[FFmpeg-user] Crop, Scale, Pad without distortion

[Carl Eugen Hoyos]

Am Mo., 27. Jan. 2020 um 04:28 Uhr schrieb Hans Carlson <forbyta at gmx.com>:
>
> On Mon, 27 Jan 2020, Carl Eugen Hoyos wrote:
>
> > Am Mo., 27. Jan. 2020 um 03:27 Uhr schrieb Hans Carlson <forbyta at gmx.com>:
> >
> >> Is 16/9 the correct value for setdar since that's what I want it to end
> >> up to be?
> >
> > Apparently not but it is what you told us you'd like. (I did not
> > calculate myself)
>
> OK... perhaps I don't know WHAT dar I want.  I plan to concat this video
> to some others (using concat protocol or demuxer) and the other videos
> have a DAR of 16:9, eg:
>
>    Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, top first), 720x480 [SAR 32:27 DAR 16:9], Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
>
> So, based on that, I assumed it would be a good idea to match the aspect
> ration (720x480) and the DAR.

Does it help if you scale=-1:480 ?

Carl Eugen