GH1 firmware research volunteers required

It's possible that this bug appears on super long threads... let's hope it will sustain another 100 pages... by next week :)
 
It strikes me as amazing that you can figure this out without a camera to test with. It's like shooting ducks in the dark.
 
Isaac_Brody said:
It strikes me as amazing that you can figure this out without a camera to test with. It's like shooting ducks in the dark.
Click to expand...

It is interesting to know that good hunter do not calculate shooting position and timing (otherwise he will be always late), he just recognizes and reconstruct it from expirience. And many hunters shoot knowing distance and hearing noise of flushing duck. So, sometimes thay can shoot in the dark with success.
 
Most interesting part is to test new bitrate adjustment (and we must start by lowering value, not upping!!!)

And 1920 height, it can work, but most probably it won't (you must try to use divisible by 16 height value).
 
Here is for comparison parameters of Panasonic consumer HD camera, 1920 60i:

Bitrate declared/actual - 16.8/15.6Mb (GH1 is almost the same)
CABAC - Yes (GH1 - No)
Reframes - 4 (GH1 - 1)
GOP Size - 15 (GH1 - same 0.5sec GOP)
I Frame Size - 290Kb (GH1 - 225kb)
P Frames in GOP - 4, each about 90kb (GH1 - 55kb)
B Frames in GOP - 10, each about 37kb (no B frames in GH1)

Here we have smart encoder using bitrate as it must be used.
And reason of mud in GH1 can be seen clearly. P frames size is really bad.
Plus we must take in account that degradation is also due to no B frames and 1 Reframe only.

So, to compare quality with TM700 encoder at 24Mbit we need about 55-60Mbit, may be even 70Mbit, as encoding is actually worse than MPEG2.
 
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Why is the implementation so bad?

Why is the implementation so bad?

how does it compare with the 720p implementation?, is it deliberately "hobbled-deliberately" or is it due to the available processor power, bad engineering or just lack of knowledge by the camera division, surely they share the know-how around the buisness?

Fantastic work Tester13 and at least we are now starting to understand the reason 1080p has mud, more than Panasonic ever told us. Is it a matter of waiting for the GH2 in reality with properly implemented compression?

Many thanks
 
I`d love to know what Panasonic make of this endeavour and what is being discovered..to be a fly on the wall in their office would be very interesting indeed...(obviously a multilingual fly)
 
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I dont get why they even put the 1080p into the camera if its not capable of it? as it stands its a very lame implementation and they should be very very ashamed of themselves, It makes you want to reconsider spending any more cash with these guys, they could of done alot better am sure than this.
 
Hello'

Testing new ptool ver.

Change only this mode.

VA 1920 frame height: 1080 -- change to --> 820 (result. camera can't record video and show text message: NO ADDITIONAL SELECTIONS CAN BE MADE).

VA 1920 frame height: 1080 -- change to --> 1180 (result. camera can't record video and show text message: NO ADDITIONAL SELECTIONS CAN BE MADE).

Testing more.

Regards
NURBS
 
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Next test:

VA Bitrate adjustment 3: 3753 --change to--> 7506 (Can't write more 5sec.) - Frame rate : 23.947 fps wow :evil:

VA Bitrate adjustment 3: 3753 --change to--> 5000 (Can't write more 9sec.) - Frame rate : 25.191 fps wow :cheesy:

VA Bitrate adjustment 3: 3753 --change to--> 4000 - 3800 (Can't write more 28sec.) - Frame rate : 25.000 fps

VA Bitrate adjustment 3: 3753 --change to--> 2000 (Can't write flie)

Regards
NURBS
 
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Nurbs, can you move to the new f/w on May10

Nurbs, can you move to the new f/w on May10

even though you are using the new patched f/w? I want to wait until the new f/w because I want to update the new fw for the 45mm PL lens too which is coming!
 
NURBS said:
Next test:

VA Bitrate adjustment 3: 3753 --change to--> 7506 (Can't write more 5sec.) - Frame rate : 23.947 fps wow :evil:

VA Bitrate adjustment 3: 3753 --change to--> 5000 (Can't write more 9sec.) - Frame rate : 25.191 fps wow :cheesy:

VA Bitrate adjustment 3: 3753 --change to--> 4000 - 3800 (Can't write more 28sec.) - Frame rate : 25.000 fps

VA Bitrate adjustment 3: 3753 --change to--> 2000 (Can't write flie)

Regards
NURBS
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Can you check if there are any diagnostic messages when you go to the service menu. You know how to do this as per your GH1 service manual post.
 
Tameside said:
I dont get why they even put the 1080p into the camera if its not capable of it? as it stands its a very lame implementation and they should be very very ashamed of themselves, It makes you want to reconsider spending any more cash with these guys, they could of done alot better am sure than this.
Click to expand...

It is capable.
But their marketing department specified AVCHD and bitrate available.
It is hard to do anything with this hardware and such restrictions.
Best thing is to introduce 1080 film mode that removes all AVCHD restrictions and uses maximum possible bitrate.
 
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