3:2 pulldown on PC?

[fingers]

I usually rip DVD's and create SVCD's using 29.97 fps, but recently I've started doing them at 23.97, and creating SVCD Film type with 3:2 pulldown enabled on playback.

These work fine in my standalone DVD player, but when played back on the PC using Media Player, or the ATI file player the audio is out of sync with the video.

My assumption is that these two programs are playing back the video at 29.97 fps, because they don't recognize the 3:2 pulldown flag in the video stream, resulting with the audio, and video being out of sync.

Are my assumptions correct?

What windows software recognizes the 3:2 pulldown flag, and plays the video at the correct FPS?

Thanks

[adam]

What windows software recognizes the 3:2 pulldown flag, and plays the video at the correct FPS?

Thanks

None, basically because ~24 IS the correct FPS for PC playback of SVCDs. The 3:2 pulldown flag is only processed by a hardware player, because there would be no point for a software player to parse this.

The whole point of the 3:2 pulldown flag is to be able to encode at the film's naitve fps, yet have it play back at the NTSC required 29.97fps interlaced. Progressive scan playback devices, such as progressive scan tv's and pc monitors, can play 24fps progressive sources as is, so there is no need to telecine them to 29.97fps. So software DVD players, and progressive scan hardware dvd players ignore the 3:2 pulldown flag and export the film in its progressive state.

Whether you play your SVCD/DVD/VCD back at 23.976fps or 29.97fps should have no effect on audio sync. Basically, sync is just a product of time. As long as both audio and video start at the same time, and end at the same time, then logically they should always be in sync. When film is telecined from ~24 to ~30 the fps is increased by adding new frames every second, so even though there are more total frames the total playtime doesnt change because the # of seconds stays the same.

I'm not familiar with ATI player but my guess it is like media player, in that it is more of a media player than a SVCD/DVD player. These media players will decode mpeg1/2 using whatever 3rd party mpeg decoders you have installed on your system, at any given time. The quality of playback is only as good as the quality of these decoders.

I suggest you install either WinDVD or PowerDVD. These both make excellent SVCD players and I'm guessing that if you use these instead then your sync problems will disappear. Try out the trial versions and if you like them then buy them, they are pretty reasonable.

[Gazorgan]

WMP sucks, and ATI's record isn't too good either. Try Doom Player or one of the other good players. Also try PowerDVD or WinDVD, both work real well.