viewing 24p

xjerx wrote on 3/20/2005, 8:08 PM
I'm having a problem viewing footage converted to 24p in vegas 5.0. Video plays fine off a dvd on a tv...but when played through a media program off a computer for my church...the video is very choppy looking. The program is called mediashout. I'm guessing it might have somethign to do with the pulldown? Help please..

thanks
jeremiah

Comments

Spot|DSE wrote on 3/20/2005, 8:17 PM
It may be that your DVD software can't manage the pulldown, or it could potentially be that the bitrate is too high for the particular computer to manage. What's the bitrate? How fast is the 'puter?
xjerx wrote on 3/20/2005, 8:20 PM
Its not really a DVD program....just a media player. Average bitrate around 6...used DVDA MPEG2 preset.....computer should be fast enough... it has played plenty of my videos in the past..however...all at 29.97fps...not sure if that is the difference...

thanks
jeremiah
Spot|DSE wrote on 3/20/2005, 8:23 PM
I'd try a different software to playback the 24p, see if that happens. It would be wierd if the software can't playback 24p, but stranger things could happen.
The bitrate should definitely be slow enough....does the video card have a decoder on it that might interfere with the stream?
xjerx wrote on 3/20/2005, 8:33 PM
Not to sure on the specs of the computer...I think they even tried playing from the DVD player and software on the computer and it was still choppy. There are 5 videos total...and only three of them have this problem...and again...all work fine on tv...but computer is struggling...

thanks
Spot|DSE wrote on 3/20/2005, 8:52 PM
Possible you have bad media, bad header in the file, weird encode? If you're sure it's not the player, and sure it's likely not the bitrate, I'd be next looking at media, and then the encode integrity itself.
xjerx wrote on 3/20/2005, 8:56 PM
So should I prepare and burn the DVD again...or go all the way back and render them again in vegas?
Spot|DSE wrote on 3/20/2005, 9:04 PM
I'd try a different media, and try another burn. Takes time, but less time than rendering again in Vegas. If the new media doesn't work, then I'd prep/render again. I wish I had a better/more informed answer for you, but it's sorta hard figuring it out without seeing what's there, and even then it might be a challenge.
xjerx wrote on 3/20/2005, 9:17 PM
I will try all of the above....thanks for your help spot

jeremiah
farss wrote on 3/21/2005, 1:43 AM
Hre's another thought. You can handle 24p in two ways I think. You can add pulldown and end up with what is to all intents 29.97 standard NTSC and author a DVD as such. This will play out as vanilla NTSC.
Or you keep it pure 24 fps and author a DVD that is just 24 fps. Now it's upto the player as to how that gets output. If you have a capable player it'll playout pure 24fps but not too many display devices can cope with that.
Now I'm wondering if just maybe the two DVDs that play OK have pulldown added so all the player(s) can output is vanilla NTSC. The other 3 are genuine 24p and the player(s) are outputting 24p which the display device is having problems with.
Before anyone goes running off down the wrong track I'm not that much into NTSC and 24p, just throwing the little I've nutted out into the mix here.
Bob.
Spot|DSE wrote on 3/21/2005, 7:34 AM
That's a very good point, whether it's 2-3-3-2 or just 2-3 pulldown. Hadn't considered that, and it's quite possible that's the case.
xjerx wrote on 3/21/2005, 7:42 AM
Its 2-3....should i go with 2-3-3-2?
Spot|DSE wrote on 3/21/2005, 7:47 AM
If it's a player issue, yes. Give it a shot. I'd recommend rendering out a short sequence to save time, burn that to disk first as a test, unless you've got a lot of time.
FrigidNDEditing wrote on 3/21/2005, 8:13 AM
that could be painfully time consuming, Thank goodness it's Monday! (assuming they would be played on a sunday).

(one of the churches I usually do work for, never used to give me their projects until something like 2-3 days before they wanted to air it - that was a headache. Now they're at least gettng them to me in some basic way about a week out - I'll bet my bloodpressure has gone down a few points just from that ;-)

Dave
xjerx wrote on 3/21/2005, 8:53 AM
Actually, all this needs to be ready by Tuesday. My church puts on big productions...and it starts this week...however, the amazing tech guys only yesterday tested the videos I did, thus the reason i'm scrambling around now.
What makes it even harder is the fact that I am at school thirty minutes away and cant burn a quick test DVD and run up to the church and test it.
xjerx wrote on 3/21/2005, 3:01 PM
What would happen if I rendered the 24p files as 29.97? Or just change the settings in DVDA to 29.97 instead of 23.97?
xjerx wrote on 3/21/2005, 3:40 PM
THIS IS DRIVING ME CRAZY!!!!!!! This computer won't play any 24p videos at all. All the 29.97 videos...perfect. All the 23.97 videos....choppy. Even when playing through the DVD player and software on the computer! WHY!!!!

All play perfect on a DVD player and tv