The following lines were added (+) and removed (-):
The Samsung MX20 does not tag its 16:9 files with the correct DAR. It is not desirable to re-encode because that causes quality loss. You can use a utility called mp4box which is part of GPAC to correct the DAR tagging without re-encoding. The source file will be replaced (corrected.)The 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.)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. ''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.'' 40:33 82.50% 872x480 1.8167:1[[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. <small>[http://www.labdv.com/learning/dv_basics/aspect_ratio-en.html 3. Digital video : the pixel ratio] 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. 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> 40:33 82.50% 872x480 1.8167:1 (40:33.02752294)The correct value for standard is 54:45. mp4box.exe -par 1=54:45 homemovie.mp4 '''mp4box.exe -par 1=54:45 homemovie.mp4'''Download 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 ffmpegVLC 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== Interlaced Video Issue ==https://superuser.com/questions/610618/double-deinterlace-with-full-motion-ffmpeg-yadif-50i-50p-60i-60p