[FFmpeg-user] How can I transcode a video to 800x480, non-square pixels?

[John Klimek]

I've purchased a car stereo that lists the following dimensions:

6.95 in diagonal (156.6 mm x 81.6 mm)
800x480, 16:9 aspect ratio

If the pixels were square, that would be 15:9 but the physical dimensions
are definitely 16:9.

If I have a video encoded at 720p or 1080p and I want to convert it to use
the entire 800x480 display and the non-square (?) pixels, how can I do this
with FFmpeg?

[Dave P]

Post by John Klimek
If I have a video encoded at 720p or 1080p and I want to convert it to use
the entire 800x480 display and the non-square (?) pixels, how can I do this
with FFmpeg?

-filter:v scale=800:480,setdar=16/9

[John Klimek]

Thanks! Does the input resolution or aspect ratio matter?

Post by Dave P

Post by John Klimek
If I have a video encoded at 720p or 1080p and I want to convert it to

use

Post by John Klimek
the entire 800x480 display and the non-square (?) pixels, how can I do

this

Post by John Klimek
with FFmpeg?

-filter:v scale=800:480,setdar=16/9
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[Jacky]

hi,all:
i compile ffmpeg with dshow on windows using MinGW.
the config: --configure --enable-indevs, but there is no dshow in the configure result.
How ca

[Roger Pack]

It should "just work" if you have the dshow headers:

http://betterlogic.com/roger/2013/09/directx-headers-for-mingw/

Post by Jacky
i compile ffmpeg with dshow on windows using MinGW.
the config: --configure --enable-indevs, but there is no dshow in the configure result.
How can i compile ffmpeg with dshow??
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