Playback Lag

[kshawkeye]

I just encoded a TV show (Friends) with Gordian Knot and when playing it back with Media Player Classic the video has a slight frame rate lag every onice in a while. I used Xvid to encode it. I encoded other TV shows without any problems, but I just cant get this one to work. I used DGIndex to make the d2v file (I think thats what it is, sorry if I am wrong). The show is NTSC (29.97) but I selected "Forced Film" to drop it down to 23.97 (for better quality) and I am not sure if that might be causing it. Any ideas of what might cause this playback lag would be a great help. Thanks!

[manono]

The show is NTSC (29.97) but I selected "Forced Film" to drop it down to 23.97 (for better quality)
You select 'Forced Film' only if it's been soft telecined (encoded as progressive 23.976fps with pulldown applied).

Can you describe what you mean by 'playback lag'? Do you mean the audio and video go out of synch sometimes? Do you mean the video playback speed seems to slow down and speed up? And a short 10 second sample of the source might help - a sample with steady movement that you upload somewhere for us so we can have a look.

[kshawkeye]

When watching the movie there is a slight frame by frame lag or slowdown, it apears that frames might be getting skiped. The audio is fine and does not slowdown or skip also. The best example I noticed, was when the cammera panned past some buildings and noticible frame rate changes could be seen, the builgings would "jump" across the screen. I will work on the sample, but that is the best I can describe it. Thanks a lot for the reply!

[setarip_old]

@kshawkeye

Hi!The show is NTSC (29.97) but I selected "Forced Film" to drop it down to 23.97 (for better quality) and I am not sure if that might be causing it.Perhaps too obvious a question but, does the video play properly if you don't convert from 29.970fps to 23.976fps?

[Inspector.Gadget]

You did it wrong. You ONLY use Force Film if the stream is SOFT TELECINED, and even then it generally only looks good over the duration of the movie at ~95% FILM and above. I think neuron2 might have explained it to you in the other thread. If the stream is HARD TELECINED, IVTC it in Avisynth. If the stream is interlaced, deinterlace it in Avisynth. If the stream is hybrid, use a hybrid IVTC or VFR method in Avisynth. DGIndex doesn't enter the picture unless your source is mostly Forced Film: otherwise, your D2V should always be created with "Honor Pulldown Flags".

[CWR03]

Inspector.Gadget is correct, assuming you encoded from DVD. The show was filmed, but "Force Film" is improper in this case.