Convert 23.972 to 25 fps w/out audio-video desynchronized

[Deansdale]

Hi,
i have a problem that i wish to solve. I have an avi movie that have 23,976 fps and I used TMPGenc to convert to a DVD PAL (25 fps), but i have a flick or pauses in all film every 2 secs. Some guys told me to convert first the frames on Virtualdub from 23,976 to 25 fps because TMPGEnc can't do both jobs at same time (convert framerate and encode to DVD(mp2-m2v)) without that error. But Virtualdub warn that change the framerate will causes video/audio desynchronization. Can anyone help me on that? Why the image flicks and sugest a better way to convert the framerate without a video/audio desynchronization. Or just suggest a better settings on TMPGEnc or on Virtualdub.
Thanks
Deansdale

[ormonde]

How fast is your CPU? This could be the cause for the flickering problem. Also, you could try the "Quick" method in Virtual Dub for synching the video and audio. Go to "Video" > "Framerate" and click the radio button "Change so video and audio durations match" after your have converted from 23,976 fps to 25 fps.

[megamachine]

I've had some success in converting to PAL by using ReStream and audio editors. It's a bit complicated, but the results were good, and no flicker. First, demux your audio and video. Then, load the video into ReStream and set the frame rate to 25fps. Once that's finished, find the exact length of the video stream. Load the audio stream into GoldWave and in Effects - Time Warp change the length of the audio to match the length of the video and save to a new file name. Then listen to the new audio stream, and see if the pitch changed noticeably. If so, then you can alter the pitch as needed with CoolEdit Pro (I don't recall if GoldWave does this, but I used CoolEditPro). Then remux the new audio with the restreamed video, and you have your PAL vid.

[Deansdale]

Thank you guys for the help.
Deansdale

[ormonde]

"Thank you guys for the help"

Glad (We) could be of help