Troublesome divx compression

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Postby rafi.ikari » Tue Oct 22, 2002 5:02 pm

Zarxrax don't worry. The file went smooth and steady with me using higher bitrates. I think I have solved that one.
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Postby rafi.ikari » Tue Oct 22, 2002 5:11 pm

NEW PROBLEM! GAAAH
I must be the trouble man.

Now I can't open the dv file with avisynth. It says:

Avisynth Open failure:
DirectShowSource: I can't determine the framerate of the video; you must use the "fps" parameter
(D:\blablabla\avisynth.avs, line 1)

someone who knows the fps parameter, what should I write?

my video is 25 fps
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Postby rafi.ikari » Tue Oct 22, 2002 5:20 pm

Forget the last post. I have done a stupid thing. I happened to replace my school video with a new compressed one. Therefore I got this error message. So my friend have to sent it to me over icq again (which will take a long time).
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Postby ErMaC » Tue Oct 22, 2002 7:16 pm

Since you are deinterlacing true video material, I'd like to recommend an AVISynth-based deinterlacer called Tom's Motion-compensated Deinterlacer, or just TomsMoComp:

http://www.trbarry.com/TomsMoComp.zip

It's intended to be used on true video sources and uses motion compensation to better deinterlace them. Give it a shot and then use the deinterlaced footage together with your progressive CG stuff.
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Postby rafi.ikari » Wed Oct 23, 2002 11:18 am

Eh Ermac how do you install that one?

I've have tried some divx compressions with both nandub and virtualdub. I've come up with that my nandub 2pass divx files gets heavy. Not the ones made with virtualdub. The files made in virtualdub with the smart de-interlacer looks pretty good, but still not as good as the 2 pass divv files made in nandub. I do not understand why I should use the smart deinterlacer. You still have to choose between blending or interpolating. I thought it could handle both within the same video file. I says it here:

Smart Deinterlacing Filter wrote:This filter provides a smart, motion-based deinterlacing capability. In static picture areas, interlacing artifacts do not appear, so data from both fields is used to provide full detail. In moving areas, deinterlacing is performed.


How do you make it use blending or no deinterlacing in static pictures and interpolations in moving pictures? And what bitrate (and minimum) should I use for 2 pass divx 3.11 in nandub to get the video smooth (25 fps)?
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Postby rafi.ikari » Wed Oct 23, 2002 11:35 am

When I try to make I 2 pass with divx 5.0.2 (not pro) I get this message:

Could not open log file for reading'

Cannot start video compression:
The source image format is not acceptable.
(error code -2)

Is it because of the basic version or what?
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Postby rafi.ikari » Thu Oct 24, 2002 5:39 am

Thanks for all your time and help.
Please could someone who knows the 2pass divx problem above help me with that. I have the pro version now (taken away the spyware), so that's not the problem.

A tiny guide on how you do your divx 5 2 pass in virtualdub would be really helpfull, maybe I'm doing wrong. After selecting 2 pass in divx5's internal menu I use save as AVI in virtualdub (having not a 2pass option in virtualdub). Is that the wrong way to go?
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Postby klinky » Thu Oct 24, 2002 7:29 pm

Setup DivX5 to Two-pass, first pass.

File|Save As AVI...

type "firstpass"

let it process

Setup DivX5 to Two-pass, second pass

File|Save As AVI...

type "finalpass"

let it process.

finalpass.avi becomes a usable, firstpass.avi is just a file that contains info on how bitrate should be used, it's not a playable AVI file.

Your best bet is to actually save firstpass as firstpass.log, that way you won't overwrite it on accident.

You MUST make a file using first pass FIRST, before attempting the second pass. The error you get basically says this did not happen and it cannot find the log file.


~klinky
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Postby rafi.ikari » Sun Oct 27, 2002 6:47 am

Thanks Klinky, I manage to do a 2 pass with divx5. The 2 pass problem still exists though. Whenever I do a 2 pass the video gets heavy and lags.
This time I even set the bitrate to 10mbps. Can have anything to do with the mpeg4 tools in divx5's internal menu. I had those switch on. Maybe I should change some settings under the Advanced Parameter tab. What do you suggest?

I really want to use 2 pass, because the video looks very nice then.
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Postby klinky » Sun Oct 27, 2002 6:54 am

You shouldn't have to do anything. I've encoded all sorts of things and never had a playback problem that a re-install of a codec or a reboot couldn't fix :\


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