Mike Dominic
December 1st, 2009, 07:51 PM
I am having some trouble putting a 30p project on DVD. Hopefully someone can help me.
As far as I know (and someone correct me if I am wrong), the average DVD player will take the 30p content on the disc and pass it along to the TV as a 60i stream. Then, the TV is supposed to recognize that the 60i stream originated as 30p, reconstruct the original frames from adjacent fields, and then play each frame twice to achieve its native 60p playback.
However, I have tested my 30p DVD on two different DVD players, and two different HDTVs, and the 60i stream coming from the DVD player is NOT being handled correctly. Instead of recreating the original progressive frames, the TV is performing its own 60i-to-60p conversion (i.e., using each field to create its own full frame), and this results in a flickering mess.
I have no idea where the problem lies. Do I need a special DVD player and/or TV to correctly play a 30p DVD? That would seem strange considering that all Hollywood DVDs are 24p and seem to work fine. I realize there are progressive scan DVD players, but it was my understanding that even normal DVD players should recognize and pass along a progressive flag to the TV, so that the TV can correctly reassemble the original frames.
Or is the problem in the DVD itself? I know for a fact the m2v files created by Compressor are indeed 30p. Could it be that DVDSP is not flagging the video as truly progressive? How can I be sure?
Please help!
Thanks,
Mike
Any help would be much appreciated.
As far as I know (and someone correct me if I am wrong), the average DVD player will take the 30p content on the disc and pass it along to the TV as a 60i stream. Then, the TV is supposed to recognize that the 60i stream originated as 30p, reconstruct the original frames from adjacent fields, and then play each frame twice to achieve its native 60p playback.
However, I have tested my 30p DVD on two different DVD players, and two different HDTVs, and the 60i stream coming from the DVD player is NOT being handled correctly. Instead of recreating the original progressive frames, the TV is performing its own 60i-to-60p conversion (i.e., using each field to create its own full frame), and this results in a flickering mess.
I have no idea where the problem lies. Do I need a special DVD player and/or TV to correctly play a 30p DVD? That would seem strange considering that all Hollywood DVDs are 24p and seem to work fine. I realize there are progressive scan DVD players, but it was my understanding that even normal DVD players should recognize and pass along a progressive flag to the TV, so that the TV can correctly reassemble the original frames.
Or is the problem in the DVD itself? I know for a fact the m2v files created by Compressor are indeed 30p. Could it be that DVDSP is not flagging the video as truly progressive? How can I be sure?
Please help!
Thanks,
Mike
Any help would be much appreciated.