Question for Matt regarding .m2t files, clips, & dropped frames at DVinfo.net

Kit Hannah · January 29th, 2007, 04:55 AM

Matt,
After reading through some stuff, I'm starting to put things together here.

Here's the scenario. I have an hour long event to record in HDV. The FS-4 will split those scenes up into something like 7 scenes or so. But putting them on the timeline, there are gaps between the clips - it appears to be just a couple of frames.

My question is, are the gaps caused by the splitting of the GOP? If so, shouldn't this have been something thought about before supporting .m2t files / hdv? At the end of a clip, if it is in the middle of a GOP, what is supposed to happen? I believe that is why I am losing frames between clips, thus causing me to have to sync everything up 3 times every 10 minutes.

Unfortunately, this means I have to sync everything over 100 times because of my 7 hours of filming and 3 cameras. Not so happy about this. And if I had known this, I would have started and stopped the cameras between acts of the show rather than have gaps right in the middle of the performances. Or just recorded in DV mode rather than HDV, cause thats where it's going to end up anyways for the time being.

Michael Johnson · February 28th, 2007, 12:04 PM

I don't see a response to an earlier post on this critical issue:

Here's the scenario. I have an hour long event to record in HDV. The FS-4 will split those scenes up into something like 7 scenes or so. But putting them on the timeline, there are gaps between the clips - it appears to be just a couple of frames.

My question is, are the gaps caused by the splitting of the GOP? If so, shouldn't this have been something thought about before supporting .m2t files / hdv? At the end of a clip, if it is in the middle of a GOP, what is supposed to happen? I believe that is why I am losing frames between clips, thus causing me to have to sync everything up 3 times every 10 minutes.

Unfortunately, this means I have to sync everything over 100 times because of my 7 hours of filming and 3 cameras. Not so happy about this. And if I had known this, I would have started and stopped the cameras between acts of the show rather than have gaps right in the middle of the performances. Or just recorded in DV mode rather than HDV, cause thats where it's going to end up anyways for the time being.

Matt Vanecek · March 1st, 2007, 10:15 PM

These types of reports are pretty much why I have not yet plunked down the $300 for an HD upgrade to my FS-4....

Just FYI, Focus

Kit Hannah · March 2nd, 2007, 12:20 AM

Danny fye has posted a workaround for this - using DOS to copy all the files to one file from your Firestore, or it will work if you currently have the files on any hard drive. It combines all the files and you no longer have gaps between the scenes, nor does it lose any frames.

Here's the post:
http://www.dvinfo.net/conf/showthrea...ight=danny+fye

January 29th, 2007, 04:55 AM	#1
Kit Hannah Major Player Join Date: Jan 2007 Location: Fresno, California Posts: 528	Question for Matt regarding .m2t files, clips, & dropped frames Matt, After reading through some stuff, I'm starting to put things together here. Here's the scenario. I have an hour long event to record in HDV. The FS-4 will split those scenes up into something like 7 scenes or so. But putting them on the timeline, there are gaps between the clips - it appears to be just a couple of frames. My question is, are the gaps caused by the splitting of the GOP? If so, shouldn't this have been something thought about before supporting .m2t files / hdv? At the end of a clip, if it is in the middle of a GOP, what is supposed to happen? I believe that is why I am losing frames between clips, thus causing me to have to sync everything up 3 times every 10 minutes. Unfortunately, this means I have to sync everything over 100 times because of my 7 hours of filming and 3 cameras. Not so happy about this. And if I had known this, I would have started and stopped the cameras between acts of the show rather than have gaps right in the middle of the performances. Or just recorded in DV mode rather than HDV, cause thats where it's going to end up anyways for the time being.

February 28th, 2007, 12:04 PM	#2
Michael Johnson Tourist Join Date: Mar 2004 Location: Durham NC Posts: 1	Matt - .m2t files, clips, & dropped frames I don't see a response to an earlier post on this critical issue: Here's the scenario. I have an hour long event to record in HDV. The FS-4 will split those scenes up into something like 7 scenes or so. But putting them on the timeline, there are gaps between the clips - it appears to be just a couple of frames. My question is, are the gaps caused by the splitting of the GOP? If so, shouldn't this have been something thought about before supporting .m2t files / hdv? At the end of a clip, if it is in the middle of a GOP, what is supposed to happen? I believe that is why I am losing frames between clips, thus causing me to have to sync everything up 3 times every 10 minutes. Unfortunately, this means I have to sync everything over 100 times because of my 7 hours of filming and 3 cameras. Not so happy about this. And if I had known this, I would have started and stopped the cameras between acts of the show rather than have gaps right in the middle of the performances. Or just recorded in DV mode rather than HDV, cause thats where it's going to end up anyways for the time being.

March 1st, 2007, 10:15 PM	#3
Matt Vanecek Major Player Join Date: Jul 2005 Location: Denton, TX Posts: 334	These types of reports are pretty much why I have not yet plunked down the $300 for an HD upgrade to my FS-4.... Just FYI, Focus

March 2nd, 2007, 12:20 AM	#4
Kit Hannah Major Player Join Date: Jan 2007 Location: Fresno, California Posts: 528	Danny fye has posted a workaround for this - using DOS to copy all the files to one file from your Firestore, or it will work if you currently have the files on any hard drive. It combines all the files and you no longer have gaps between the scenes, nor does it lose any frames. Here's the post: http://www.dvinfo.net/conf/showthrea...ight=danny+fye