Desincronized footage. at DVinfo.net

Miguel Lopez · October 26th, 2004, 04:02 PM

I have the same scene recorded with 2 different cameras. However, as time passes, the action is desincronized. Why? No frames were lost while capturing. is it possible the cheap camera records in non real time?

Miguel Lopez · October 26th, 2004, 05:11 PM

I came up with the solution. Because of the relativy theory, one camera goes closer to light speed and therefore, time passes slower!

:-DDD

Come on guys, any explanation?

David Bermejo · October 26th, 2004, 05:15 PM

Wow, interesting concept. I don't know, some older cameras might have different speeds after a whole lot of shooting. Maybe wear and tear. ?

Miguel Lopez · October 26th, 2004, 05:21 PM

One is DVX100e and the other one canon mv600.
After 12 minutes, the footage of the panasonic is 2 seconds ahead. Why!

Tim Borek · October 27th, 2004, 11:07 AM

You probably experienced a glitch or timecode problem in one of the tapes. This could have happened in camera while shooting, or during capture. Most likely, it was a bad tape or other camera glitch. If this happens again, have your camera professionally serviced.

I recently experienced a similar problem where after a certain point -- signalled by a loud audio glitch -- out-of-synch footage from two tracks became perfectly synchronized. Even though the timecode was solid, there was an obvious "skip" of some kind -- almost as if my assistant quickly pressed the Record/Pause button, but not long enough for the camera to stop shooting. I know that sounds weird, but that's what I saw, and I suspect that "shift" is responsible for my out-of-synch footage. After that audio glitch, the rest of the camera #2 footage (JVC GY-DV300U) matched up fine with my footage (Panasonic AG-DVC80).

I've synched my DVC80 footage plenty of times to GL-2s and another DVC80, and never had a problem. This was my first time synching with JVC footage. Digital is digital, so I don't think the brand of camera really matters. LIke I said, I suspect either a tape glitch or capture problem. If I really wanted to play detective, I could recapture the JVC footage and create a test project, but I don't have time for that. I will grill my assistant and see if he's had this problem with other projects using his GY-DV300U. After this, I'm wary of working with that camera again.

Good luck,

T.J.

Daniel Hollister · November 24th, 2004, 11:28 PM

is the DVX100 in 24p mode?

the canon only shoots in 60i (or perhaps 50i in this case) and if the DVX isn't set for the same, then the frame rates will obviously differ in postproduction.

October 26th, 2004, 04:02 PM	#1
Miguel Lopez Regular Crew Join Date: Mar 2003 Location: Madrid, Spain Posts: 187	Desincronized footage. I have the same scene recorded with 2 different cameras. However, as time passes, the action is desincronized. Why? No frames were lost while capturing. is it possible the cheap camera records in non real time?

October 26th, 2004, 05:15 PM	#3
David Bermejo Regular Crew Join Date: Sep 2004 Location: Orlando, Florida Posts: 36	Wow, interesting concept. I don't know, some older cameras might have different speeds after a whole lot of shooting. Maybe wear and tear. ? __________________ I love camera booms!! Never underestimate the power of a video camera!

October 27th, 2004, 11:07 AM	#5
Tim Borek Major Player Join Date: Dec 2003 Location: Westfield, IN Posts: 353	tape glitch or capture error You probably experienced a glitch or timecode problem in one of the tapes. This could have happened in camera while shooting, or during capture. Most likely, it was a bad tape or other camera glitch. If this happens again, have your camera professionally serviced. I recently experienced a similar problem where after a certain point -- signalled by a loud audio glitch -- out-of-synch footage from two tracks became perfectly synchronized. Even though the timecode was solid, there was an obvious "skip" of some kind -- almost as if my assistant quickly pressed the Record/Pause button, but not long enough for the camera to stop shooting. I know that sounds weird, but that's what I saw, and I suspect that "shift" is responsible for my out-of-synch footage. After that audio glitch, the rest of the camera #2 footage (JVC GY-DV300U) matched up fine with my footage (Panasonic AG-DVC80). I've synched my DVC80 footage plenty of times to GL-2s and another DVC80, and never had a problem. This was my first time synching with JVC footage. Digital is digital, so I don't think the brand of camera really matters. LIke I said, I suspect either a tape glitch or capture problem. If I really wanted to play detective, I could recapture the JVC footage and create a test project, but I don't have time for that. I will grill my assistant and see if he's had this problem with other projects using his GY-DV300U. After this, I'm wary of working with that camera again. Good luck, T.J.

October 26th, 2004, 05:11 PM	#2
Miguel Lopez Regular Crew Join Date: Mar 2003 Location: Madrid, Spain Posts: 187	I came up with the solution. Because of the relativy theory, one camera goes closer to light speed and therefore, time passes slower! :-DDD Come on guys, any explanation?

October 26th, 2004, 05:21 PM	#4
Miguel Lopez Regular Crew Join Date: Mar 2003 Location: Madrid, Spain Posts: 187	One is DVX100e and the other one canon mv600. After 12 minutes, the footage of the panasonic is 2 seconds ahead. Why!

November 24th, 2004, 11:28 PM	#6
Daniel Hollister Regular Crew Join Date: Oct 2003 Location: Hollywood, CA Posts: 128	is the DVX100 in 24p mode? the canon only shoots in 60i (or perhaps 50i in this case) and if the DVX isn't set for the same, then the frame rates will obviously differ in postproduction.