I really don't understand what you are talking about. You have to enter the bitrate of the final MP2 you plan to use, not the bitrate of the source AC3 ! Can you give me a real example with the values you enter or want to enter ?

Normally custom size is not aimed for that. You are really missing something.

I am trying to encode to fit a final dvd with ac3 audio, not mp2 audio.

Trying to adjust video size to fit 4.70BGB DVD-5 less the size of my ac3 files (from DGIndex).

4.70GB DVD-5 4508876 GB
Total AC3 size: 540000 GB
----------
Video size: 3968876 GB

Trying to adjust custom media size to compensate for increased audio size, but when I enter reduced media size, video size does not reduce.

Possible mod would be to allow input of audio size and reduce video size to correspond if not using mp2 on dvd.

Then enter the bitrate of that AC3 audio ! You don't care if its AC3, MP2 or whatever else.

There is no need of the filesize. Don't you have its bitrate ?

In the instructions I never tell about MP2, I do not speak about format at all, and I even take the example for a 448 plus a 384 bps stream, that are common AC3 bitrates found on DVD !
Your problem is that the audio indicated by HCMatic does not match the filesize of your AC3 files, is it ?

Did you check if the length in minutes of the video are correct ?
Don't you have to put the fps to 29.970 to obtain correct values ?

My mistake, of course. I assumed mp2 would be smaller. Didn't knowze that 448 ac3 would be same size as 448 mp2.

Sizes are confusing.
1.mpg is 41:59 in WinDVD, 42:40 in HCMatic @23.976, 33:39 @29.970.
2.mpg is 40:59 in WinDVD, 39:23 in HCMatic @23.976, 32.51 @29.970.
3.mpg is 40:28 in WinDVD, 38:53 in HCMatic @23.976, 32.26 @29.970.
4.mpg is 40:33 in WinDVD, 40:38 in HCMatic @23.976, 32.30 @ 29.970.
All play in sync and encode/mux in sync.

The source (OTA HDTV) is 60fps, that I convert to 23.976. Should I use 29.970 in HCMatic?

LoadPlugin("C:\Program Files\AviSynth 2.5\plugins\DGDecode.dll")
Mpeg2Source("E:\24\1.d2v",idct=7)
selecteven()
Telecide(order=1, guide=1, gthresh=10, post=2, vthresh=50, dthresh=7, blend=false, show=false)
Decimate(cycle=5, mode=0, threshold=0, threshold2=3, quality=2, show=false)
LanczosResize(656,448,0,0,1280,720)
RemoveGrain(mode=1).TemporalSoften(2,3,3,8,2)
AddBorders(24,16,24,16)

Bitrate = bits per second. 448 kbit per second in AC3 or MP2 are still 448 kbit per second .

I edited my post above. Will the size inconsistanies cause a problem? It must result from the 60fps capture rate somehow.

No they are not. The tool can only find the number or frames and you have to tell him if there are 23.976 frames per second or 29.970. So if you have 1000 frames and you indicate 23.976 as fps, then the length will be 1000/23.976 seconds, and it will be 1000/29.970 seconds if you indicated 29.970.

Of course it is. But HCMAtic needs you to tell it at what FPS the source is played (and so the encoding will be done). If you are wrong the encoded video will be unsynch.

No, 23.976 is correct.

As I said : verify that the length in minutes indicated by HCMatic is the one of your source, else that means that you did not set the correct FPS.

As I can see on your snapshot, the source is 42min04sec, that is also what is shown in HCMatic. So 23.976 is correct.

Which size ? The one for the audio ?

FYI I use the bitrate calculation done by Karl for Calcumatic. If you used to use it (with CQMatic) before, then don't worry the maths are correct.

Ok, I understand now. Should verify fps with the information screen in Vdub. Sorry you're having to educate me one painful step at a time and appreciate your patience when I screw up.

No problemo

I am using Multidecimate() to remove duplicate frames from my Fraps captures (works fine). At present, am using TMPGenc to process instead of HCEnc due to audio muxing.

I would prefer to use HCEnc, but it doesn't do audio. Can I somehow extract the audio from the decimated file during avs processing and mux afterwards? I cannot extract directly from the source code, as frames are removed during processing.

Why the hell are you asking that on a "HCMatic howto" thread ?

You can extract the audio with tmpgenc insteed of encoding. Just go to "File -> Output to file -> Wav".

If you have a question : open a thread in whatever alse forum that can suit for it.

Was in haste. Should have been more careful in posting in correct thread.

You did answer my question, though.