Editing MKV bumpers?

[OTA 78]

I'm wanting to modify some atmos bumpers.  Basically cut some stuff out of the middle and put it back together.  I've tried using avidemux, but it relies on key frames and the video corrupts where I want to cut it due to this.  I've also tried blender, but it wants to modify the audio, unless I'm doing something wrong with the settings.  What programs do you guys use when you are creating your atmos bumpers from scratch?  Would they be able to edit a pre-existing one?

[OTA 78]

[Matt 120]

Did you ever find a solution to edit your Atmos bumpers?

[OTA 78]

I did not.  I just let it ride.

[MartinsVision 17]

if you just trying to cut things out try 
https://online-video-cutter.com/

[Matt 120]

What bumpers are you trying to edit?  Are they actual in Atmos our just about Atmos?

[OTA 78]

They are actually Atmos.  I was going to edit one of the longer ones to be shorter.  Can't recall which one it was, but it was a newer one.  I may not even have it anymore since demo-world.eu stopped hosting.

[Matt 120]

I'm not aware of anything that will allow you to edit the Atmos files.  It is a crazy process to make them and they require a license fee, which is why you don't see any editors.  Most things will convert it to 7.1 or whatever.

Let me know if you find the file(s) and I'll be happy to help out in any way I can.