start to encode.

Hope this helps

-kwag

The som from the calculate ( 11.88 Mb ) is that the sample size for only the video stream or video + audio stream?

24 where is that number for?

And is there a simple calculate for audio + video stream sample together???

Nobody has a answer?

Quote:

Originally Posted by gio_vanni

Nobody has a answer?

steps one and two that you quoted have the answers for your questions:

1-the sample size for the video stream only.

2-where?...easy to understand but for me is hard to explain, please see the read-me that came with sampler!

3-your question here answer your first question ! 8O
no, cos don't need. you know the media and audio size before the prediction and the prediction will find the CQ to get the video size needed

just follow the examples posted in steps one and two!
:wink:

Quote:

Originally Posted by jorel

Quote:

Originally Posted by gio_vanni

Nobody has a answer?

Thanx

Re: Manual File Prediction: A Mini "How-To"

Quote:

Originally Posted by gio_vanni

24 where is that number for?

Frame rate (FPS).

-kwag

Hi Kwag

I was wondering if your prediction method works with CQ_VBR as well as CQ or is it a CQ only thing...