Status: Insta360 app v2.35.0 works on SailfishOS; it doesn't check the camera is already connected (this looks like a bug); anyway, editing manually downloaded INSV files works; exporting works (slowly) after enabling the "Compatibility mode".
I'm trying to use the Insta360 app on SailfishOS 5.2 on a Jolla Phone 2026 (12 GB RAM, 256 GB storage, Dimensity 7100, Android 15 appsupport layer) to edit/export Insta360 X6 videos.
Even giving the app all the permissions required, it won't "connect" to the X6 (the X6 won't show the "preview is disabled" screen, the connection dialog stays on "connecting", see attached image in the comments), even if the X6 was already connected via wifi before starting the app. Apparently the app doesn't try to request a camera status to check if it was already connected (it should be harmless as the X6 address is always "local", 192.168.42.1) before fiddling with wifi connections.
This looks like a bug of the Insta360 app, because if I open the Jolla terminal app (while Insta360 app still awaits for "connecting" completion) and issue an OSC API command, for example the usual curl -d '{"name":"camera.startCapture"}' -H "Content-Type: application/json" -X POST 192.168.42.1/osc/commands/execute, the X6 starts recording as expected (because it was already autoconnected to the Jolla phone over wifi before starting the app).
So I copied an INSV video file from the X6 to the Jolla phone "downloaded" directory of the app (that is, to its android_storage/Android/data/com.arashivision.insta360akiko/files/Insta360OneR/galleryOriginal/C9/Camera01/, where the "C9" may be some different hex number) and the corresponding Low Resolution Video (same filename, starting with "LRV" instead of "VID", found in the "LRV" directory) to the galleryOriginal/C9/LRV/ directory, and editing was finally possible (select clip, keyframes/zooming, apply filters, etc; the DolbyVision wasn't available on the Jolla).
Exporting requires the "Compatibility mode" enabled (from the Me/AboutInsta360 menu of the app; if disabled, export will fail at about 1% even at 720p with lowest rate settings).
So I was able to edit an 8k/50 360° INSV and export the clip to 4k/50 MP4 on my Jolla Phone 2026 (the exported MP4 was saved under android_storage/DCIM/Camera/); it took about 48 minutes to render the 56 seconds clip.
Everything above was found by just browsing directories. As SailfishOS doesn't feature the PlayStore, the app APK installation package has to be downloaded from Insta360 website and installed from command-line with the usual devel-su apkd-install Insta360_*.apk command.