Splitting large video files without rendering?

Bryan Worsley · December 12th, 2015, 11:03 PM

Thanks.

Just tried it with the SD mpeg2 file that I cut up previously with DGSplit and it rejoined the segments without any problems. Obviously you need to add the file extension (.mpg in this case) to the output file name.

I also ran the rejoined file through Smart Renderer 4 which is really strict on standards compliance and will re-encode any video frames (and audio segments) it sees fit to, around splice points particularly. The integral Smart Rendering Analyzer marked no frames or audio (AC3 in this case) for re-encoding, giving it a 'clean bill of health'.

It played perfectly well also, with audio in sync.

Excellent. Good find. I'll add it to my utilities collection

I had scanned the downloaded RAR file with MSSE and Malwarebytes, before and after unzipping, and it was clean. I always use 7Zip for opening ZIP/RAR files btw.

Jay Massengill · December 13th, 2015, 05:17 PM

Good to know! Thanks for checking the rejoined file thoroughly and for scanning the software too.

Bryan Worsley · December 13th, 2015, 11:30 PM

You're welcome.

Seth Bloombaum · December 21st, 2015, 09:48 AM

Standard DVD-R or +R are *not* an archive format!

The issue is that the aluminum layer (the silver-colored layer) will oxidize over time. 5 to 10 years is about it.

There is an archival DVD-R disk that works really well - up to several hundred years. It uses a gold reflective layer. Mitsui MAM-A. These disks cost significantly more than standard DVDs.

On the other hand, if 5-10 years provides what you want out of archive storage...

December 12th, 2015, 11:03 PM	#16
Bryan Worsley Major Player Join Date: Oct 2005 Location: Canada Posts: 439	Re: Splitting large video files without rendering? Thanks. Just tried it with the SD mpeg2 file that I cut up previously with DGSplit and it rejoined the segments without any problems. Obviously you need to add the file extension (.mpg in this case) to the output file name. I also ran the rejoined file through Smart Renderer 4 which is really strict on standards compliance and will re-encode any video frames (and audio segments) it sees fit to, around splice points particularly. The integral Smart Rendering Analyzer marked no frames or audio (AC3 in this case) for re-encoding, giving it a 'clean bill of health'. It played perfectly well also, with audio in sync. Excellent. Good find. I'll add it to my utilities collection I had scanned the downloaded RAR file with MSSE and Malwarebytes, before and after unzipping, and it was clean. I always use 7Zip for opening ZIP/RAR files btw.

December 13th, 2015, 05:17 PM	#17
Jay Massengill Trustee Join Date: Jul 2003 Location: Burlington Posts: 1,976	Re: Splitting large video files without rendering? Good to know! Thanks for checking the rejoined file thoroughly and for scanning the software too.

December 13th, 2015, 11:30 PM	#18
Bryan Worsley Major Player Join Date: Oct 2005 Location: Canada Posts: 439	Re: Splitting large video files without rendering? You're welcome.

December 21st, 2015, 09:48 AM	#19
Seth Bloombaum Inner Circle Join Date: Sep 2003 Location: Portland, Oregon Posts: 3,420	Re: Splitting large video files without rendering? Standard DVD-R or +R are not an archive format! The issue is that the aluminum layer (the silver-colored layer) will oxidize over time. 5 to 10 years is about it. There is an archival DVD-R disk that works really well - up to several hundred years. It uses a gold reflective layer. Mitsui MAM-A. These disks cost significantly more than standard DVDs. On the other hand, if 5-10 years provides what you want out of archive storage... __________________ 30 years of pro media production. Vegas user since 1.0. Webcaster since 1997. Freelancer since 2000. College instructor since 2001.