run_ltx reported failure by yielding a string, which is why LTX had no API.
run() is the core underneath: keyword arguments named as video_run.run names
them, a VideoResult back, VideoError out with 499 for an interrupt. The lock,
progress and summary stay in the adapter, whose signature is unchanged since
callers bind to it by keyword. Failure now closes the processing object and
deactivates networks, which abort never did.
CalamitousFelicitousness
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