How do I modify scaled size of an H.264 encoded video?

[kfitfk]

My workmate sent me an H.264 encoded MP4 video file.

When I use Get Info in macOS, it's dimensions is 1125x2436. However, if I open the file in Quicktime Player or VLC and check the metadata, they all display 1126x2436 instead.

Also ffprobe says it's yuv420p, 1126x2436. Check the image below.


[Attachment 50604 - Click to enlarge]

I found an app called Subler earlier. It displays the video's metadata as shown below.


[Attachment 50605 - Click to enlarge]

After I generate a video using ffmpeg of size 1126x2436, how do I make the system display 1125x2436 without changing the real dimension? I'm looking for a tool which can do this in Linux command line.

I know this sounds a bit weird, but my client requests that dimension because the iPhone X's screen resolution is 1125x2436 and he wants the exact fit.

Any ideas? Thanks.

[jagabo]

Set the SAR to 1125:1126. Or DAR to 1125:2436.

[kfitfk]

Set the SAR to 1125:1126. Or DAR to 1125:2436.

Thanks for pointing out the properties.

When I directly set

-vf setsar=sar=1125/1126

or

-vf setdar=dar=1125/2436

using ffmpeg, the output file still says dimension 1126x2436 or 1124x2436.

However, I can also use mlt(qmelt) in my case. By adding

sample_aspect_num="1125" sample_aspect_den="1126" display_aspect_num="1125" display_aspect_den="2436"

to the <profile /> of the XML, the result is exactly what I want.