Merge x265 without reencoding

[slobadaca]

I shoot 4K with Sony Xperia XZ Premium with x265. I will love to merge all those x265 videos without reencoding. Is it any software?
Can I make ultra HD bluray?

[tommy2010]

I believe this can be done with tsmuxer. Load your first source followed by clicking join for each consecutive file and select to mux either as ts, m2ts, bluray folder or ISO. Note that this won't work if your files are not all in the same format including resolution, fps and audio.

[Flitskikker]

I use this to edit x264 / x265 without re-encoding (mainly TV recordings), but it's paid...
https://www.videohelp.com/software/TMPGEnc-MPEG-Editor

You can try the trial first, though.

[slobadaca]

I will try TMPGEnc-MPEG-Editor. TSmuxer can't recognize x265.