GH1 firmware research volunteers required

sirk said:
Hello guys, I couldn't follow the development of this thread the past three weeks. Is there any how-to for reverse engineering the firmware. I thought of things like dumping and flashing the firmware and general information.
If not, I would like to encourage you guys to put up a wiki for this issue or at least some kind of tutorial to get more people on the boat. I would also offer putting up a wiki for this project, if there is any need. Maybe we should gather information about the firmware.
Click to expand...

I am pretty sure that if you load the original firmware into the patching software and do not select any options and then save that file, you will be able to update your firmware with the 'rolled' back version.

I have not tried this personally but read about this on a post in a dpreviews thread. Look towards the bottom of this page for a post made by tyampel:
http://forums.dpreview.com/forums/readflat.asp?forum=1041&thread=35210928
 
SENDING AUDIO / VIDEO to a monitor!

SENDING AUDIO / VIDEO to a monitor!

I understand that efforts are being made to at some point discover how to output audio / video to a monitor during a video recording...?

I read on a forum (dpreviews.com) that it is possible to do this now in the picture-taking mode by connecting the camera to a monitor via the usb cable and pressing the Trash (Bin) button for a few seconds.

I dont know if knowing this may help tester13 with this process but i just thought i`d share what i learned.

see here
(look for the post by a Tony Wakefield)
 
I use a PAL GH1 and have removed the 30 minutes limit.
Great.

I only film in 720 mode. Does it make sense to also install the changed bitrate?
 
ac17 said:
I understand that efforts are being made to at some point discover how to output audio / video to a monitor during a video recording...?

I read on a forum (dpreviews.com) that it is possible to do this now in the picture-taking mode by connecting the camera to a monitor via the usb cable and pressing the Trash (Bin) button for a few seconds.
Click to expand...

You can do that with the yellow chinch cable. But not during record. Only before and after, which is better than HDMI, because HDMI can only be used while playback.

Has the HDMI out been hacked yet?

At least the preview ? Already this would help a great deal.
 
Testing new ptool ver.

Modified 1920 frame height patch (try to use 816 or 8 multiples) - Same text and camera can't recording.

Regards
NURBS
 
AKED said:
You can do that with the yellow chinch cable. But not during record. Only before and after, which is better than HDMI, because HDMI can only be used while playback.

Has the HDMI out been hacked yet?

At least the preview ? Already this would help a great deal.
Click to expand...

The composite video output during recording may indeed be an artificial limitation implemented for marketing reasons and may be indeed overcome by changing the firmware code. I know my Sony H50 has the video output enabled in video mode during recording.

The HDMI output on the other hand may require too much CPU attention and therefore not possible to hack.
 
tyampel said:
The composite video output during recording may indeed be an artificial limitation implemented for marketing reasons and may be indeed overcome by changing the firmware code. I know my Sony H50 has the video output enabled in video mode during recording.

The HDMI output on the other hand may require too much CPU attention and therefore not possible to hack.
Click to expand...

It is pure speculation.
We don't know yet how they are implemented.
 
NURBS said:
Testing new ptool ver.

Modified 1920 frame height patch (try to use 816 or 8 multiples) - Same text and camera can't recording.
Click to expand...

Thanks. We'll play with it few more times adjusting patch and testing.

Try to test "VA Bitrate adjustment" (this patch only) 1080p at 10.000.000, 6.000.000, 3.000.000 and 1.000.000 (all at detailed scenes). I need this files to compare them to ones we have from "VA Bitrate adjustment 3".
 
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PTool 3.16 Released

MJPEG Base audio sampling patch added
MJPEG 30fps->24fps patch modified
1920 frame height patch modified
VA 720p59,94fps->29,97fps patch (was 23,97)
VA 720p50,00fps->25,00fps patch (was 23,97)
 
Hello tester13'

My test results (ptool 3.16):

1920 frame height patch modified - Can't working, same text on display: NO ADDITIONAL SELECTIONS CAN BE MADE

VA 720p50,00fps->25,00fps patch (was 23,97) - Working well

Bit rate : 6 168 Kbps
Frame rate : 25.000 fps
Original frame rate : 50.000 fps

MJPEG Base audio sampling patch added - 196000 (QuickTime player can't read this file) - 128000 (Can't too) and Show this message: Error - 2048

MJPEG 30fps->24fps patch modified - Working well but can't test drop frame, if anyone can test this mode, please do it.

Format : M-JPEG
Codec ID : jpeg
Duration : 24s 500ms
Bit rate mode : Variable
Bit rate : 24.1 Mbps
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 24.000 fps
Bits/(Pixel*Frame) : 1.091

Download link: http://rapidshare.com/files/384163787/mjpeg_24p.mov.html

Next test will be soon:

VA Bitrate adjustment: - 20.000.000 - 9,9 MB
VA Bitrate adjustment: - 16.000.000 - 8,1 MB
VA Bitrate adjustment: - 10.000.000 - 5,7 MB
VA Bitrate adjustment: - 6.000.000 - 3,4 MB
VA Bitrate adjustment: - 3.000.000 - 2,1 MB
VA Bitrate adjustment: - 1.000.000 - (camera can't write the file)

Download link: http://rapidshare.com/files/384169652/avchd_bitrate_test.zip
 
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