MJPEG 422 test footage, green screen, etc

[dpotuznik]

Hi,
i have made an rapid test whith the green screen .. it's Really coool
my footage it's not perfect but you really see the difference

my settings are

422 checked
Quality: 320,275,250,230
Table : 24,24,24,24


http://www.dpotuznik.com/gh1/mjpeg_unpatched.flv

http://www.dpotuznik.com/gh1/mjpeg_patched.flv

[testdasi]

What does the 422 and 420 mean?

[Oedipax]

What does the 422 and 420 mean?

http://en.wikipedia.org/wiki/Chroma_subsampling

422 records more color information than 420 so for special applications like greenscreen it makes for better results and less time finessing masks and what not.

[Oedipax]

And it definitely shows a big improvement in those FLV files. Thanks for doing a test, dpotuznik!

[nobbystylus]

ahh.. you've thrown me now.. i'm doing a greenscreen shoot tomorrow morning.. must resist urge to tamper with settings before big shoot day.... erk

[sammysammy]

so you guys think for sure its better overall to shoot mjpeg with the 422 rather than the new patched avchd 24p? im also about to do a greenscreen shot in a week

[Oedipax]

so you guys think for sure its better overall to shoot mjpeg with the 422 rather than the new patched avchd 24p? im also about to do a greenscreen shot in a week

Only one way to find out! But my educated guess would be that 720p at 4:2:2 will trump 1080p at 4:2:0 where keying is concerned.

[sammysammy]

thanks

[dpotuznik]

hi,
I try to test soon with the AVCHD in 1080P and 720p.

but whith this setting in Mjpeg you have only about 4min recording on 8Gb Card

[dpotuznik]

hi,
i made the new test,

http://www.dpotuznik.com/gh1/mjpeg_unpatched.flv
http://www.dpotuznik.com/gh1/mjpeg_patched.flv
http://www.dpotuznik.com/gh1/AVCHD1080p_unpatched.flv
http://www.dpotuznik.com/gh1/AVCHD1080p_patched.flv
http://www.dpotuznik.com/gh1/AVCHD720p_unpatched.flv
http://www.dpotuznik.com/gh1/AVCHD720p_patched.flv

in Mjpeg you see really the diffrence between patched and unpatched.
but in AVCHD it's work nice too.

my seeting for AVCHD
video buffer 40.000.000
video bitrate 50.000.000
Overall 52.000.000
Limiting Bitrate 60.000.000