Editing DVCPro50 at DVinfo.net

Mike Rinkunas · October 6th, 2005, 08:21 AM

Hey everyone,

Got a project coming in that was shot on DVCPRO50 that needs to be edited, which happily forces me to upgrade my capabilities.

How does this format differ from DV/DVCAM/DVCPRO in the eyes of an NLE? I work in Premiere Pro 1.0, will it support DVCPRO50? When i run a capture app (scenlayzer), will it capture at the DVCPRO50 data rate?

Thanks
~Mike

Giroud Francois · October 6th, 2005, 10:21 AM

the only difference is this codec uses a less compressed video (50mb/sec instead 25mb/sec), so results are better.
obviously, size of files will increase by a factor of 2 and you will not be able to play or record to DV firewire.
it is nice even for DV when you want to make sure that post processing will not degrade too much the video.Mainconcept is providing a codec that works under premiere.

Mike Rinkunas · October 6th, 2005, 10:57 AM

Giroud,

I'm lost here: "and you will not be able to play or record to DV firewire."

so you can't do previews or send to tape?

~Mike

Giroud Francois · October 6th, 2005, 01:15 PM

As soon as you are working with a different codec than the one you get in your video equipement (DV, HDV or other) your video cannnot go back to where it comes from without reconverting.
You can capture DV from camera to PC and edit with any codec, but if you need to store it back to DV tape, it must be converted to DV.
Same for DVCPro50.
If you get a VCR able to read/write this format, there is no problem, but if you want to store the result to DV (or VHS using the DV to analog conversion of your VCR) you will need to convert back to DV codec.
For preview, as long as you stay on the PC, you can preview on the PC monitor.
Sometimes the codec is so slow, that even preview could be a problem (think about uncompressed HD resolution that can not be played smoothly even on a fast pentium)
the need to work under codecs with higher specs than the recorded one is found in intensive calculation on video (filters, color correction, keying) that can rapidly decrease the quality of the video, well under the quality expected for the same codec.
Example, in HDV, cineform is using a codec that far exceed the specs of HDV, to allow editing without any loss. but the result itself is not transferrable back to HDV without reconversion. Most of time this is managed transparently.

October 6th, 2005, 08:21 AM	#1
Mike Rinkunas Regular Crew Join Date: Dec 2002 Location: Allentown, PA Posts: 134	Editing DVCPro50 Hey everyone, Got a project coming in that was shot on DVCPRO50 that needs to be edited, which happily forces me to upgrade my capabilities. How does this format differ from DV/DVCAM/DVCPRO in the eyes of an NLE? I work in Premiere Pro 1.0, will it support DVCPRO50? When i run a capture app (scenlayzer), will it capture at the DVCPRO50 data rate? Thanks ~Mike

October 6th, 2005, 10:21 AM	#2
Giroud Francois Inner Circle Join Date: Feb 2004 Location: switzerland Posts: 2,133	the only difference is this codec uses a less compressed video (50mb/sec instead 25mb/sec), so results are better. obviously, size of files will increase by a factor of 2 and you will not be able to play or record to DV firewire. it is nice even for DV when you want to make sure that post processing will not degrade too much the video.Mainconcept is providing a codec that works under premiere.

October 6th, 2005, 10:57 AM	#3
Mike Rinkunas Regular Crew Join Date: Dec 2002 Location: Allentown, PA Posts: 134	Giroud, I'm lost here: "and you will not be able to play or record to DV firewire." so you can't do previews or send to tape? ~Mike

October 6th, 2005, 01:15 PM	#4
Giroud Francois Inner Circle Join Date: Feb 2004 Location: switzerland Posts: 2,133	As soon as you are working with a different codec than the one you get in your video equipement (DV, HDV or other) your video cannnot go back to where it comes from without reconverting. You can capture DV from camera to PC and edit with any codec, but if you need to store it back to DV tape, it must be converted to DV. Same for DVCPro50. If you get a VCR able to read/write this format, there is no problem, but if you want to store the result to DV (or VHS using the DV to analog conversion of your VCR) you will need to convert back to DV codec. For preview, as long as you stay on the PC, you can preview on the PC monitor. Sometimes the codec is so slow, that even preview could be a problem (think about uncompressed HD resolution that can not be played smoothly even on a fast pentium) the need to work under codecs with higher specs than the recorded one is found in intensive calculation on video (filters, color correction, keying) that can rapidly decrease the quality of the video, well under the quality expected for the same codec. Example, in HDV, cineform is using a codec that far exceed the specs of HDV, to allow editing without any loss. but the result itself is not transferrable back to HDV without reconversion. Most of time this is managed transparently.