Thoughts on upsampling using intermediate codecs

Started by deletedAcc.0021, September 11, 2013, 02:16:58 PM

Previous topic - Next topic

0 Members and 1 Guest are viewing this topic.

deletedAcc.0021

Whats your view on upsampling the h.264 from the camera with a intermediate codec like gopro's cineform, prior to editing?

Been reading tons of articles both for and against using an intermediate codec to bring 4.2.0 footage into a 4.2.2 or 4.4.4 color space for better post processing results.

Any proven workflows?  Your tests?

zuzukasuma

if 4.2.0 to 4.4.4 were possible, arri workers had to shut down the facility. from what I know and experienced, its impossible to recover information lost with compression, you can always interpolate it but no luck, here is the thread for upsampling http://www.magiclantern.fm/forum/index.php?topic=8116.0
in a complicated relationship with eos m.

deletedAcc.0021

Quote from: zuzukasuma on September 11, 2013, 02:30:26 PM
if 4.2.0 to 4.4.4 were possible, arri workers had to shut down the facility. from what I know and experienced, its impossible to recover information lost with compression, you can always interpolate it but no luck, here is the thread for upsampling http://www.magiclantern.fm/forum/index.php?topic=8116.0

This is what I'm referring to ...>

Here is a post I just found on Vimeo's ML group.  The post title is a bit deceiving, but read further down, it gets into upsampling, and some interesting post by Mark Randall, Yellow and Tom Majerski.


http://vimeo.com/groups/magiclantern/forum/topic:253056

zuzukasuma

Quote from: dslrrookie on September 11, 2013, 02:59:10 PM

This is what I'm referring to ...>

Here is a post I just found on Vimeo's ML group.  The post title is a bit deceiving, but read further down, it gets into upsampling, and some interesting post by Mark Randall, Yellow and Tom Majerski.


http://vimeo.com/groups/magiclantern/forum/topic:253056

I strongly suggest you to read "yellow"s post again, just the 1st paragraph. this video describes it better
in a complicated relationship with eos m.

deletedAcc.0021

Interesting ...

So, I assume that using an intermediate codec is not beneficial in regards to h.264 , correct?

thanks for your post

zuzukasuma

Quote from: dslrrookie on September 11, 2013, 03:57:44 PM
Interesting ...

So, I assume that using an intermediate codec is not beneficial in regards to h.264 , correct?

thanks for your post

np, you just increase sharpness or decrease chroma noise but not the bit depth.
in a complicated relationship with eos m.