Telecide/Decimate shortens length of material?

Paul S · Messages: 231 Registration: 01.17.2003

I encoded a short (2:34) DV AVI sample with CCE that was frameserved with a script using the Telecide and Decimate filters. The result was one second shorter than the source and after muxing the audio sync was slightly off. I used pulldown.exe before muxing. To rule out CCE being the cause I loaded the same script into VirtualDub and saved to AVI and again the result was one second shorter. The material was captured from a TV show and is definately telecined. Here's the script. Loadplugin("D:\DVD2SVCD\Avisynth2 Plugins\InverseTelecine\decomb.dll") Loadplugin("D:\avisynth2\plugins\dustv5.dll") Loadplugin("D:\avisynth2\plugins\unfilter.dll") AVISource("G:\SVCD\DoIt\Input\Source.avi") ConvertToYUY2() Telecide(post=false) Decimate(cycle=5) BicubicResize(480,480) spacedust() unfilter(20,20)

94E36-325is · Messages: 852 Registration: 09.13.2002

Serve the AVI into VirtualDub without Telecide/Decimate. What are the reported frame rate and frame count (use File Information)? Then serve it in again with Telecide/Decimate. What are the numbers this time?

AgileM3 · Messages: 100 Registration: 09.05.2001

I'm using 1.5.2. I see "# of frames" and "Number of keyframes", which I assume is frame count. I don't see frame rate.

mmaigret · Messages: 769 Registration: 09.25.2001

And beware there is (IIRC) at least one version of DVD2AVI floating around out there that will say 30 fps material is really 30.00 fps instead of the more normal 29.97. - Tom

RagnarDanskjold · Messages: 76 Registration: 10.13.2003

Look again. It's right there on the first line. XXXfps. What are the numbers, please?

ElSupremo · Messages: 3,573 Registration: 11.03.2003

I guess fps is what you mean by frame rate. without Telecide/Decimate: frame rate: 29.970 frame count: 4621 audio frame: 4623 Telecide/Decimate: frame rate: 23.976 frame count: 3696 audio frame: 3697

Cruzmisl · Messages: 757 Registration: 01.02.2003

4621 / 29.97 = 154.1 secs 3696 / 23.976 = 154.1 secs Thus something subsequent to Telecide/Decimate is the cause. Look to the codec. (The numbers above are not exactly the same because your clip is not a multiple of the cycle size.) Please don't throw around accusations without cause. You can mollify me by adding a question mark to your subject line.

Theodore · Messages: 5,215 Registration: 05.30.2003

Oh, sorry for getting bristly! My bad. :o Let's try to solve this. What codec were you encoding with? Settings? I'll try to duplicate it if you can give me that information.

adonis_bimmer · Messages: 526 Registration: 09.29.2002

It's the Panasonic DV codec. Are you referring to codec settings? I didn't know there were any.:confused:

bmw buddy · Messages: 83 Registration: 09.26.2003

I just tried it with Huffyuv and the time came out right.