Simple Screen Recorder by default uses mkv whereas Youtube and Odysee.com don’t support mkv.
GIMP and Krita save the updated image in some forgettable format and not jpg or png. It’s a pain in the Jazz converting these things and uploading it to reddit/imgur or sending it to friends who aren’t using Linux.
Most applications use .tax.gz or something for creating a compressed file , you can’t open those damn files on android.
I have experienced this incompatibility several times, but these are the ones I remember right now, I am pretty sure more avid users have encountered this thousands of times in different applications. I love Linux, but why can’t we use file extensions which are most supported? I mean, I checked, .zip is opensource, I could have understood if it wasn’t and we used some open source alternative, but this is creating resistance in linux usage which isn’t really needed. We don’t need the user experience to be bad and this makes it bad.
Also, you might say, “hey don’t be lazy, just click on jpg every time you save an image through gimp” or “just make mp4 the default in simplescreenrecorder”, but this adds up pretty fast and you can’t ask every user to do unnecessary adjustments after they install applications. This has to stop!
Many of these are defaults dating back to the Unix days, particularly tar (tape archive) and gzip.
Krita (KRA), GIMP (XCF), and Photoshop (PSD) save files in a lossless internal format that preserves layers etc. Every time you open and save a jpg, it gets worse, and that’s not acceptable for professional use. If all you want is to crop/draw on images, something like KolourPaint is probably a better choice.
MP4 is/was patent encumbered depending on jurisdiction.