James Hooey
March 21st, 2008, 03:07 PM
OK I don't have a expalantion for this, but I wanted to ask if anyone has ever run into this before?
I shot a live concert of 3 bands with a XHA1 in 24f. Brought the files into vegas Pro 8 as native m2t files. The audio was recorded on a Olympus voice recorder with a stereo mic and synced to the video in post.
Note here - the Olympus did drift compared to the on camera audio which I synced back together in post by stretching the Olympus audio.
Rendered out as a cineform 1080p, 23.97fps avi. Then downrezzed it to MPEG2 DVD architect 23.97fps widescreen file. Audio rendered along with video (I know it's not the best way but it's what I did).
Brought this into DVD architect 4.5, added chapters and such and burned the disc.
The entire edit runs 2hours 2minutes. In all the steps above other than the initial syncing of the audio to video everything at each step remained in sync.
I had checked the DVD's on my set top player and all was good. Sync was complete throughout.
However....when I brought the disc to one of the bands we watched it in it's entirety front to back. The last bands performance had started to drift with the audio being almost a full second out from the video. This was easy to see as the drummer's snare drum actions were clearly not syncing up to the snare drum hits.
The only two things that I can think of that would contribute to this is that when I checked the discs I would not watch the disc front to back but rather watch a portion and fast forward as well as chapter skip to the next sections. So this is one area I need to check again to see if continuous playing was a factor.
The second thing was the quality of the band members DVD player. It was a horribly cheap little DVD player (brand name not checked at the time). When I say cheap I mean cheap....we actually watched it on a television no bigger than about 15" big with this cheap DVD player connected. I was double taking the video by the time the drift started to really get noticable, because it just wasn't making sense. It occurs to me that if this is the case than that poor band guy must have a hell of a time watching a movie as by the end of it dialog would look like a badly dubbed Kung Fu movie.
So does anyone have any thoughts or similar noticeable occurances of something like this?
If it's my technical steps that may be unsound (more info may be needed here as well to suss that out) then where would I have gone wrong?
I've never seen/noticed this before in any of my projects, included wedding videos I have shot. The only difference between previous projects and now is that I also stayed completely within a 24f workflow.
Help please!
James Hooey
I shot a live concert of 3 bands with a XHA1 in 24f. Brought the files into vegas Pro 8 as native m2t files. The audio was recorded on a Olympus voice recorder with a stereo mic and synced to the video in post.
Note here - the Olympus did drift compared to the on camera audio which I synced back together in post by stretching the Olympus audio.
Rendered out as a cineform 1080p, 23.97fps avi. Then downrezzed it to MPEG2 DVD architect 23.97fps widescreen file. Audio rendered along with video (I know it's not the best way but it's what I did).
Brought this into DVD architect 4.5, added chapters and such and burned the disc.
The entire edit runs 2hours 2minutes. In all the steps above other than the initial syncing of the audio to video everything at each step remained in sync.
I had checked the DVD's on my set top player and all was good. Sync was complete throughout.
However....when I brought the disc to one of the bands we watched it in it's entirety front to back. The last bands performance had started to drift with the audio being almost a full second out from the video. This was easy to see as the drummer's snare drum actions were clearly not syncing up to the snare drum hits.
The only two things that I can think of that would contribute to this is that when I checked the discs I would not watch the disc front to back but rather watch a portion and fast forward as well as chapter skip to the next sections. So this is one area I need to check again to see if continuous playing was a factor.
The second thing was the quality of the band members DVD player. It was a horribly cheap little DVD player (brand name not checked at the time). When I say cheap I mean cheap....we actually watched it on a television no bigger than about 15" big with this cheap DVD player connected. I was double taking the video by the time the drift started to really get noticable, because it just wasn't making sense. It occurs to me that if this is the case than that poor band guy must have a hell of a time watching a movie as by the end of it dialog would look like a badly dubbed Kung Fu movie.
So does anyone have any thoughts or similar noticeable occurances of something like this?
If it's my technical steps that may be unsound (more info may be needed here as well to suss that out) then where would I have gone wrong?
I've never seen/noticed this before in any of my projects, included wedding videos I have shot. The only difference between previous projects and now is that I also stayed completely within a 24f workflow.
Help please!
James Hooey