Announcement

Collapse
No announcement yet.

MJPEG 70mbits+ 1080p settings

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    #16
    I downloaded PappasArts MJPEG file and tried to analyze it with JPEGsnoop. This usually works very well and lets you see the actual MJPEG quantisation tables (which actually define the compression quality) used. But in this case JPEGsnoop gives a "Tables out of indexed range" error.

    Can anyone P L E A S E give me access to a few seconds of a GH1 720p MJPEG file with increased bitrate only? No scaling, 30 fps, as original as possible but with HIGH bitrate. I have no GH1.

    By the way the chroma subsampling seems to be still 4:2:0 despite the higher bit rate.

    JPEGsnoop: www.impulseadventure.com/photo/
    PappasArts MJPEG file: http://www.sendspace.com/file/1tigvj

    Comment


      #17
      Originally posted by Oedipax View Post
      I'm still getting caught up on this, but is it possible to record video in a squeezed fashion? Or use just part of the GH1's sensor? Would love to be able to record a smaller area of the GH1 sensor for 2X anamorphics, in order to get native 2.35:1 or 2.66:1 etc...
      Well the video in this Hi-Mbit rate mode is recorded squeezed like HDCAM 1440X1080. However I'm guessing your asking for selecting a 1:1 use of the sensor to match 2x anamorphic lenses. It doesn't do that. That would be a cool option though.

      For Updates: MIKOS • MLPappas on Twitter
      http://PAPPASARTS.WORDPRESS.COM
      http://TWITTER.COM/PAPPASARTS
      http://MIKOSarts.wordpress.com
      http://mikosarts2.wordpress.com/blog-page-2
      http://mikosarts2.wordpress.com
      http://MIKOSarts.COM
      Last edited by PappasArts; 11-29-2013, 04:23 PM.
      sigpic
      “The talent of an artist is never measured on how real they can create something, it’s on how much life they can give it”

      Comment


        #18
        Originally posted by Martin Koch View Post
        I downloaded PappasArts MJPEG file and tried to analyze it with JPEGsnoop. This usually works very well and lets you see the actual MJPEG quantisation tables (which actually define the compression quality) used. But in this case JPEGsnoop gives a "Tables out of indexed range" error.

        Can anyone P L E A S E give me access to a few seconds of a GH1 720p MJPEG file with increased bitrate only? No scaling, 30 fps, as original as possible but with HIGH bitrate. I have no GH1.

        By the way the chroma subsampling seems to be still 4:2:0 despite the higher bit rate.

        JPEGsnoop: www.impulseadventure.com/photo/
        PappasArts MJPEG file: http://www.sendspace.com/file/1tigvj
        Did you tried to contact JPEGSnoop author?
        It is actively developed, as I understand.
        for me it is very interesting to understand MJPEG inner workings, such as quantization tables.
        You can try to change MJPEG values and see at quantization tables yourself.

        Comment


          #19
          Hi pappas thankyou so much for showing some new settings.
          Would you be able to upload a short raw vid of 1440X1080 squeezed setting so I can have a play on my editing program?
          Still waiting for class 10 card in the post!

          Comment


            #20
            Originally posted by mimirsan View Post
            Hi pappas thankyou so much for showing some new settings.
            Would you be able to upload a short raw vid of 1440X1080 squeezed setting so I can have a play on my editing program?
            Still waiting for class 10 card in the post!

            I plan too for sure. I need to get something up. My Upload speed sucks; so If I do, I'll need to live it for awhile. Sometime this weekend is what I'm shooting for.



            For Updates: MIKOS • MLPappas on Twitter
            http://PAPPASARTS.WORDPRESS.COM
            http://TWITTER.COM/PAPPASARTS
            http://MIKOSarts.wordpress.com
            http://mikosarts2.wordpress.com/blog-page-2
            http://mikosarts2.wordpress.com
            http://MIKOSarts.COM
            Last edited by PappasArts; 11-29-2013, 04:24 PM.
            sigpic
            “The talent of an artist is never measured on how real they can create something, it’s on how much life they can give it”

            Comment


              #21
              Originally posted by PappasArts View Post
              I plan too for sure. I need to get something up. My Upload speed sucks; so If I do, I'll need to live it for awhile. Sometime this weekend is what I'm shooting for.



              Pappas
              Thanks!

              Comment


                #22
                Do we have all the settings in the new PTool 3.36 update? I can't find a few of them, are they called something else now?

                Pappas Settings:
                MJPEG 1280m Encoder settings.
                MJPEG 1280p width - input 1440
                MJPEG 1280p height - input 1080
                MJPEG 1280p Encoder width - input 2096
                MJPEG 1280p Encoder buffer - input 4821120
                QUALITY SETTINGS [ 384, 330, 300, 276 ]
                TABLE SETTINGS [ 24, 24, 24, 24
                Where do Encoder width & buffer go?

                PTool 3.36v2:

                Check out my short films on Vimeo

                Comment


                  #23
                  Just check MJPEG Encoder 1280m->1920

                  Comment


                    #24
                    Thanks Tester!
                    Check out my short films on Vimeo

                    Comment


                      #25
                      I can confirm that your settings with the squash works on verbatim class 6 card...no write errors recorded for 3 minutes...with bitrate peaking at 69mb....seems super stable!

                      Comment


                        #26
                        Originally posted by mimirsan View Post
                        I can confirm that your settings with the squash works on verbatim class 6 card...no write errors recorded for 3 minutes...with bitrate peaking at 69mb....seems super stable!
                        Great report back. I'm gonna try it out today, just not expecting playback in camera.

                        Really wish I had lens adapters right now, stuck with the Kit Lens currently. Doh.
                        Comet Color Page
                        Allow me: fanboy of great images.

                        Comment


                          #27
                          Originally posted by PappasArts View Post
                          Well the video in this Hi-Mbit rate mode is recorded squeezed like HDCAM 1440X1080. However I'm guessing your asking for selecting a 1:1 use of the sensor to match 2x anamorphic lenses. It doesn't do that. That would be a cool option though.

                          Pappas
                          Probably a long shot.. but concerning 2x anamorphic shooting, do think it'd be possible to hack the MJPEG 4:3 VGA mode with a higher bitrate (or does the current patch do this already?) and a frame size of 1440x1080? This mode uses the full 13mm height of the chip and would also eliminate most image cropping in post.

                          Either way, it's felt like Christmas morning for the past 3 days on here. Amazing work everyone!
                          ryancglover.com - filmmaker, cinematographer
                          HILLS GREEN - a feature film. USER FILMS thread.
                          yellyfish films

                          Comment


                            #28
                            Originally posted by ryancglover View Post
                            Probably a long shot.. but concerning 2x anamorphic shooting, do think it'd be possible to hack the MJPEG 4:3 VGA mode with a higher bitrate (or does the current patch do this already?) and a frame size of 1440x1080? This mode uses the full 13mm height of the chip and would also eliminate most image cropping in post.

                            Either way, it's felt like Christmas morning for the past 3 days on here. Amazing work everyone!
                            Hey! This is a GREAT idea, actually. I dunno if tester can actually do it, but at the rate he's going, I wouldn't even put it past him.

                            Throw this request in the main thread to see if it's possible or direct him to this post.
                            Comet Color Page
                            Allow me: fanboy of great images.

                            Comment


                              #29
                              Bloody fantastic idea

                              I would love 4x3 mode for its own sake, as well as with anamorphics in front. Academy ratio's no slouch!
                              Check out my short films on Vimeo

                              Comment


                                #30
                                Ive upped 2 videos showing the 1440x1080 setting.
                                http://vimeo.com/12513575
                                http://vimeo.com/12513188
                                Download raw footage to see proper quality!

                                Comment

                                Working...
                                X