Corrupted frames in Cineform transocded clip. at DVinfo.net

Yang Wen · December 16th, 2009, 02:04 PM

I loaded up a Cineform clip today and the first 2 frames of the clip were corrupted. I freaked out, thinking perhaps my HMC150 had recorded these corruptions so I went back to the original MTS file and the frames were clean. Has anyone ever seen these types of corruption by Cineform?

http://img231.imageshack.us/img231/7...ormproblem.jpg

A problem I observed while transcoding about 640 AVCHD clips to Cineform -Twice in the process, Cineform would hang while transcoding a clip. I would walk away for a period of time and when I got back, I noticed that Cineform had stopped running and my RAID array had gone to sleep. HDLink's progress bar was stuck. I would kill the app and whatever progress had be done on that last clip was already saved to file and I could actually play the clip. Strange since I would have assumed the last clip would be unplayable. I'm not sure if the problem with this clip is related to the behavior I observed..

Yang Wen · December 16th, 2009, 02:10 PM

I should also add that this clip was the 2nd of a series of disjointed long clip produced by the HMC150.. The maximum file size is 4GB and the HMC automatically creates a new file after it reached 4GB...

That being said, I have other clips disjointed like the one above and Cineform converted those just fine.

Yang Wen · December 17th, 2009, 04:45 PM

Just found another "spanned" clip that has corruption on the 1st frame after transcoded to cineform...

David Newman · December 17th, 2009, 05:05 PM

I don't know why that is. Likely there is something incompatible with the Main Concept decoder or upstream demux we use. I gather these are large (source) files, maybe you could burn a sample to DVD-ROM (send to support,) so we could test why this is happening.

Yang Wen · December 18th, 2009, 12:35 PM

Yeah there must be some inherent incompatibility between Cineform and how the spanned clips are individually packaged. However, I've modified my workflow to joining the spanned clip first, then transcode...

Rudy Wilms · December 20th, 2009, 07:39 PM

I have the same problem since the thanksgiving beta and now I installed the latest build
and I still have the corrupted frames on serveral clips.I captured the same footage in adobe native and had no problems .All this is done in CS3

thanks Rudy

David Newman · December 20th, 2009, 07:49 PM

It is unlikely to have anything to do with the betas, as the HDV capture engine hasn't changed in a very long time. Contact support as they will help you solve the issue.

December 16th, 2009, 02:04 PM	#1
Yang Wen Major Player Join Date: May 2003 Location: Chicago, IL Posts: 991	Corrupted frames in Cineform transocded clip. I loaded up a Cineform clip today and the first 2 frames of the clip were corrupted. I freaked out, thinking perhaps my HMC150 had recorded these corruptions so I went back to the original MTS file and the frames were clean. Has anyone ever seen these types of corruption by Cineform? http://img231.imageshack.us/img231/7...ormproblem.jpg A problem I observed while transcoding about 640 AVCHD clips to Cineform -Twice in the process, Cineform would hang while transcoding a clip. I would walk away for a period of time and when I got back, I noticed that Cineform had stopped running and my RAID array had gone to sleep. HDLink's progress bar was stuck. I would kill the app and whatever progress had be done on that last clip was already saved to file and I could actually play the clip. Strange since I would have assumed the last clip would be unplayable. I'm not sure if the problem with this clip is related to the behavior I observed..

December 17th, 2009, 05:05 PM	#4
David Newman CTO, CineForm Inc. Join Date: Jul 2003 Location: Cardiff-by-the-Sea, California Posts: 8,095	I don't know why that is. Likely there is something incompatible with the Main Concept decoder or upstream demux we use. I gather these are large (source) files, maybe you could burn a sample to DVD-ROM (send to support,) so we could test why this is happening. __________________ David Newman -- web: www.gopro.com blog: cineform.blogspot.com -- twitter: twitter.com/David_Newman

December 20th, 2009, 07:39 PM	#6
Rudy Wilms Major Player Join Date: Apr 2009 Location: florida Posts: 342	Corrupted frames in Cineform transocded clip I have the same problem since the thanksgiving beta and now I installed the latest build and I still have the corrupted frames on serveral clips.I captured the same footage in adobe native and had no problems .All this is done in CS3 thanks Rudy

December 20th, 2009, 07:49 PM	#7
David Newman CTO, CineForm Inc. Join Date: Jul 2003 Location: Cardiff-by-the-Sea, California Posts: 8,095	It is unlikely to have anything to do with the betas, as the HDV capture engine hasn't changed in a very long time. Contact support as they will help you solve the issue. __________________ David Newman -- web: www.gopro.com blog: cineform.blogspot.com -- twitter: twitter.com/David_Newman

December 16th, 2009, 02:10 PM	#2
Yang Wen Major Player Join Date: May 2003 Location: Chicago, IL Posts: 991	I should also add that this clip was the 2nd of a series of disjointed long clip produced by the HMC150.. The maximum file size is 4GB and the HMC automatically creates a new file after it reached 4GB... That being said, I have other clips disjointed like the one above and Cineform converted those just fine.

December 17th, 2009, 04:45 PM	#3
Yang Wen Major Player Join Date: May 2003 Location: Chicago, IL Posts: 991	Just found another "spanned" clip that has corruption on the 1st frame after transcoded to cineform...

December 18th, 2009, 12:35 PM	#5
Yang Wen Major Player Join Date: May 2003 Location: Chicago, IL Posts: 991	Yeah there must be some inherent incompatibility between Cineform and how the spanned clips are individually packaged. However, I've modified my workflow to joining the spanned clip first, then transcode...