8 Replies Latest reply on Nov 28, 2011 6:57 AM by Nash_John

    How to fix horizontal banding? (screenshot attached)

    Djinn2521

      I just used Adobe Premiere Elements 8 to render a video using the DVD-NTSC preset* (no custom settings), and the resulting video shows considerable banding on light/dark edges, as shown below (and enlarged on the left).  What "advanced" setting(s) are most useful in correcting this sort of issue?

       

      Any info would be most appreciated.

       

       

      * Adobe Premiere Elements 8 > Share > Personal Computer > MPEG > NTSC DVD Standard

      http://i52.tinypic.com/vragbp.jpg

        • 1. Re: How to fix horizontal banding? (screenshot attached)
          the_wine_snob Level 9

          What is your source footage, and what is your Project Preset?

           

          That looks like Interlacing and Field Order issue, but could be MPEG artifacting. Knowing the source footage, and the Project's Preset, might point to which it is (or something else), and then can help others suggest a fix.

           

          Good luck,

           

          Hunt

          1 person found this helpful
          • 2. Re: How to fix horizontal banding? (screenshot attached)
            Djinn2521 Level 1
            1. The project preset is NTSC > AVCHD > Full HD 1080i 30.  I recorded the original at 1920x1080 resolution, then decided that the subject material didn't justify keeping the full resolution, so I figured I'd used APE8's NTSC DVD preset to knock it down to something more reasonable.
            2. When I used APE8 to import the video directly from the camera, the video was split into five files - probably to keep the files under 2GB.  The MediaInfo data below was pulled from one of those files.

             

            General
            ID/String                        : 0
            CompleteName                     : D:\Temp\PS8-TempVideo\2010 12 02 005.MTS
            Format                           : BDAV
            Format/Info                      : Blu-ray Video
            FileSize/String                  : 1.98 GiB
            Duration/String                  : 16mn 30s
            OverallBitRate/String            : 17.2 Mbps
            OverallBitRate_Maximum/String    : 18.0 Mbps

            Video
            ID/String                        : 4113 (0x1011)
            MenuID/String                    : 1 (0x1)
            Format                           : AVC
            Format/Info                      : Advanced Video Codec
            Format_Profile                   : High@L4.0
            Format_Settings_CABAC/String     : Yes
            Format_Settings_RefFrames/String : 2 frame2
            Format_Settings_GOP              : M=1, N=30
            CodecID                          : 27
            Duration/String                  : 16mn 30s
            BitRate_Mode/String              : VBR
            BitRate/String                   : 16.2 Mbps
            BitRate_Maximum/String           : 16.0 Mbps
            Width/String                     : 1920 pixel3
            Height/String                    : 1080 pixel3
            DisplayAspectRatio/String        : 16:9
            FrameRate/String                 : 29.970 fps3
            ColorSpace                       : YUV
            ChromaSubsampling                : 4:2:0
            BitDepth/String                  : 8 bit3
            ScanType/String                  : Interlaced
            ScanOrder/String                 : TFF
            Bits-(Pixel*Frame)               : 0.261
            StreamSize/String                : 1.87 GiB (94%)

            Audio
            ID/String                        : 4352 (0x1100)
            MenuID/String                    : 1 (0x1)
            Format                           : AC-3
            Format/Info                      : Audio Coding 3
            Format_Settings_ModeExtension    : CM (complete main)
            CodecID                          : 129
            Duration/String                  : 16mn 30s
            BitRate_Mode/String              : CBR
            BitRate/String                   : 256 Kbps
            Channel(s)/String                : 2 channel2
            ChannelPositions                 : Front: L R
            SamplingRate/String              : 48.0 KHz
            BitDepth/String                  : 16 bit3
            Video_Delay/String               : -582ms
            StreamSize/String                : 30.2 MiB (1%)

            Text
            ID/String                        : 4608 (0x1200)
            MenuID/String                    : 1 (0x1)
            Format                           : PGS
            CodecID                          : 144
            Duration/String                  : 16mn 29s
            Video_Delay/String               : -67ms


            • 3. Re: How to fix horizontal banding? (screenshot attached)
              Steve Grisetti Adobe Community Professional

              When you started your Premiere Elements project,did you select the preset for AVCHD video?

              • 4. Re: How to fix horizontal banding? (screenshot attached)
                Djinn2521 Level 1

                Yes; the project preset is NTSC > AVCHD > Full HD 1080i 30.

                • 5. Re: How to fix horizontal banding? (screenshot attached)
                  Steve Grisetti Adobe Community Professional

                  If you've selected the correct project preset, the DVD should play just fine when you play it on your TV and your standalone DVD player.

                   

                  The comb effect is the result of interlacing -- which TVs use and computers do not. A DVD is designed to be played on a TV, where you should not see this interlacing since it is part of the way your TV draws a video frame.

                  • 6. Re: How to fix horizontal banding? (screenshot attached)
                    Djinn2521 Level 1

                    I do not beleive that this is the case.  I played the video (from which I generated the screenshot in my original post) on my television set.  I used a digital stillcamera on a tripod to take an image of the television screen, and you can still clearly see the same horizontal banding... if necessary, scroll the image so you can see the speaker's left shoulder for the most visible aspect of the effect.

                    http://i54.tinypic.com/316b783.jpg

                    • 7. Re: How to fix horizontal banding? (screenshot attached)
                      Steve Grisetti Adobe Community Professional

                      This shouldn't happen, if you are using the correct project preset for your video.

                       

                      When you place your video on the timeline, is there a red line above it? There should not be a red line above your clips until you add a transition or effect to them.

                       

                      Also, when you output your DVD, did you use the standard output preset or did you customize it?

                       

                      If you worked with these standard presets and you didn't do any delinterlacing or changing of the field options on your own and you're still getting a comb effect, then something isn't working as it should.

                       

                      One possible solution is to export your project using Share/Computer/AVI to save it as an AVI.

                       

                      Then open a new project, using the standard DV setup, place your finished AVI on the timeline and output your DVD from there.

                      • 8. Re: How to fix horizontal banding? (screenshot attached)
                        Nash_John Level 3

                        Users who are using PrE 8 or PrE9, should note that this interlacing issue was a problem with PrE 8 ans PrE 9, and is now fixed with PrE 10

                         

                        The actual problem was that in versions earlier to 10, PrE always took the interlaced/progressive setting from Project Preset rather than the preset used for Export.

                        For such users, if you want to avoid interlacing in output, then please select a Progressive project setting which best matches your files and also use a progressive preset for output.