GH1 firmware research volunteers required

Testing NTSC pach ;-) Working Well!!!

FHD mode (video duration 1:00)

Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps
Standard : NTSC

SHD mode:

Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 59.940 fps
Original frame rate : 119.880 fps

No freezing or some problem when recording. Congratulation!
 
yanbee said:
now NTSC to PAL is Ok thanks!
just.... is it possible that now I see pretty much more artefact on movment?
Click to expand...

Try to use 30min limit patch also.
As PAL seems to have hit on bitrate, and this patch removes it.
All settings are same exactly as on normal PAL camera, so if you see more mud, all PAL users see more mud :)
On 1080p is is just because longer GOP.
Try to put GOP back to NTSC level or lower.
 
tester13 said:
Try to use 30min limit patch also.
As PAL seems to have hit on bitrate, and this patch removes it.
All settings are same exactly as on normal PAL camera, so if you see more mud, all PAL users see more mud :)
On 1080p is is just because longer GOP.
Try to put GOP back to NTSC level or lower.
Click to expand...


right,
i'll try....thanks again!!!
 
NURBS said:
SHD mode:

Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate : 59.940 fps
Original frame rate : 119.880 fps

No freezing or some problem when recording. Congratulation!
Click to expand...

What does this mean by "original frame rate"? Is this the frame rate from before the raw data is encoded? Any glimpse of hope for higher fps than 60?
 
yanbee said:
now NTSC to PAL is Ok thanks!
just.... is it possible that now I see pretty much more artefact on movment?
Click to expand...

Look on GOP structure

1080p PAL: 13
1080p NTSC: 15

You have 1080p PAL: 15

Change your GOP to 13 and look again in the mud.

Regards
NURBS
 
Here is that we must test very carefully:

720p50->23,97
720p60->23,97
Wrapper 60i

We must understand actual frame rate, presense of skipping/non skipping.
Interlace wrapper removal (it is not simple 2x, not pulldown).

We'll be moving slowly to understand how AVCHD setup and encoding works, and how MJPEG setup and encoding works.
Only top bitrate settings can be understood at this point, not actual I,P and individual JPEG frames compression parameters.

Actually we need H264 and JPEG encoding specialists.
Especially ones who understand how VBR works, any constants involved, etc.
 
NURBS said:
Look on GOP structure

1080p PAL: 13
1080p NTSC: 15

You have 1080p PAL: 15

Change your GOP to 13 and look again in the mud.
Click to expand...

You are not very correct here.

PAL : 1080p25 have GOP=round(25/2)=13
NTSC : 1080p23,95 have GOP=round(29.95/2)=15

So, PAL must be better, by idea. Less total frames and lower GOP.
If he don't have GOP patch applied, he can't have 1080p25 and GOP=15.
 
Last edited:
NURBS said:
Look on GOP structure

1080p PAL: 13
1080p NTSC: 15

You have 1080p PAL: 15

Change your GOP to 13 and look again in the mud.

Regards
NURBS
Click to expand...


yes I did it,
it works fine ;)
now i'm recording for check if will be all ok after 30min,
just to be shure of it.
 
tyampel said:
Can you summarize the achievements so far.
Click to expand...

Take a look at first page.

Did we achieve any improvements in quality, such as reductions in mud?
Click to expand...

It is better to ask actual testers.
We are playing with some AVCHD encoder settings.
And we are still in very early stages.
No VBR quality estimation routines known.
I/P frames bits assignment unknown, etc.
Even header files for AVCHD encoder could help here very much.
Panasonic guys, how about small present for International Working Day (Mayday! Mayday! :) ).
 
Tester13 it's posible 1080p 50i mode change to progresive 25p mode? Change it: Format settings, ReFrames: 2 frames -> to 1 frames?

Thanks
NURBS
 
So does it seem like the firmware has hard coded GOP settings and some sub routine adjusts the I/P frames dynamically or can you tell at this time?

It would be more beneficial if we could adjust the I/P frames how we see fit and let the GOP numbers fall where they may however it seems like that might be impossible without more intricate FW knowledge.
 
NURBS said:
Tester13 it's posible 1080p 50i mode change to progresive 25p mode? Change it: Format settings, ReFrames: 2 frames -> to 1 frames?
Click to expand...

It is not possible to understand you considering Reframes.

I updated PTool 3.11 (yes, version is the same) and included native patch.
It won't work with 90% probability anyway, but worth testing and finding differencies.
 
Svart said:
So does it seem like the firmware has hard coded GOP settings and some sub routine adjusts the I/P frames dynamically or can you tell at this time?

It would be more beneficial if we could adjust the I/P frames how we see fit and let the GOP numbers fall where they may however it seems like that might be impossible without more intricate FW knowledge.
Click to expand...

Also impossible to understand, just strange.
How they can be hardcoded then we change them and it works?
Try to read my posts in last pages.
 
Tester13 you are genius :)

AV Native 24/25p attempt

FHD mode:

Video
ID : 4113 (0x1011)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L4.0
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Duration : 1mn 7s
Bit rate mode : Variable
Bit rate : 16.8 Mbps
Maximum bit rate : 16.6 Mbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Original frame rate : 50.000 fps
Standard : NTSC
Resolution : 8 bits
Colorimetry : 4:2:0
Scan type : Progressive
Bits/(Pixel*Frame) : 0.324
Stream size : 136 MiB (95%)

Regards
NURBS
 
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