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Power Tools Video Denoise - Sound and Picture Synchronization
Chproto [Avatar]
Newbie Joined: Jun 15, 2013 15:35 Messages: 6 Offline
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Dear Friends,

With the new version of Power Director 14, when I apply the video denoise version in the Power tools, if the film has a long duration (more than 2-3 hours) the picture with sound are not synchronise in the new produced film.

This phenomenon is more intensive and the time diferrence could be more than 2 seconds when the raw material is HD.

I am very disapointed for this because I am not able to predict this disorder.



Yours

Christodoulos Protopapas
Jirka.Bolech
Senior Member Location: Liberec, Czech Republic Joined: Aug 16, 2014 06:03 Messages: 158 Offline
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Hi Christodoulos,

Have you tried producing the video? I have experienced shift between video and audio in preview under various, not extremely complex, conditions (not exactly using denoise, which, by the way, is under Fix/Enhance, not Power Tools) that didn't take place in the renderred file. I still consider it a serious inconvenince.

Regards…

Jirka
BarryTheCrab
Senior Contributor Location: USA Joined: Nov 06, 2008 22:18 Messages: 6240 Offline
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It may be a good work-flow to divide the video into 2 or 3 separate projects, render, then combine the rendered videos. Of course if you START with distinct projects you will have to keep notes on any alterations, fixes, lighting, colors, so the appearance of the videos is the same. This should mitigate any A/V sync issues, and is generally good practice.

This message was edited 1 time. Last update was at May 01. 2016 16:55

HP Envy Phoenix/4thGen i7-4770(4@3.4GHz~turbo>3.9)
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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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Anonymous [Avatar]
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Hello, Chproto!

What has already been said by Barry and Jirka, I endorse those comments. Barry's idea of breaking the project into smaller projects, much easier to handle! Jirka's suggestion of producing(rendering) the video might straighten out the audio/video mismatch. but what has me puzzled is, assuming you're shooting with a modern digital videocamera that produces AVCHD or MP4 video files, which, by their nature, are high definition, why would you want to touch them up with Video Denoise? By their own nature, AVCHD and MP4 videos are "pristine", clear, sharp and well-defined! They need no touching up at all! If the image is dark, you might want to brighten it a bit, but you use the brightness setting in Fix/Enhane for that purpose.

Video Denoise comes into its own when capturing old VHS, Beta, Video-8 or Hi-8 cameera tape content. When captured the image quality might appear a bit grainy, Video Denoise cleans up that graininess beautifully, add a bit of tweaking of the contrast and brightness, plus, if you've a mind to do it, convert the 4:3 aspect ratio to 16:9 using CLPV and you can, jokingly, lie to your friends by saying you shot the clips digitally! Ha-ha. They'll never know the difference or the truth, but you will. It'll be your little secret! But for content already shot digitally, Video Denoise is not necessary!

Cheers!

Neil.
BarryTheCrab
Senior Contributor Location: USA Joined: Nov 06, 2008 22:18 Messages: 6240 Offline
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Digital cameras come in different qualities, as do their capture settings, and sometimes dark or oddly lit places can cause problems. I think the owner of the video footage should be the judge on whether Denoise or other "fixes" are necessary. I mean, really Neil, did you see the video? HP Envy Phoenix/4thGen i7-4770(4@3.4GHz~turbo>3.9)
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.
https://www.facebook.com/BarryAFTT
Anonymous [Avatar]
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Quote: Digital cameras come in different qualities, as do their capture settings, and sometimes dark or oddly lit places can cause problems. I think the owner of the video footage should be the judge on whether Denoise or other "fixes" are necessary. I mean, really Neil, did you see the video?


Barry,

put it this way, you don't have to hold your hand over a naked flame to know that fire burns! So no, I didn't see the video, but I was assuming that Chproto may well have been using one of the latter generations of cameras which shoot in either AVCHD or MP4 file types. When viewed directly, before any attempt at editing is made, these "clips" come up so sharp, you could cut your finger on them!

I did, however, cover one possibility that may require a minor touch-up in Fix/Enhance, that of dark shots where a tweak of the brightness might help. But I stand by what I said about Video Denoise, it really comes into its own when reviving old analogue tape content, it really helps in "cleaning up" that old stuff!

Neil.
BarryTheCrab
Senior Contributor Location: USA Joined: Nov 06, 2008 22:18 Messages: 6240 Offline
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Neil, with all due respect, you don't have a sample shot, you've not seen the clips in question, and your input on this thread is veering off A/V sync, the original topic, as is usual when you chime in. I'm also getting weary of you stating your opinions as Gospel in video editing. HP Envy Phoenix/4thGen i7-4770(4@3.4GHz~turbo>3.9)
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.
https://www.facebook.com/BarryAFTT
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