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Attila Bakos

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  1. Like
    Attila Bakos reacted to andrew_dotdot in Interpretation issues of Fujifilm video files in Davinci Resolve, Premiere Pro and Final Cut Pro   
    Thanks for the LUTs and ffmpeg fix technique.
  2. Like
    Attila Bakos got a reaction from dgvro in Interpretation issues of Fujifilm video files in Davinci Resolve, Premiere Pro and Final Cut Pro   
    The issue this video covers was already mentioned in several topics, but I promised a video explanation and fixes, so here it is.
    Beware: long, boring, bad English.
     
  3. Thanks
    Attila Bakos got a reaction from Stathman in Interpretation issues of Fujifilm video files in Davinci Resolve, Premiere Pro and Final Cut Pro   
    The issue this video covers was already mentioned in several topics, but I promised a video explanation and fixes, so here it is.
    Beware: long, boring, bad English.
     
  4. Like
    Attila Bakos reacted to Sage in GH5 to Alexa Conversion   
    Sure; it depends on what you'd like. Fuji and BMD have very good, usable color. I personally will use P4K with GH5; I hope to have EC to do a production this summer.
    8 bit is tricky; I'd prefer to only support 10 bit cameras, though I will try to find a way that will give viable production level results with 8-bit. I think Log is not really in the cards there.
     
    Bit of really cool news; last weekend, the director of a film starring Josh Hartnett wrote to me to say that they were using the GH5 with EC as a pick-up cam alongside Alexa Minis and XTs.
    He said that a senior Star Wars colorist was doing the grade, and said that 'everybody was very impressed' with it. I was pretty thrilled with that
  5. Like
    Attila Bakos got a reaction from Sage in GH5 to Alexa Conversion   
    Oh yes, this is the kind of detail that excites me   Keep them coming. Too bad I can't scroll that still image ?
    I've chosen not to deal with hue shifts in my own conversions, but in your situation where one camera has way more DR than the other, it seems like something that can't be ignored.
  6. Like
    Attila Bakos got a reaction from thebrothersthre3 in GH5 to Alexa Conversion   
    Oh yes, this is the kind of detail that excites me   Keep them coming. Too bad I can't scroll that still image ?
    I've chosen not to deal with hue shifts in my own conversions, but in your situation where one camera has way more DR than the other, it seems like something that can't be ignored.
  7. Like
    Attila Bakos got a reaction from KnightsFan in ProRes and H.265 Comparison   
    It records a lot of stuff, including aperture and ISO, use Exiftool.
    Here's a sample output:
    ExifTool Version Number         : 11.29
    File Name                       : DSCF7556.MOV
    Directory                       : .
    File Size                       : 606 MB
    File Modification Date/Time     : 2019:01:26 19:27:17+01:00
    File Access Date/Time           : 2019:01:26 19:34:59+01:00
    File Creation Date/Time         : 2019:01:26 19:34:59+01:00
    File Permissions                : rw-rw-rw-
    File Type                       : MOV
    File Type Extension             : mov
    MIME Type                       : video/quicktime
    Major Brand                     : Apple QuickTime (.MOV/QT)
    Minor Version                   : 0.0.0
    Compatible Brands               : qt
    Movie Header Version            : 0
    Time Scale                      : 25000
    Duration                        : 25.00 s
    Preferred Rate                  : 1
    Preferred Volume                : 100.00%
    Preview Time                    : 0 s
    Preview Duration                : 0 s
    Poster Time                     : 0 s
    Selection Time                  : 0 s
    Selection Duration              : 0 s
    Current Time                    : 0 s
    Next Track ID                   : 4
    Track Header Version            : 0
    Track Create Date               : 2019:01:14 16:13:13
    Track Modify Date               : 2019:01:14 16:13:13
    Track ID                        : 1
    Track Duration                  : 25.00 s
    Track Layer                     : 0
    Track Volume                    : 0.00%
    Image Width                     : 4096
    Image Height                    : 2160
    Graphics Mode                   : srcCopy
    Op Color                        : 0 0 0
    Compressor ID                   : hvc1
    Source Image Width              : 4096
    Source Image Height             : 2160
    X Resolution                    : 72
    Y Resolution                    : 72
    Bit Depth                       : 24
    Color Representation            : nclc 1 6 6
    Video Frame Rate                : 25
    Time Code                       : 3
    Balance                         : 0
    Audio Format                    : lpcm
    Audio Channels                  : 3
    Audio Bits Per Sample           : 16
    Audio Sample Rate               : 1
    Matrix Structure                : 1 0 0 0 1 0 0 0 1
    Media Header Version            : 0
    Media Create Date               : 2019:01:14 16:13:13
    Media Modify Date               : 2019:01:14 16:13:13
    Media Time Scale                : 25000
    Media Duration                  : 25.00 s
    Handler Class                   : Media Handler
    Handler Type                    : Time Code
    Gen Media Version               : 0
    Gen Flags                       : 0 0 0
    Gen Graphics Mode               : ditherCopy
    Gen Op Color                    : 32768 32768 32768
    Gen Balance                     : 0
    Text Font                       : System
    Text Face                       : Plain
    Text Size                       : 12
    Text Color                      : 0 0 0
    Background Color                : 0 0 0
    Font Name                       :
    Other Format                    : tmcd
    Format                          : Digital Camera
    Information                     : FUJIFILM DIGITAL CAMERA X-T3
    Movie Stream Name               : FUJIFILM MOV STREAM 0130
    Make                            : FUJIFILM
    Camera Model Name               : X-T3
    Modify Date                     : 2019:01:14 16:12:24
    Artist                          :
    Thumbnail Offset                : 985974
    Thumbnail Length                : 8447
    Copyright                       :
    Exposure Time                   : 1/100
    F Number                        : 4.0
    ISO                             : 640
    Sensitivity Type                : Standard Output Sensitivity
    Date/Time Original              : 2019:01:14 16:12:24
    Create Date                     : 2019:01:14 16:12:24
    Shutter Speed Value             : 1/100
    Exposure Compensation           : 0
    Metering Mode                   : Multi-segment
    Version                         : 0130
    Internal Serial Number          : FF02B4624018     Y54774 2018:08:28 930330111016
    Quality                         : NORMAL
    Sharpness                       : 0 (normal)
    White Balance                   : Kelvin
    Saturation                      : 0 (normal)
    Noise Reduction                 : 0 (normal)
    Fuji Flash Mode                 : Not Attached
    Flash Exposure Comp             : 0
    Focus Mode                      : Unknown (65535)
    Slow Sync                       : Off
    Picture Mode                    : Manual
    Shadow Tone                     : 0 (normal)
    Highlight Tone                  : 0 (normal)
    Grain Effect                    : Off
    Auto Bracketing                 : Off
    Blur Warning                    : None
    Focus Warning                   : Good
    Exposure Warning                : Good
    Film Mode                       : F0/Standard (Provia)
    Min Focal Length                : 18
    Max Focal Length                : 55
    Max Aperture At Min Focal       : 2.8
    Max Aperture At Max Focal       : 4
    Rating                          : 0
    Frame Rate                      : 25
    Frame Width                     : 4096
    Frame Height                    : 2160
    Lens Info                       : 18-55mm f/2.8-4
    Movie Data Size                 : 634417152
    Movie Data Offset               : 1050112
    Aperture                        : 4.0
    Avg Bitrate                     : 203 Mbps
    Image Size                      : 4096x2160
    Megapixels                      : 8.8
    Rotation                        : 0
    Shutter Speed                   : 1/100
    Thumbnail Image                 : (Binary data 8447 bytes, use -b option to extract)
    Light Value                     : 8.0
  8. Thanks
    Attila Bakos got a reaction from Stathman in Atomos Ninja V and Fuji X-H1   
    I finally figured out why I experienced problems with the LUT. An incorrect YCbCr->RGB conversion will result in values outside the 0-1 range. The LUT sees these values as 0 and 1 in Resolve, that's the reason for the inaccuracy. Premiere handles the LUT differently, there is no clamping there, and the results will be perfect, identical to using the DCTL version in Resolve. However it's possible the build a perfect LUT for Resolve as well, which will come in handy for non-Studio users. I actually built one, I plan to publish it alongside a video describing the problem in detail.
  9. Thanks
    Attila Bakos got a reaction from Prandi in Atomos Ninja V and Fuji X-H1   
    I finally figured out why I experienced problems with the LUT. An incorrect YCbCr->RGB conversion will result in values outside the 0-1 range. The LUT sees these values as 0 and 1 in Resolve, that's the reason for the inaccuracy. Premiere handles the LUT differently, there is no clamping there, and the results will be perfect, identical to using the DCTL version in Resolve. However it's possible the build a perfect LUT for Resolve as well, which will come in handy for non-Studio users. I actually built one, I plan to publish it alongside a video describing the problem in detail.
  10. Thanks
    Attila Bakos got a reaction from androidlad in Atomos Ninja V and Fuji X-H1   
    I finally figured out why I experienced problems with the LUT. An incorrect YCbCr->RGB conversion will result in values outside the 0-1 range. The LUT sees these values as 0 and 1 in Resolve, that's the reason for the inaccuracy. Premiere handles the LUT differently, there is no clamping there, and the results will be perfect, identical to using the DCTL version in Resolve. However it's possible the build a perfect LUT for Resolve as well, which will come in handy for non-Studio users. I actually built one, I plan to publish it alongside a video describing the problem in detail.
  11. Haha
    Attila Bakos got a reaction from kaylee in Penis camera   
    You're asking the guy who just so happens to have a gay porn actor as his profile picture
    I know, I know, how do I just so happen to know that... the URL of his picture is telling.
  12. Haha
    Attila Bakos got a reaction from AlexTrinder96 in Penis camera   
    You're asking the guy who just so happens to have a gay porn actor as his profile picture
    I know, I know, how do I just so happen to know that... the URL of his picture is telling.
  13. Haha
    Attila Bakos got a reaction from androidlad in Penis camera   
    You're asking the guy who just so happens to have a gay porn actor as his profile picture
    I know, I know, how do I just so happen to know that... the URL of his picture is telling.
  14. Like
    Attila Bakos got a reaction from androidlad in Atomos Ninja V and Fuji X-H1   
    @androidlad Upon further inspection I found out that the Rec709toRec601.cube LUT is not 100% accurate, sometimes it will be slightly off. This problem might be something that can't be fixed with a single LUT, or matrix. For a really accurate conversion transcoding seems to be the only way:
    ffmpeg -i INPUT.MOV -vf colorspace=all=bt709,scale=in_range=full:out_range=full -c:v prores_ks -profile:v 2 -c:a copy OUTPUT.MOV
    Just remember to switch ProRes to full range once it's imported.
     
  15. Like
    Attila Bakos got a reaction from androidlad in Atomos Ninja V and Fuji X-H1   
    That's why I believe that assumption is wrong and the data itself is different.
    EDIT: Forgot to tell you that I experimented with extracting the raw stream and inserting it into another container without any flags. In this case even Scratch shows the difference, so my theory seems to be correct.
    EDIT2: Or just use this script: ffmpeg -i INPUT.MOV -c copy -bsf:v hevc_metadata=matrix_coefficients=1 OUTPUT.MOV
    It only changes the matrix coefficients tag to BT.709, and immediately you can see a difference in Scratch. So it's respecting the tags.
  16. Thanks
    Attila Bakos got a reaction from thephoenix in Atomos Ninja V and Fuji X-H1   
    If you're a Resolve Studio user, you can try this DCTL, it does the same thing as the Rec709toRec601.cube mentioned earlier, but it won't clip values, and it's a bit more precise: https://www.dropbox.com/s/pm3nbyco6wg25kx/FujifilmColorFix.dctl?dl=1
  17. Like
    Attila Bakos got a reaction from webrunner5 in The peer-to-peer colour grading thread   
    Here's a quickie. A BT.2020-Rec.709 conversion, a curve to highlight the person, some vignette to darken everything else, Kodak 2383 D55 on 40%, slightly boosted saturation and desaturated shadows.


  18. Like
    Attila Bakos got a reaction from kye in The peer-to-peer colour grading thread   
    Here's a quickie. A BT.2020-Rec.709 conversion, a curve to highlight the person, some vignette to darken everything else, Kodak 2383 D55 on 40%, slightly boosted saturation and desaturated shadows.


  19. Like
    Attila Bakos got a reaction from mercer in The peer-to-peer colour grading thread   
    Here's a quickie. A BT.2020-Rec.709 conversion, a curve to highlight the person, some vignette to darken everything else, Kodak 2383 D55 on 40%, slightly boosted saturation and desaturated shadows.


  20. Thanks
    Attila Bakos reacted to BrunoCH in User LUT monitor SWIT CM-55C   
    Yes the waweform has three options : Luma, RGB, parade.
     
    swit 55 parade.mov
  21. Haha
    Attila Bakos got a reaction from keessie65 in Fuji X-T3 and X-T4 discussion   
    The name
  22. Haha
    Attila Bakos got a reaction from Kisaha in Fuji X-T3 and X-T4 discussion   
    The name
  23. Haha
    Attila Bakos got a reaction from kaylee in Fuji X-T3 and X-T4 discussion   
    The name
  24. Haha
    Attila Bakos got a reaction from thephoenix in Fuji X-T3 and X-T4 discussion   
    The name
  25. Thanks
    Attila Bakos got a reaction from BrunoCH in Fuji X-T3 and X-T4 discussion   
    Looks good, I use this phone holder until I get something better: https://m.aliexpress.com/item/32797019174.html?trace=wwwdetail2mobilesitedetail&spider=y&productId=32797019174&productSubject=Ulanzi-IRON-MAN-II-Aluminum-Metal-Smartphone-Tripod-Mount-with-Cold-Shoe-Mount-Cell-Phone-Tripod
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