Nightly AppImages since 20260414 fail on open of recorded TV files .ts and .m2t

[mozbug]

Regular x86_64 and legacy x86_64 AppImages from 20260414 through the current 20260516 fail on open of recorded TV files .ts and .m2t. Regular AppImages were tested on Ubuntu 2604. Legacy AppImages were tested on Linux Mint 22.3 (Ubuntu 2404 base).

I have been recording television programs for years on my Hauppauge HVR2255 (creates .ts) and Hauppauge WinTV-quadHD (creates .m2t). AppImage 20260411 is the last to successfully open these files.

I can provide a sample 1 minute recorded TV file and a terminal log of the failure on my website, but it is 100% reproducible ... what else do you need?

https://sanfransysco.com/pub/avidemux/test_20260524_2107.m2t 95MB
https://sanfransysco.com/pub/avidemux/avidemux_terminal_log 47kB

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