Wrong Aspect ratio with SD material

[Lilien]

Hello,
I cut anamorphic 16:9 SD PAL (720*576) DVB TS-streams with Avidemux (up to v2.7) but found that the aspect ratio is not correctly handled.
Properties window shows that the video file is 16:9, but it's displayed with 4:3 aspect ratio and even more disturbing it's also saved as 4:3.
There is no problem with HD material, but for every 16:9 SD material I have to manually force the MKV muxer to save with 1024 pixel display width.
Please have a look at the attached screenshot to see an example.
Does this qualify as a bug that can be fixed?  Any help would be very appreciated.

Thanks for the otherwise handy program and best regards!

[eumagga0x2a]

The display always uses square pixels, this is by design. Yes, you must force display width when using the MKV muxer.

[Jan Gruuthuse]

SD can have for certain display formats  either aspect ratio of 4:3 or 16:9, thanks to PAL or NTSC era
If you have other sized anamorphic content:
Display width would be the 1st column of Square Pixel Frame Size:

[fish]

When I am editing DBT TS files I use 'Mpeg TS Muxer ff' output mode. The 16:9 files display as square pixels in Avidemux but the file, when output, plays correctly as 16:9. I'm still on v2.6.
I've just tried a quick edit using 'mkv muxer' output and the resulting file plays at the wrong display ratio, you need to use 'Mpeg TS Muxer ff' output mode.