rich but not smooth (like the commercial) [frame skips]

kearlywi · Post by **kearlywi** » Mon Aug 25, 2003 9:30 pm

Well I've been video editing for a long time now, (I'm just now putting together my first AMV) and I just thought I'd ask a quick question. I cut out my clips (in VDUB) using HuffyUV lossless compression and the video is routed via avisynth. The d2v files I made out of DVD2AVI are 24 fps (actually a few thousandths of a frame less per second, so 23.936 or something) because I set one of the video options to "Forced Film." (Forced Film has had a much higher success ratio than using 30 fps, at least for me anyway).

From what I have been reading in the Video forum, this is a very popular method and is recommended by the best of em (I recommend it too). All that being said, I have noticed that these clips I have created, while looking GREAT, seem to skip a lot. It seems like I'm missing more than just every 6th frame. I checked and frame decimation is off. I will continue to experiment with AVIsynth and vdub attempting to slightly increase my clips smoothness. If anyone can suggest a filter that helps, etc. please do.

kearlywi · Post by **kearlywi** » Mon Aug 25, 2003 9:45 pm

one more thing. I'm only using one filter, the default deInterlace filter.

Zarxrax · Post by **Zarxrax** » Mon Aug 25, 2003 10:00 pm

You are doing it all wrong. Completely.
I would recommend going through the guides on the part about IVTC (inverse telecine).

turboneko · Post by **turboneko** » Tue Aug 26, 2003 10:06 am

Quick hints:

1) When you create your d2v files, do them with the Forced Film option off: you will get INTERLACED 29.97 fps footage

2) Use the decomb filter in avisynth to IVTC your footage and bring it to 23.976 fps

3) If you want to edit with premiere use the AssumeFPS(24) instruction as your last line of the avs script and modify your audio to fit the new framerate

4) Once done in premiere, bring back your footage to 23.976 fps and replace the edited audio with the original one

For all the technical details, follow teh guide

kearlywi · Post by **kearlywi** » Wed Aug 27, 2003 4:23 pm

all wrong?

How can it be all wrong when 90% of my files work GREAT, but for some reason 10% skip a couple of frames for no reason?

I hate when people tell me to read the guides, as if I never have. When I post here, its because I have a small problem that the guides didnt explain enough in detail or didnt cover, that simply requires a small adjustment. I've spent several hours reading the EADFAG (about 4 times over) and several hundreds of hours encoding in virtual dub. The truth is, sometimes you get a shitty DVD that just doesnt want to encode, and you have to make adjustments. So if my exact methods for any moment in time dont match up with your tried and true ones, don't freak out. There is usually more than one way to do something, especially with software in windows.

That being said I GREATLY appreciate your suggestions, the more ideas the better (thanks Turboneko

). Just don't jump all over me ok?

klinky · Post by **klinky** » Wed Aug 27, 2003 4:39 pm

Because you're doing it wrong. The Force-FILM options is not the proper way of doing things. This is most likely why you're getting your problem. You say it's a 'small' problem. But the problem is your method.

I've never seen your method actually reccomended. The reccomended method is DVD2AVI/AVISynth & Decomb.

What ErMaC says about Force-FILM:

"The Force FILM option in DVD2AVI is NOT a real Inverse Telecine process. All it's doing it reading the TFF/RFF flags in an MPEG2 stream and reconstructing frames based on that.
For example, if you encode something at 23.976fps in TMPGEnc and specify "3:2 pulldown on playback" in the interlacing options, DVD2AVI will report the file as 100% film. However, if in TMPGEnc you enable the filter "3:2 pulldown" - which actually telecines the fields and then encode the resulting video as "interlaced", DVD2AVI will report the stream is 100% NTSC. They both will look EXACTLY THE SAME when you watch them frame by frame - the difference is one is marked as being telecined and the other is not.
So in other words, always ALWAYS completely ignore what DVD2AVI says unless it's telling you the thing is 97%+ Film. If so use Force FILM. If not, use DeComb and see how it looks."

Basically, only use it if your DVDs are actually 97%+ FILM. In general using decomb is always going to give you better results.

kearlywi · Post by **kearlywi** » Wed Aug 27, 2003 5:49 pm

ok thanks. I started using forced film a long time ago (on a trigun dvd i believe) because ~30 fps was causing SERIOUS problems during encoding (very very sloppy). I made the switch then and never had to switch back (because i got excellent, dvd quality results). As with the small amount of frame skipping I encountered recently (and JUST recently) I discovered that sometimes a given file would skip some frames and at other times skip none at all. In the end, it turns out its my ultra crappy celeron processor is to blame, as when I closed down programs (like premiere) the file played much smoother.

That being said I have already spent 18 hours cookie cutting clips from an entire 25 episode anime series for my AMV doing it the "wrong" way, but I'll be sure to export from DVD2AVI with 30 fps and use the suggested method in the future, as it was what I was originally doing months ago (I kind of got attached to "forced film"

, but encoding is all about adjustments

.)

klinky · Post by **klinky** » Wed Aug 27, 2003 5:53 pm

Well if it works for you then just keep doing it. :/ Decomb will really slow down the process. Well sorta.

:/