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GH4 4K Panasonic video camera, official topic
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  • Vitaliy_KiselevVitaliy_Kiselev

    @Sadgasm

    Check topic title, it is not topic about hacks. If you spend few minutes of your precious time you'll find all answers.

  • SadgasmSadgasm

    Was it difficult to remove the limit for the GH2 hack? And did you ever try to remove it from a GH4 or GH3?

  • Vitaliy_KiselevVitaliy_Kiselev

    I am not familiar with the GH2 hack: Was the time limit programmed into the main pcb / rom and could it be removed with the hack?

    Each camera has non volatile settings memory :-) Otherwise just read FAQ.

  • SadgasmSadgasm

    A small hack for the GH4 to remove the damn European 30 minute time limit would be pretty awesome! According to the GH4 service manual the only difference between European and non-European GH4s seems to be the main pcb or ROM. Thus it could be difficult to get rid of the time limit with a firmware hack. Since there are two firmware versions out there (1.0 and 1.1) one could investigate and analyze them.

    BTW: Importing non-European GH4 cameras is not the best solution due to to import duties, taxes and loss of guarantee since Panasonic does not repair for e.g. us units in Europe.

    I am not familiar with the GH2 hack: Was the time limit programmed into the main pcb / rom and could it be removed with the hack?

  • RRRogerRRRoger

    Oedipax You need to give it some time and play with all the adjustments. There is a lot more you can do with a GH4 than a GH1 therefore more things to mess up too.

    I really prefer 1080 P60 AVCHD with stock Cine-V to anything else because the incamera videos are so much better than I need. Even after burning a DVD or BlueRay I get nothing but praise from the viewers.

    Of course you can do better with 4k, but the file sizes and post processing can be very hard on you and your computer.

  • Vitaliy_KiselevVitaliy_Kiselev

    @all

    All workflow talk must be in proper topic.

  • OedipaxOedipax

    I don't know if it's just me but I don't like the 1080p mode on this camera at all. I feel like it's inferior to the hacked GH2, even in the All-I variations. Anyone else find the same? In 4K I've grown to like it a lot more than I did initially. It's a pretty killer studio camera.

  • bleach551bleach551

    @mintcheerios,

    have you tried transcoding the 4K footage into ProRes 1080p, then importing that into you timelime? I transcode my footage to either DNxHD 175X when working in Avid Media Composer and Prores 422HQ when I work in Final Cut Pro 7.

  • aae991aae991

    That's pretty compelling mintcheerios! I'm shooting everything in 4k. In fact I have yet to try 1080p on the GH4. Thanks for presenting this.

  • mintcheeriosmintcheerios

    @itrofnoc I used After Effects and made a 1080p composition to place the 1080p video. I shrunk the 4k image to match the 1080p image and then made pngs out of both images.

  • alcomposeralcomposer

    @ratlabproductions, lots of stuff... I have yet to see a video over 90mbps... Hmmm... I wanna 150 or 190 or something at the same level as the gh2!

    Dummy spit over...

    Obviously I'll get a 132 gig transcend or something in the future anyway- my "indestructible" 64 gig Sandisk cards are getting shabby and breaking... ;-(

  • itrofnocitrofnoc

    @mintcheerios What is your workflow for the downsampling? Thx

  • mintcheeriosmintcheerios

    Got it a couple of days ago and was most interested in a downsampled 4k to 1080p for the 4:4:4 color space. Not only is there visibly more color information than 1080p mode, it has more detail and less compression artifacts.

    mintgh4test.jpg
    1800 x 723 - 211K
  • RatLabProductionsRatLabProductions

    @alcomposer

    What where you filming when you checked the bitrate of the record? My guess is that because its a VBR codec that if the scene is simple with little detail and movement then it records at a smaller rate as its not maxed out.

  • AstroAstro

    @alcomposer Thanks for update.

    Yeah I rang NoFrills cams today..they dont expect an ETA until 10th September (over 2 months now)

    I have the SanDisk 64 95Mb/s card as well, how can you tell its maxing out? Mine held together even with Driftwoods Moon T7...just wondering. I dont think the 1080P moire will probably bother me, hopefully I will shoot in 4K all the time....but yeah I will be interested to see how you go with it, keep us posted. Cheers

  • RKMRKM

    96fps raw could solve the apparant bitrate bottleneck

  • endotoxicendotoxic

    I think 10bit 4:4:4 1080p will be possible via YAGH interface in future firmware update. Also 10bit 4:2:2 internal recording via SD card. Maybe 120fps at some mode. I think is pretty possible, since 1080p is not premium any more, GH4 what a grate tool to transition to 4k.

    What i actually expect is better 1080p performance and the awaited log-c mode. If 10bit 4:2:2 is made internally would be grate.

  • alcomposeralcomposer

    @astro, my gh4 arrived the other day- purchased from a panasonic rep in Adelaide. (pro lighting & grip company).

    I am having fun with it. Bit disappointed with the moire in 1920 but that has to be my only gripe!

    My sandisk pro 64gig cards work in it. However they are to hitting max bitrate - sitting around 60 even in 200mbps mode?! Bit confused. I have a 32 gig panasonic u3 card in the post so will get to the bottom of it ASAP. I don't think anyone else has discussed this. It's feasible that my gh4 is not able to write enough data and falling back to a safe mode - similar to gh2's safe mode.

    Very good interface and screen, almost feels like AF101 replacement with focus peaking etc- would be nice with better video scopes- the current one is LAME- compared to focus peaking and zebras. It's like the software coders just cut and copied the crap histogram from the GH1/2/3- and the rest from the AF101! Panny have to do something with the GH4 as the AF line isn't getting any love- and using the gh4 as a successor makes sense. Especially all the pro features the gh4 has.

    Will look into getting hdmi out into atomos "whatever I buy in future".

    Will wait until new "rumoured" firmware does or doesn't come out this September...

    Cheers Al

  • Vitaliy_KiselevVitaliy_Kiselev

    @ntsan

    For now I think they have very vague idea that it is. As rumors major source - shops and reviewers have no clue also.

  • ntsanntsan

    http://www.43rumors.com/ft4-gh4-firmware-update-will-allow-some-sort-of-raw-video-recording-on-external-recorders/

    awesome if it is true.

  • caveportcaveport

    Apple have GH4 RAW support in software updates on the App Store. Update Version 5.06

  • AstroAstro

    @alcomposer @bleach551 Thanks for the responses. I saw the link on Andrew Reids site for the Thomas Worth command line downscale, I guess in time there will be more that comes to light (no pun intended) about the downscaling process. Also thanks to @bleach551 for his explanation about Avid, I am on the PC tho (10 real cores coming soon) and use Adobe...but the Adobe Media Encoder can do a lot of this, so I will play with that. But I need some 4K in the 1080P timeline...so I guess I will maybe leave that as is.

    @alcomposer You are in Australia too...yeah I paid for mine along with the 12-35 lens nearly 2 months ago...still no sign of it. (No frills Cameras) I have had to download others 4K stuff using 4K downloader so I can get used to the workflow...meanwhile the GH4's are expected to be in stock in OZ anytime...its been a real snore fest waiting for them to arrive. I guess we are "down under"!!

  • AusboyAusboy

    @discomandavis Sorry I haven't got higher res. Did you click on the images or open in a new window? They open to full res.

  • discomandavisdiscomandavis

    @HenryO COuld you post a link to those tweets? or a higher resolution of the conversation? It's unreadable in it's current state. But that is an exciting rumor, save the hackers some time.

  • bleach551bleach551

    @Mrbill,

    After reading my previous post, I must apologize as well for coming off that way. I appreciate the help you tried to give to both @Astro and myself.

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