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Samsung SC-MX20R Digital Camcorder

2,870 bytes added, 03:20, 16 June 2019
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For users of the Samsung SC-MX20, this little program fixes the wide screen problem and gives the option to convert video files to a Windows Movie Maker friendly format.=== Recommended Fix: mp4box ===* http://sourceforge.net/projects/thefix/Credit to: Allen AndersenThe Samsung MX20 does not tag its 16:9 files with the correct [[Display Aspect Ratio]]. It is not desirable to re-encode because that causes quality loss.  You can use a utility such as mp4box which is part of GPAC to correct the Display Aspect Ratio tagging without re-encoding.  The source file will be replaced (corrected.)This fix does not work well, produces a much larger file.  Re-encodes is lossy and inefficient.''Note: mp4box has mutli platform versions, however, installation on Linux can be problem due to required dependencies.  A utility that is a Video Aspect Ratio Converter is suitable, it need not be mp4box specifically.''another fix:[[Display Aspect Ratio]] (DAR): For US sold models, the ratio should be 40:33.  Another source says NTSC widescreen is 864x480, which means the proper ratio for NTSC widescreen video should be 864:720, which simplifies to 54:45.  See: [http://mbppg.com/info/encode.html SC-MX20 Video Encoding for Better Video Quality]<small>[http://www.labdv.com/learning/dv_basics/aspect_ratio-en.html 3. Digital video : the pixel ratio]another fix:The legacy digital representation of computer 4:3 NTSC has a format of 640x480 pixels. This is a natural choice, if you consider that 480 lines makes 480 pixels vertically, and 4:3 aspect makes 480 x 4/3 = 640 pixels horizontally. However, DV cameras as well as most digital video equipment work with a 720x480 frame size. Therefore, if you considered your picture elements to have a square aspect ratio (1:1) in analog format, your digitised frame now has a pixel ratio of 0.888 (640/720). You can view it that way: it takes 720 pixels with a 0.88 ratio to equate 640 pixels with a 1.00 ratio. Following the same idea, 16:9 NTSC has a pixel ratio of 1.20 (864/720). The "864" value comes from taking 460 x 16/9 = 853.3 and rounding to 864, since any line must have a number of pixels that can be divided by 16.The Samsung MX20 does not tag its 16:9 files with the correct DAR. To fix this without a re-encode use Yamb (or mp4box).This mismatch between analog and digital pixel ratios, present on most equipment, requires some precautions be taken if one wants to preserve the exact aspect ratio of images. Circles on TV appear like ellipses on a computer screen and vice-versa! To illustrate the problem, consider the following example: you want to scan some photographs and transfer them to stills in DV format. If you're thinking of just scanning the images and resize to 720x480 (DV frame size), you're wrong. You must first crop the images to a 4:3 aspect ratio, then resize them, which will stretch them a little, but this way, they will appear correct on your TV !</small>DAR: For US sold models, the ratio should be 40:33.  Another source says NTSC widescreen is 864x480, which means the proper ratio for NTSC widescreen video should be 864:720, which simplifies to 54:45.    40:33  82.50%  872x480                        1.8167:1     (40:33.02752294)   40:33  82.50%  872x480                        1.8167:1mp4box and use this batch file :The correct value for standard is 54:45. process single video file command example:  '''mp4box.exe -par 1=54:45 homemovie.mp4''' You can use a batch file to process a directory of video files  "E:\Program Files\Yamb\mp4box.exe" -par 1=54:45 %1  "C:\Program Files\GPAC\mp4box.exe" -par 1=54:45 %1Replace the path to mp4box as appropriate. Then just drag and drop files to be fixed onto the bat file.The batch file script is based on the example from this source: https://youtu.be/rg4pc2rQ9Rwsource: https://youtu.be/rg4pc2rQ9RwDownload mp4box GPAC from:* http://www.videohelp.com/software/MP4Box* http://gpac.wp.mines-telecom.fr/ === Recommended Fix Ubuntu / Mint: ffmpeg === Option #2 - This works better on newer Linux Ubuntu / Mint systems --- just use ffmpeg VLC reports 720 x 482 using Display Resolution 720x480 which results in a horizontally squished video.   If you manually change the aspect ratio in VLC to 16:9 you will see a video at exactly 853x482.  ffmpeg -i homemovie.mp4 -aspect 85:48 -c copy homemovie-fixed.mp4 === Not Recommended: Allen Anderson Fix === For users of the Samsung SC-MX20, this little program fixes the wide screen problem and gives the option to convert video files to a Windows Movie Maker friendly format.* http://sourceforge.net/projects/thefix/ Credit to: Allen Andersen This fix does not work well, produces a much larger file.  Re-encodes is lossy and inefficient. === Other Fix Options === another fix: See: [http://mbppg.com/info/encode.html SC-MX20 Video Encoding for Better Video Quality]mp4box (yamb is the gui).  == Interlaced Video Issue ==https://superuser.com/questions/610618/double-deinterlace-with-full-motion-ffmpeg-yadif-50i-50p-60i-60p
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