Help about changing aspect ratio of .mp4 without re-encoding using mp4box

[zakk]

I've got the following .mp4 file :

MediaInfo screenshot:


and it has wrong aspect ratio, as you may see, 3.115 : 1
So I'd like to permanently change it to 2.35 : 1
(that's how I make it viewed correctly in mpc-hc: Video>Video frame>Override Aspect Ratio>235:100)
without re-encoding it.

I've read this post mentioning mp4box.
I've tried following it but without success.

Please help.

[Baldrick]

1280/544 is 2.35 pixel aspect ratio. So try change the par value to 1:1

2.35 = 1280/ 544 * 1/1

mp4box -add inputfile.mp4#1:par=1:1 -add inputfile.mp4#2 output.mp4

[zakk]

Thanks a lot for your help!!
It worked.