2017-02-28 11:15 GMT+01:00 Rick Corteza <[email protected]>: > >> On Feb 27, 2017, at 5:11 PM, Carl Eugen Hoyos <[email protected]> wrote: >> >> 2017-02-27 5:15 GMT+01:00 Rick Corteza <[email protected]>: >> >>> 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 _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
