> On Mar 1, 2017, at 12:05 AM, Carl Eugen Hoyos <ceffm...@gmail.com> wrote: > > 2017-02-28 11:15 GMT+01:00 Rick Corteza <rickcort...@gmail.com>: >> >>> On Feb 27, 2017, at 5:11 PM, Carl Eugen Hoyos <ceffm...@gmail.com> wrote: >>> >>> 2017-02-27 5:15 GMT+01:00 Rick Corteza <rickcort...@gmail.com>: >>> >>>> Prior to joining files with cat I often convert them using >>>> ffmpeg -i inputFile -target ntsc-dvd -qscale 5 outputFile >>>> to make them similar quality before joining. >>> >>>> The problem with doing this is often the aspect ratio even >>>> if I use the -aspect flag. >>> >>> Please elaborate. > >> Here is a better explanation: >> >> Original file - http://www.filedropper.com/original_5 >> <http://www.filedropper.com/original_5> >> Converted file - http://www.filedropper.com/test_198 >> <http://www.filedropper.com/test_198> >> >> Output: >> >> MacBook:~ mahalko$ /Users/mahalko/Desktop/ffmpeg >> -i /Users/mahalko/Desktop/original.mp4 >> -target ntsc-dvd -aspect 464:640 -qscale 5 >> /Users/mahalko/Desktop/test.vob > > Target ntsc-dvd implies an output file that (closely) follows a certain > specification (that of ntsc dvds) to make sure dvd players can play > the file. This specification includes allowed resolutions and aspect > ratios. > The aspect option has no effect in your command line because you > requested a dvd-compatible file. The output video looks different > than the input video because that's what you requested on the > command line when specifying dvd-compatibility. > > I don't understand what you are trying to do so I have not many > suggestions: If you need dvd output, you should decide how the > video is supposed to look on your tv and (likely) add borders with > the pad filter. > If all you want is concatenation, dvd is not the right format (mpegts > may be) unless all your videos have ntsc resolution and aspect > ratio. > >> ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers > > For future questions, please remember that only current FFmpeg git > head is supported on this mailing list. This is even more true for osx > where no distribution supports shared libraries and therefore no > release support exists at all. > > Carl Eugen
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