After live recording finished, I'm unable to open the video. MediaInfo says FileExtension_invalid.

[GGhi2]

Info that might be helpful. It's a 19GB file, I wonder if it had problems due to size? I was able to sucessfully remux the .ts to mp4 using ffmpeg, but I'd like to know how to prevent this in the future. Thank you.

[cli][info] Found matching plugin twitch for URL https://www.twitch.tv/streamer
[cli][info] Waiting for streams, retrying every 30.0 second(s)
[cli][info] Available streams: audio_only, 160p30 (worst), 360p30, 480p30, 720p60, 1080p60 (best)
[cli][info] Opening stream: 1080p60 (hls)
[cli][info] Writing output to
F:\Tmp\folder\[2025-06-28-081630] deme THE REACTOR RETURNS. THEN END GAME LATER AT 5_30PM BST _ !ggsupps and !skinsmonkey use code DEME 327496162941.ts
[download] Written 19.03 GiB to F:… _ !ggsupps and !skinsmonkey use code STREAMER 327496162941.ts (7h17m48s @ 597.86 KiB/s)
[cli][info] Stream ended
[cli][info] Closing currently open stream...

MediaInfo

MPEG-4 (Base Media/Version 2): 19.0 GiB, 7 h 17 min
1 video stream: AVC
1 audio stream: AAC LC

FileExtension_Invalid: braw mov mp4 m4v m4a m4b m4p m4r 3ga 3gpa 3gpp 3gp 3gpp2 3g2 k3g jpm jpx mqv ismv isma ismt f4a f4b f4v

First video stream
6 000 kb/s, 1920*1080 (16:9), at 60.000 FPS, AVC (High@L4.2) (CABAC / 4 Ref Frames)

First audio stream
153 kb/s, 48.0 kHz, 2 channels, AAC LC

[bastimeyer]

Wrong repo. This is not relevant to Streamlink Twitch GUI. Your previous thread from April was also already irrelevant to this repo. Please read the project README.md before posting.

And it's not a Streamlink issue either. Twitch streams are using MPEG-TS transport streams, apart from the still in beta H265/AV1 streams which are using fragmented MPEG-4 containers. If your application you're trying to read your recording with is incapable of reading MPEG-TS, then you must remux the file first.