Author Topic: Wrong Aspect ratio with SD material  (Read 128 times)

Lilien

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Wrong Aspect ratio with SD material
« on: September 02, 2017, 09:07:46 PM »
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!
« Last Edit: September 02, 2017, 09:09:41 PM by Lilien »

eumagga0x2a

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Re: Wrong Aspect ratio with SD material
« Reply #1 on: September 02, 2017, 09:56:41 PM »
The display always uses square pixels, this is by design. Yes, you must force display width when using the MKV muxer.

Jan Gruuthuse

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Re: Wrong Aspect ratio with SD material
« Reply #2 on: September 03, 2017, 05:52:13 AM »
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

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Re: Wrong Aspect ratio with SD material
« Reply #3 on: September 06, 2017, 07:52:11 PM »
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.
« Last Edit: September 06, 2017, 07:58:52 PM by fish »