Recording broke into segments MXF packets at DVinfo.net

Stephen Hulbert · February 19th, 2012, 10:59 AM

Need help - recorded for 1 hour straight with my XF300 and when i downloaded files off my card i had 10 MXF packets making up that hour - why the segmentation? shouldn't i have just 1 packet? each packet was exactly 5:13 in length... thanks in advance - steve

Pavel Sedlak · February 19th, 2012, 12:14 PM

I work in Avid MediaComposer 5.5 and there is no problem with this segmentation. The media can be segmented, but a clip in timeline is not. I link all clips from the card with AMA (AvidMediaAccess), it's very simple (one click), then I can consolidate media to another hard disk or transcode into a different media codec. There is no problem with the segmentation.

I always copy the entire structure of the card when backing cards.

Jack Zhang · February 19th, 2012, 04:07 PM

The filesystem being recorded to the CF card has file size limits, hence why it splits into 10 files. If the camera used a proprietary file system, it would possibly defeat file size limits at the cost that the CF card will not work on a standard PC or any other device. This is not ideal so most of the manufacturers stuck to the universally accepted FAT file system, which has a 4GB file limit.

Ras Dashn · February 19th, 2012, 05:47 PM

Use the new Canon XF Utility V-1.2.1. Look instruction manual page 15.

February 19th, 2012, 10:59 AM	#1
Stephen Hulbert Tourist Join Date: Feb 2012 Location: New Cumberland, PA Posts: 1	Recording broke into segments MXF packets Need help - recorded for 1 hour straight with my XF300 and when i downloaded files off my card i had 10 MXF packets making up that hour - why the segmentation? shouldn't i have just 1 packet? each packet was exactly 5:13 in length... thanks in advance - steve

February 19th, 2012, 12:14 PM	#2
Pavel Sedlak Major Player Join Date: Feb 2007 Location: Prague Czech Republic Posts: 263	Re: Recording broke into segments MXF packets I work in Avid MediaComposer 5.5 and there is no problem with this segmentation. The media can be segmented, but a clip in timeline is not. I link all clips from the card with AMA (AvidMediaAccess), it's very simple (one click), then I can consolidate media to another hard disk or transcode into a different media codec. There is no problem with the segmentation. I always copy the entire structure of the card when backing cards.

February 19th, 2012, 04:07 PM	#3
Jack Zhang Inner Circle Join Date: May 2005 Location: Burnaby, BC, Canada Posts: 3,053	Re: Recording broke into segments MXF packets The filesystem being recorded to the CF card has file size limits, hence why it splits into 10 files. If the camera used a proprietary file system, it would possibly defeat file size limits at the cost that the CF card will not work on a standard PC or any other device. This is not ideal so most of the manufacturers stuck to the universally accepted FAT file system, which has a 4GB file limit.

February 19th, 2012, 05:47 PM	#4
Ras Dashn Regular Crew Join Date: Jun 2010 Location: UK Posts: 31	Re: Recording broke into segments MXF packets Use the new Canon XF Utility V-1.2.1. Look instruction manual page 15.