GH2 DO NOT POST SEPARATE THREADS: GH2 Hack | Questions and Answers Thread

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Park Edwards

Veteran
TEMPORARY: ALL QUESTIONS RELATED TO THE GH2 HACK PROCESS GO HERE. DO NOT POST YOUR OWN TOPIC. REFER TO PERSONAL-VIEW.COM FOR MORE IN-DEPTH INFORMATION.

Beginner Questions and Answers: http://www.personal-view.com/talks/discussion/443/basic-and-beginner-questions

Collection of Hacks/Patches RIGHT HERE: http://www.personal-view.com/talks/discussion/953/gh2-patch-vault-most-popular-patches-in-one-place

Very Simple Guide on how to do it (At your own risk!): http://www.sam-mallery.com/2011/11/an-ez-guide-to-hacking-the-panasonic-gh2/

GH2 Hack FAQ and more (has succinct and great explanations of things, like ETC mode etc): http://www.personal-view.com/faqs/

Just like the thread title says. Ask a non subjective question about the Gh2 hack and I will answer it with the best of my knowledge. If I can't, I will have someone else chime in. This is not a "what is the best hack for my camera" thread. This is meant for direct and concise questions.

Example:
Question: What is the ptool?
Answer: The ptool is the program the creator of the Gh1 hack created to allow you to manipulate certain aspects of the camera's settings. I.E. The bitrate, the frame rate, the PAL 30 min limitation and so forth.

If you ask me "what the best anything" is, I reserve the right to ignore you and kick your dog. For 24 hours only. And maybe a few minutes thereafter. No chit chat either. If you have a comment, save it for another thread. If you see I've made an error in my answer, PM me. And...go....
 
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I have one, or two:

1. Do I remember right, that even mjpeg is 4:2:0 on the GH2?
2. As with GH1 there´s no chance of ever getting a 24p or 25p mjpeg going? Not even on 720p?

Thanks!
 
does high ISO require high bit rate? Can you get useable results from stock rate, or reasonably low hack rates for stuff like wedding receptions.
 
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In terms of working with the hacks up until now, aside from spanning and overcranking, is there any other reason to go with the current top card, Sandisk 64Gb 95Mb/s? Would a Sandisk class 10 (30Mb/s) be largely sufficient for the extremely high bit rate hacks like Seaquake otherwise?
 
1. Do I remember right, that even mjpeg is 4:2:0 on the GH2?


Yes.

MJEPG 4:2:2 has strange bugs starting from G2.

2. As with GH1 there´s no chance of ever getting a 24p or 25p mjpeg going? Not even on 720p?

Why not?

But it is very hard due to the fact that all encoders, and video setup are specifically tuned to only specific modes.

>does high ISO require high bit rate? Can you get useable results from stock rate, or reasonably low hack rates for stuff like wedding receptions.

High bitrate saves your noise from smearing and making the mess. So, you could work with it later.

>Do hacks alter skin tones differently and if so which patch has the best skin tones for 720p 60

Hacks do not touch color modes. yet.

>is there any other reason to go with the current top card, Sandisk 64Gb 95Mb/s?

Main reason is to be absolutely sure in spanning and no errors.

If you on paid job such card will pay
 
Does the Hack void my warranty?

Is GOP = 1 easier to edit than the stock GOP?

Are there any GOP = 1 settings that are stable and don’t clip the I and P frames to the same value for 720p @ 60 FPS so that we can do frame accurate editing for slow motion.

If Panasonic could add new frame rates like 25p and 30p what prevents us/VK from adding new frame rates into the firmware?

I know VK is working hard at getting the new firmware hacked. Do we have a timeline or estimate of when that will be complete?

What is the process for hacking the new firmware? Does it have to be decrypted? Is it significantly different than the old firmware(ie: new settings)?

Is it possible to add the focus tracking for video back in?
 
JackBayer said:
I have one, or two:

1. Do I remember right, that even mjpeg is 4:2:0 on the GH2?
2. As with GH1 there´s no chance of ever getting a 24p or 25p mjpeg going? Not even on 720p?

Thanks!
Click to expand...

1. Yes, for now. See V's response on the glitches.
2. It just skips frames. But there is a possibility to eventually get true 24p. Never say never.
 
dop16mm said:
does high ISO require high bit rate? Can you get useable results from stock rate, or reasonably low hack rates for stuff like wedding receptions.
Click to expand...


As V said, the higher the bitrate, the better the noise renders. It's not required, but it helps. Getting useable results is up to the operator. Not many people have complained about the stock rate. This can't be answered objectively.
 
J Davis said:
Do hacks alter skin tones differently and if so which patch has the best skin tones for 720p 60
Click to expand...

No evidence has pointed to better skin tones. The higher bitrate will probably allow better grading in post. Which patch has the best skin tones is opinionated. So I can't answer that. But I believe they are equal across the board in terms of color rendition.
 
yoclay said:
In terms of working with the hacks up until now, aside from spanning and overcranking, is there any other reason to go with the current top card, Sandisk 64Gb 95Mb/s? Would a Sandisk class 10 (30Mb/s) be largely sufficient for the extremely high bit rate hacks like Seaquake otherwise?
Click to expand...

It doesn't hurt. The pros of a 64GB/95MB/s is it can span, the con is it can't playback when it does span. What you mentioned is the primary reason why people buy the cards. It spans, and can handle a little more for bursts. I myself am going to wait until the cards become cheaper, as with the rate of technology doubles every year and these will be cheaper soon enough.
 
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mpgxsvcd said:
Does the Hack void my warranty?

Is GOP = 1 easier to edit than the stock GOP?

Are there any GOP = 1 settings that are stable and don’t clip the I and P frames to the same value for 720p @ 60 FPS so that we can do frame accurate editing for slow motion.

If Panasonic could add new frame rates like 25p and 30p what prevents us/VK from adding new frame rates into the firmware?

I know VK is working hard at getting the new firmware hacked. Do we have a timeline or estimate of when that will be complete?

What is the process for hacking the new firmware? Does it have to be decrypted? Is it significantly different than the old firmware(ie: new settings)?

Is it possible to add the focus tracking for video back in?
Click to expand...

1. It's possible. Anytime you manipulate your camera, it can possibly void your warranty. If you ever have to return it, it's best to flash your camera to stock settings.
2. I would need someone who's more tech savvy to answer this?
3. Because they engineered the code. V is dissecting it. I'm sure there's many variables in the equation of hacking.
4. No.
5. I don't know.
6. It's probably best you ask these questions on the personal-view forum as they're not faq questions.
 
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