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Top Rez 24p ONLY - FOOTAGE TEST AND SETUPS
  • terry2terry2

    I started this topic editing an old post. Many shooters use theirs camera for different usage: interview, TV, documentaries etc. Some needs 1080i, some 1080p, some slow motion etc. Some don't need top quality or they want to use average cards. But I thought, let's start a topic ONLY focused on the best quality achievable by the GH2 to shoot movies. For best quality I mean minimum 1080P, 24p or slow motion, minimum 100Mbps, best dynamic range possible and lowest compression. Where people post footage test and only patches for top. I'll start by posting our test shooting hand held (to see how the camera and codec handles vibrations), car moving and different Davinci grading.

  • 37 Replies sorted by
  • re9dre9d

    @troyjason RE:And lenses create the final look (PL primes being the top choice).

    What do you think of using Canon FD, super-16 C-Mount, or b4 mount with 2x lenses?

  • troyjasontroyjason

    you are a funny guy terry2 - very funny.

  • terry2terry2

    @Macalincag I thought about cinemartin, but it would be the same situation that there is with the ninja = HDMI signal out of the gh2 is not that great. Not real current benefits in hdmi out if compared to Quantum. I guess the best possible thing would be to get the 10bit encoding working (even at 4:2:0) and then wait for future gh3. Thanks for the suggestion anyway. Cheers

  • MacalincagMacalincag

    @terry2

    If (and that's a big if) the GH2 is able to output uncompressed and you want to record into Cineform, you might want to look into this for a future solution: http://cinemartin.com/

    Although I don't know when this is to be released, it is the only external recorder I've read about outputting to the Cineform codec.

  • terry2terry2

    @chauncy @Macalincag So, a simple answer is "No, it's not possible due to etc etc". I think that in here we are professionals and adults (some). No one wants to waste time as this is not Facebook, but a tool to share experiences with these patches. Besides, there are no stupid questions but only stupid answers. Also DPX was said to be impossible to be exported on fcp in a REAL 16bit config. Bob Monagham did it. Not to mention Les Dittert and his revolutionary scan. All people whom I worked with. Vitaliy and his hack! Genious. Driftwood and his Patches! Brillant. So, if you Chauncy, Macalincag etc guys think that all people, like me, that don't know things like you do and are just trying to learn and share are stupid, just don't answer. Because making fun of us, it's just plain idiotic and disrespectful. And that yes, it is by definition very arrogant. Thank you.

  • chauncychauncy

    @lpowell what a great show "dream on" was. A guy who thinks in tv shows. And well done in the response.

    I guess some people don't get it. Why is it some think they alone have a great idea that no one else has thought of? It comes across as arrogant. And all of their ideas are supposed to be doable from what is probably a binary, reverse engineered dump file. Change the codec? Seriously? That would be hard if you had all the schematics and code in front of you.

  • MacalincagMacalincag

    @terry2

  • terry2terry2

    @LPowell I'm serious. And as I ask proper and serious questions, I'd like to receive proper and serious answers. Thank you

  • LPowellLPowell

    @liquidify - "If storage is not the current bottleneck, then what is specifically?"

    The damn thing breaks if you push it too hard.

    @terry2 - "Cineform would be a great codec for this camera."

    Too bad neither Cineform nor the GH2 were around to shoot this modern classic:

  • terry2terry2

    @LPowell Is the choice of the encoding codec somehow modifiable with a hack or not? Is it hardware tied? Like in a rom or something? Cineform would be a great codec for this camera. Or make the curet output 10bit which is indeed possible in a avchd intra? About 24 P and shutter speed, so far best results are given by 50 speed. Probably the shutter speed could be hacked to achieve a 48 shutter speed (or 47.952) and vice versa 23.976 increased to 24p. @ everyone At 24p, pan slow. At least 30 seconds for 180 degrees. Ciao

  • liquidifyliquidify

    @LPowell Isn't this the curve that the hack and patches are attempting to augment, and successfully? I'm pretty new to this forum and I am trying to understand what specifically is bottlenecking the flow of information from sensor to storage for video stream only. My assumption had always been that since you guys have been able to cause problems with spanning due to speed of storage, that storage speed was the primary bottleneck.

    Or are the spanning problems completely firmware related?

    If I am correct, a SDXC card rated at 95 MB should be able to hit 30 MB/ s in larger file transfers http://www.personal-view.com/talks/uploads/FileUpload/30/1998a0dc2b868abe97040d29e33ff7.png. I suspect that packet size and transfer type is probably short fast bursts of small amounts of data, and SD cards perform worst at these file sizes.

    If storage is not the current bottleneck, then what is specifically?

  • LPowellLPowell

    @liquidify Actually, no, and not really. Video bandwidth is primarily limited by marketing cycles:

    http://en.wikipedia.org/wiki/File:Gartner_Hype_Cycle_for_Emerging_Technologies.gif

  • liquidifyliquidify

    @LPowell Could removing sound or minimizing sound quality have any potential effect on the video stream density able to reach the SD card? I am assuming that the limits of the hardware has been issue primarily because of the slowness of storage medium so far. Hypothetically, lets assume an unlimited storage speed. Would video bandwidth be limited by bus speed or code or ...?

  • LPowellLPowell

    @terry2 - "So, I'm trying to establish, once for all, in a straightforward, yes-no-not yet answer..."

    Fair enough, the answer is NO.

    However, if you're interested in recording with a 4:2:2 MJPEG codec, I'd suggest picking up a used GH1 and installing my 75Mbps Peak Reliability Patch:

    http://www.personal-view.com/talks/discussion/334/gh1-75mbps-peak-reliability-patch-v2-update#p1

  • terry2terry2

    @LPowell That's exactly what I'm referring to. But in a post between you and Vitaliy you wrote that a real 24p was not possible because the gh2 was hard wired and Vitaliy said that it is not true. So, I'm trying to establish, once for all, in a straightforward, yes-no-not yet answer, if a real 2k from the sensor (downsapled from the sensor full rez, not upsampling nor crop Scarlet-style), with a real 24p (not the 23.976 nor 30fps with 5 frame taken off) in a mjpeg codec at high bitrate is possible or not. Trust me, I have my assistant going crazy to patch all infos together, his wall looks like "Flashforward"

    @svart you need to convert it to a 4:2:2 codec first and wrap it in a mov.

  • troyjasontroyjason

    lol

  • LPowellLPowell

    @terry2 - "So, can we rule out that real 2k (not upsampled from 720p) real 24p mjpeg will ever happen?"

    Please link to your sources for these rumors.

  • troyjasontroyjason

    @terry2 - What else is there apart from what I just posted?

  • svartsvart

    How did you get Davinci to ingest GH2 footage? I've tried a number of different transcodings and it won't work with any of them for me..

  • terry2terry2

    @troyjason what I'm trying to create here is a one thread that reunite all updates and infos for a specific usage of a gh2. In a way that a shooter can quickly pick the updates and visually test them. Example, a 88mbit patch that works well on 720p is not a setup that push the camera at the limits. So that patch or setup would be in a different thread. I'm surely not asking dps to post their more advanced research, they wouldn't do anyway even if they say they will. Like photographer don't like to have people knowing too much about their light setup before the shoot (less nowadays since photoshop)

  • terry2terry2

    @LPowell

    @Vitaliy doesn't agree with you about the hard wired 30fps thing. Why your positions differ? So, can we rule out that real 2k (not upsampled from 720p) real 24p mjpeg will ever happen?

  • troyjasontroyjason

    @terry2 - I guess I am still at a loss as for what you are looking for.

    Everyone uses a small handful of patches (Quantum, Flowmotion, Sanity etc - these patches are in flux right now and the creators are working hard to tweak them - follow their threads for more info).

    Everyone uses smooth or nostalgic for profile set to -2,-2,0,-2. This gives us the most DR.

    Everyone uses an ISO setting on the top row after selecting one in the second row (GH2 iso bug).

    And lenses create the final look (PL primes being the top choice).

    What else are you looking for? Those are the best "movie shooting setups."

    Take care.

  • LPowellLPowell

    @terry2 Yes, all MJPEG videos are hard-wired to record at 30fps. The MJPEG frame rate patch in PTool is flawed and cannot genuinely change the 30p rate at which the shutter fires. If you set the patch to 24p, all it does is force the MJPEG encoder to discard 30p frames as necessary to approximate a 24p frame rate.

  • terry2terry2

    @troyjason Flomotion mjpeg is 30fps right?

  • terry2terry2

    @troyjason True, there is no sense to post non MTS nor R3d for certain analysis. But I think that when you are in the industry you can "understand" even by watching ungraded footage on how the "setup" (gear+codec) handle latitude (sorry Dynamic range) and motion. As for non visual differences between Epic and GH2? Come on... I mean, if the gh2 would pump out a raw codec or at least a 10bit 4:2:2 then yes maybe competition would be (at least at 2k)... I agree Zeiss gave us best results overall. But didn't notice any big visual difference between Cooke and my ZF2 (PL mount vs Nikon mount). I haven't notice any difference between the CP2 and ZF2. I'm purchasing Duclos zf2. I find it always difficult, with pro lenses, to find "the best". They all have characteristics that make them "writing" a visual the way we feel. So it's more of a search of personal look. But again, I'm not a DP. I'm a director and photographer. Different specializations.

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