framerate conversion help please

[sclerato]

Hi all
i'll go stright to the problem....
i'm trying to convert, an avi file into dvd...
have a source ntsc video with enligh audio, and need to have at the end a pal video with italian audio (have external ac3 audio files in italian)

no problem resizing video to fit 720x576, but when i change framerate from 23,976 (have an ntsc source) to 25 (cause i need a pal video) i have every n frames, a quick freeze of the video...

it's normal or i falled something out ?
have used TMPGEnc to do all the things in one passage, resize and change framerate.

thanks for help!

[killingspree]

well somehow you have to add this one frame to the video. since a computer can't think (as we all know) the only way to do so, is to either duplicate one of the adjacent frames, or blend those two into an (intermediate) frame. both methods of course produce a slight jerkyness, which in my eyes you shouldn't notice while watching the movie. after all it's only present for 1/25th of a second or 40 milliseconds.

so i agree with you that, if it is indeed showing a short freez something must have gone wrong.

anyway, i'm not a tmpeg expert, so perhaps somebody knows of issues with the internal framerate conversion algorithm. have you tried using avisynth to do the job instead? never had problem achieving my goals with it, but i used it with CCE anyway, so perhaps that's the reason!

hth
steVe

[scharfis_brain]

either speedup the movie to 25fps, or live with the jerks

[sclerato]

finally i've solved the problem....

maybe someone got same trouble, so i write how i've made!
hope will be usefull ;)

remember that my source was a 16:9 608x336 23,976fps ntsc video, coded with xvid. I need to made a dvd with this.

so, first of all with virtual dub i've made a direct video stream copy, with the framerate change filter.

in the final video you dont really see the added frame, like killingspree was saying...good

second, with tmpgenc, convert the video in mpeg2 format with these settings:

stream type> ES (video Only) (i have separated ac3 audio file)

in settings window, video tab:

stram type> mpeg2 video
size> 720x576
Aspect ratio> choose what you want (i leaved 1:1)

in advanced tab:

source aspect ratio> 1:1 VGA
Video arrange method> center (custom size)
720x398

398 was calculated by me mantaining the same aspect ratio of the source file, some simple excel work!