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Crunch

macrumors 6502a
Original poster
Jun 26, 2008
701
76
Crazy L.A.
Hello everyone!

I was blown away by how fast VLC converted an MKV file to MP4 for editing versus say Handbrake, which would have taken 30+ mins., even with a 4-core i7, and it would have run the fans up to max. for the entire conversion period.

I guess there was already an MP4 video in the MKV container that made it so fast? Is that a good way of putting it?

Thanks for helping me out.

Peace!
 
VLC converts to mp4 quickly as apparently vlc supports quicksync, so has hardware in the i7 doing the work. Is why a 2013 MacBook Pro did fcp x mp4 output way quicker then an nMP as well as could use the quicksync hardware built into the core i series processsors.
Later versions of handbrake definitely taking longer and OS X version not supporting quicksync as doing is software rather then hardware as focusing on quality as some people reckon that quicksync suffers on the converted quality output.
Dvd’s Used to rip through now take much longer to convert and a few threads over at handbrake forums about it. Noticeable slower even on my 2010 Mac Pro.
 
VLC converts to mp4 quickly as apparently vlc supports quicksync, so has hardware in the i7 doing the work. Is why a 2013 MacBook Pro did fcp x mp4 output way quicker then an nMP as well as could use the quicksync hardware built into the core i series processsors.
Later versions of handbrake definitely taking longer and OS X version not supporting quicksync as doing is software rather then hardware as focusing on quality as some people reckon that quicksync suffers on the converted quality output.
Dvd’s Used to rip through now take much longer to convert and a few threads over at handbrake forums about it. Noticeable slower even on my 2010 Mac Pro.

Thanks for the quick reply! Wow, so it's a QuickSync thing. I can't believe it makes that big a difference but apparently so.

Quick side question: Do different video players (VLC, QT, IINA, etc.) really give you different video quality using the same file?

Thanks!
 
Quality of the output is dependent upon how good the code is in the app doing the conversion so yes you will get different quality depending upon the app used.
I watch on 27” tv and can’t often tell between normal and HD channels. May be more noticeable on larger screens.

I don’t have any suitable hardware, 2009 mini, 2010 Mac Pro with quicksync so couldn’t say personally is true, just what have read on other threads and forums.
 
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