dethis2

Joined on Oct 3, 2011

Comments

Total: 3, showing: 1 – 3
In reply to:

The Squire: Doesnt seem to specify a minimum bit rate?

You can have 10bit but at the same bit rate as a 'normal' 8bit video file, but you'll loose most of the benefit.

See the criticism of the new Sony FS5's 1080p 10bit mode - The normal bit rate cant cope with 10bit depth, resulting in compression artifacts.

UHD, 10bit, 4:2:2 at 200Mbps would be a good step up from the codec we see in most of the enthusiast cameras today.

Encoding at 10bit in fact saves bandwidth for the same quality ..

http://x264.nl/x264/10bit_02-ateme-why_does_10bit_save_bandwidth.pdf

http://ateme.com/en/technology/white-papers/Using-10-bit-AVC-H-264-Encoding

Link | Posted on Jan 7, 2016 at 04:04 UTC
In reply to:

dethis2: RAW conversion with Rawtherapee ..
Looks like LX100's sensor is very much alike GH4's regarding color filters and raw white level.
You need to add the following paragraph in RT's camconst.json file

{ // Quality X, preliminary support
"make_model": "Panasonic DMC-LX100",
"dcraw_matrix": [ 7122,-2108,-512,-3155,11201,2231,-541,1423,5045 ],
"ranges": {
"black": 16, // 16 is BL offstet calculated from exif data.
"white": [
{ "iso": 100, "levels": 2700 },
{ "iso": 125, "levels": 3100 }, // gh4 data
{ "iso": [ 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1250, 1600, 2000, 2500, 3200, 4000, 5000, 6400, 12800, 25600 ], "levels": 4080 }
]
}
},

jpeg
https://drive.google.com/file/d/0B0NqktTgc54sa1JCWGhWNXM1dWc/view?usp=sharing
Settings
https://drive.google.com/file/d/0B0NqktTgc54sYmxmU2ZKbEh1Um8/view?usp=sharing

Maybe GX7 matches better .. I didn't try it
Do you find the colors in my conversion wrong ?.

Link | Posted on Oct 7, 2014 at 03:11 UTC

RAW conversion with Rawtherapee ..
Looks like LX100's sensor is very much alike GH4's regarding color filters and raw white level.
You need to add the following paragraph in RT's camconst.json file

{ // Quality X, preliminary support
"make_model": "Panasonic DMC-LX100",
"dcraw_matrix": [ 7122,-2108,-512,-3155,11201,2231,-541,1423,5045 ],
"ranges": {
"black": 16, // 16 is BL offstet calculated from exif data.
"white": [
{ "iso": 100, "levels": 2700 },
{ "iso": 125, "levels": 3100 }, // gh4 data
{ "iso": [ 160, 200, 250, 320, 400, 500, 640, 800, 1000, 1250, 1600, 2000, 2500, 3200, 4000, 5000, 6400, 12800, 25600 ], "levels": 4080 }
]
}
},

jpeg
https://drive.google.com/file/d/0B0NqktTgc54sa1JCWGhWNXM1dWc/view?usp=sharing
Settings
https://drive.google.com/file/d/0B0NqktTgc54sYmxmU2ZKbEh1Um8/view?usp=sharing

Link | Posted on Oct 7, 2014 at 02:51 UTC as 54th comment | 2 replies
Total: 3, showing: 1 – 3