720x480 23.976p 4:3 Material to Blu-Ray

csc0709 wrote on 6/29/2009, 1:15 PM
The Blu-Ray specs only allow 720x480 standard definition video to be only at 29.97 (59.94) interlaced in the NTSC format to be put onto the disk. Thus, that is what DVD Achitect will accept. However, there are times when I have a video source that is 720x480 23.976 progressive that needs to be on a Blu-Ray disk. I have tried rendering with a pulldown applied, and DVD Architect will accept it, but upon playback the audio and video are out of synch. The Blu-Ray spec does allow 23.976 progressive native files in the 1920x1080 and the 720p formats, but those are all widescreen aspect ratios which would result in a window boxed playback on a 4:3 monitor if the 4:3 material is matted in that format. My question is how does one get a 23.976 progressive 4:3 720x480 file on Blu-Ray without having to interlace and still maintain the 4:3 aspect ratio?

Comments

MPM wrote on 7/1/2009, 3:07 PM
"I have tried rendering with a pulldown applied, and DVD Architect will accept it, but upon playback the audio and video are out of synch."

Where are they out of sync, in DVDA, your software player, your BD player etc?... AFAIK there is no difference to the player between SD video that's interlaced or has pulldown added -- that's why pulldown exists -- & it shouldn't effect overall audio sync, one way or another... however many frames you have per second, total duration should be the same, and scenes should still occur at the same times as before.

If your problem is in DVDA preview, see how the video is before &/or after -- DVDA adds some hardware & Windows requirements that can slow things down. If the problem exists before DVDA, fix your audio. If it happens only after DVDA render, try another player. If DVDA is encoding your audio, & that seems the problem, encode it outside DVDA & compare. IOW, track down where the sync problem is happening, & *then* you can take steps to fix it.
csc0709 wrote on 7/6/2009, 9:30 AM
I have a Sony BDP-S550 Blu-Ray player and it won't play back 23.976 material with 3:2 pulldown applied at 720x480 resolution burned to a blu-ray in BDMV mode. It freezes and hangs and the audio is out of synch with the picture. I presume it is because the blu-ray specs do not allow progressive material at the resolution of 720x480. So my question is, how do you put 4:3 material that is progressive onto blu-ray? You could matte it in a 1920x1080 frame and encode it, but if a blu-ray player is connected to a 4:3 television the result would be a window boxed image. Do you just have to interlace the material at 29.97 or what?