Quality loss or not?

AdrieH

Newbie Joined: Jan 23, 2017 10:38 Messages: 18 Offline

Solved by

Oct 05, 2018 14:00

Hi all, here I am again with another qeustion.
I have captured a 90 minute videotape spanning several days of filming and want to edit that in PD17. To start with I'm thinking of splitting is in smaller sections that each cover a day and render those into separate mp4's.
But what happens when I import those new mp4's in a new project and render this project again as a whole? Do I lose quality because of the second processing?

This message was edited 1 time. Last update was at Oct 05. 2018 14:01

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BarryTheCrab

Senior Contributor Location: USA Joined: Nov 06, 2008 22:18 Messages: 6240 Offline

Oct 05, 2018 14:45

Unless you are using lossless codecs or Cyberlink SVRT,every render loses quality from compression and recompression. Lossy codecs include...all of them. Mpeg and AVC both start out lossy and get worse with each render.

This message was edited 2 times. Last update was at Oct 05. 2018 15:04

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optodata

Senior Contributor Location: California, USA Joined: Sep 16, 2011 16:04 Messages: 8630 Offline

Oct 05, 2018 14:51

You may just want to use the new pre-cut feature. That might hep you keep things manageable, and you won't ever have to "re-produce" any clips.

This message was edited 1 time. Last update was at Oct 05. 2018 14:52

AdrieH

Newbie Joined: Jan 23, 2017 10:38 Messages: 18 Offline

Oct 06, 2018 03:25

Quote You may just want to use the new pre-cut feature. That might hep you keep things manageable, and you won't ever have to "re-produce" any clips.

Thanks for the suggestion, but I want to use some of the clips in another program, so I guess the pre-cut feature is no option then. But for those parts that don't need to be used outside PD17 it is a good tip so I will definitely use this option!

This message was edited 1 time. Last update was at Oct 06. 2018 03:49

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BarryTheCrab

Senior Contributor Location: USA Joined: Nov 06, 2008 22:18 Messages: 6240 Offline

Oct 06, 2018 08:28

Quote Android...

Spammer

This message was edited 1 time. Last update was at Oct 06. 2018 13:55

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Nvidia GTX 960(4GB)/16GB DDR3/
Canon Vixia HV30/HF-M40/HF-M41/HF-G20/Olympus E-PL5.
Tape capture using 6 VCR, TBC-1000, Elite BVP4+, Sony D8 camcorder with TBC.
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optodata

Senior Contributor Location: California, USA Joined: Sep 16, 2011 16:04 Messages: 8630 Offline

Oct 06, 2018 13:21

Quote
Thanks for the suggestion, but I want to use some of the clips in another program, so I guess the pre-cut feature is no option then. But for those parts that don't need to be used outside PD17 it is a good tip so I will definitely use this option!

The best option to use clips in another program would be to produce using SVRT, if it's available for your clips. SVRT basically copies the frames from the source clip to the new one, with no changes.

If an SVRT profile isn't available for the format your source clips are in, you can use VirtualDub or other 3rd party tools to simply cut the source into clips of any length. Search the web for more options.

YouTube/optodata

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PowerDirector Moderator

Senior Contributor Location: New Taipei City, Taiwan Joined: Oct 18, 2016 00:25 Messages: 2104 Offline

Oct 07, 2018 06:21

Quote
Spammer

Thanks Barry,

Spammer now removed.

Cheers
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