GH1 firmware research volunteers required

Hi, I have read a bit through the thread, but it is far too technical for me.

I have used the hack to unlock the 30 minutes PAL limit. Works great.

But now my question:

I see the information on page 1 of this thread.

There are letters behind the lines of your hack tool (W, R, U, T, PW), that may indicate that, but I did not find a place, where these letters are explained.

For me, a user of the 720 PAL format would be interesting, if a higher bitrate for the 720 p50 format is already there and if it is safe to use.

You write:

4) VA Bitrate Adjustment,
VA Bitrate Adjustment 2 and
VA Bitrate Top Limit - must be used together, no more then 24Mbps.
Click to expand...

Is it safer, to use for example 22 Mbps instead of 24Mbps?

Is this for MJPEG or AVCHD or both?
For 720 or 1080m or both?

Will it increase the quality of the the picture also in 720p50?

Thanks for the answers already.
 
Last edited:
AKED said:
Hi, I have read a bit through the thread, but it is far too technical for me.
Click to expand...

It will become much more technical in the future :)
If you want something for dummies, you found wrong place.
I suggest you to read satellite encodings related forums, if you want it really hard :)

There are letters behind the lines of your hack tool (W, R, U, T, PW), that may indicate that, but I did not find a place, where these letters are explained.
Click to expand...

Markings legend added to first page.

Is it safer, to use for example 22 Mbps instead of 24Mbps?
Is this for MJPEG or AVCHD or both?
For 720 or 1080m or both?
Will it increase the quality of the the picture also in 720p50?
Click to expand...

VA Bitrate settings affect both 1080p and 720p (in maximum quality).
And all this patches are safe, worse thing is camera can freeze and you must remove bettery.
 
tester13 said:
It will become much more technical in the future :)
If you want something for dummies, you found wrong place.
I suggest you to read satellite encodings related forums, if you want it really hard :)
Click to expand...

Thanks, no demand for more cunfusion :)

Markings legend added to first page.
Click to expand...
Thank you, very helpful

VA Bitrate settings affect both 1080p and 720p (in maximum quality).
Click to expand...
I can not change the quality apart from FHD (1080) and SH (720) and of course H and L, which are not HD and AVCHD and MJPEG.
So what do you mean with "in maximum quality"?

And all this patches are safe, worse thing is camera can freeze and you must remove bettery.
Click to expand...
Does it make sense to change the GOP size for the PAL version?

It is the codec more stable than?

And if yes, to what number?
at the present 720 is 26 and 1080 is 13.


Thanks for the info and your work. It is greatly appreciated.
I just send 20$ donation this morning.
 
Last edited:
AKED said:
Thanks, no demand for more cunfusion :)
I can not change the quality apart from FHD (1080) and SH (720) and of course H and L, which are not HD and AVCHD and MJPEG.
So what do you mean with "in maximum qualirty"?
Click to expand...

Maximum quality - 720p SH mode.
FHD and 720 maximum quality have same bitrate settings, so they are both adjusted.
And no, you can't adjust other resolutions (I don't know why you need this).
MJPEG is also not adjustable.
I am working on compression and this thing progresses slowly.
 
Last edited:
Thanks for the clarification.

For your information:

I used the first update, coming from version GH1_121.bin, ticked only the "Version change" and the "30 min limit". Saved it as GH1_123.bin.

And updated the firmware in the camera, no problem.

Now I wanted to add the bitrate, I used again the original version GH1_121.bin, ticked again "Version change" and the "30 min limit" as well as the "VA Bitrate top limit" as well as" VA Bitrate adjustment 2" as stated on page 1 and set the bitrate to 24000000

I saved as GH1_124.bin and put it on the SD card.

But the GH1 does not accept the firmware update.
Always when I press the play button it days"no pictures to display" (I formatted the card before putting the new firmware hack on it. So there is no other data on the card, the camera is hooked to the net, not on battery).

Is that due to the fact, that the bitrate is still in tested mode or did I make a mistake?
(I updated the firmware 3 times before that, so I generally know how it works).
 
AKED said:
Thanks for the clarification.

saved as GH1_124.bin and put it on the SD card.

But the GH1 does not accept the firmware update.
Always when I press the play button it days"no pictures to display" (I formatted the card before putting the new firmware hack on it. So there is no other data on the card, the camera is hooked to the net, not on battery).
Click to expand...

No it is due to the fact that you leave default "Version increment" input field, and you need to make it bigger with each new update.
 
Got it. Thanks.

This is still not clear for me:


Does it make sense to change the GOP size for the PAL version?
It is the codec more stable then?

And if yes, change to what number?
At the present 720 is 26 and 1080 is 13.



Thanks for your patience and VERY quick answers.
Are you in Europe?
 
Last edited:
AKED, what did you do wrong?

AKED, what did you do wrong?

when going from 123 to 124 exactly, I thought you ticked the version update, did you need to use the new 123 version with the tool?
 
Tameside said:
when going from 123 to 124 exactly, I thought you ticked the version update, did you need to use the new 123 version with the tool?
Click to expand...

When you tick "version change", at the bottom there is space to: "Enter version increment"
When you I did it the first time, I did not see it and everything was ok, because it was the first.
So I did not change anything there whit the 2nd hack-firmware-update.
That was not accepted by the camera.
When you do the 2nd hack-update, you have to enter a "2" and with the next a "3" and so on. So that the camera knows, that it is another hack update.
The extention in the file name does not help in the camera.
There, it still shows firmware 1.2.
 
AKED, have you noticed any improvement in 720p

AKED, have you noticed any improvement in 720p

To be honest if tester13 improves the 720p iq I'd be happy.
 
sirk said:
I think this thread is overblown.


I've created a wiki
Please feel free to participate!


You can find it here: http://gh1.wikidot.com/
Click to expand...

Also, it seems this wiki can't be edited, since I can't join. IDK I've never worked on a wiki page before.

I wanted to add a section of links to uploaded files, categorized into which patch version was used.
 
DanDOF said:
I only use 720p60. So the only thing I'm hoping for is 720p24 as an extra option, either MPEG or AVCHD.
Click to expand...

It'll be tough.
Try to use present 720p50->720p25 patch (requires PAL patch, of course, also) to see if it produces suitable results. Bitrate drops accordingly to framerate, but individual frame quality is not worse.
 
tester13 - On the GH1 you can control the frame rate for 720p AVCHD by lowering the shutter speed. If you set the camera in full manual mode, you can lower the shutter speed from 1/60 all the way down to 1/6 at least and the frame rate will automatically drop accordingly. So at shutter speed 1/8 the video is at 8 fps. I bring this up because it might help you figure out how to achieve 720p24 without skipping frames.
 
noirist said:
tester13 - On the GH1 you can control the frame rate for 720p AVCHD by lowering the shutter speed. If you set the camera in full manual mode, you can lower the shutter speed from 1/60 all the way down to 1/6 at least and the frame rate will automatically drop accordingly. So at shutter speed 1/8 the video is at 8 fps. I bring this up because it might help you figure out how to achieve 720p24 without skipping frames.
Click to expand...

Can you make such short videofiles and upload them to look closely (start from p60 and go lower)?
Please, provide all available shutter speeds below 1/60.
As you can set shutter speed below 1/60 I see no problem in using working 720p25 patch. It is not that different from 24fps.
 
noirist said:
tester13 - On the GH1 you can control the frame rate for 720p AVCHD by lowering the shutter speed. If you set the camera in full manual mode, you can lower the shutter speed from 1/60 all the way down to 1/6 at least and the frame rate will automatically drop accordingly. So at shutter speed 1/8 the video is at 8 fps. I bring this up because it might help you figure out how to achieve 720p24 without skipping frames.
Click to expand...

i may be mistaken, but that's simply not the case. changing shutter speeds doesn't change frame rate. once you go below 1/60 shutter you're doubling frames.
 
Car3o said:
i may be mistaken, but that's simply not the case. changing shutter speeds doesn't change frame rate. once you go below 1/60 shutter you're doubling frames.
Click to expand...

This is why I asked for files :)
But with 720p25 patch this doubling is to your advantage,as I am not sure if it just simply do not skip each 2nd frame.
 
You must log in or register to reply here.
Back
Top