Process up to eight chunks concurrently by default and add --jobs 1..64,
with --jobs 1 retaining sequential operation. Give each worker separate
encoding and request files, release payloads after completion, and merge
responses by original chunk index regardless of completion order.
Use a bounded worker scheduler that handles jobs finishing before wait is
called. Stop scheduling on an observed worker failure and terminate worker
process groups on failure or interruption before removing temporary files.
Include jobs interrupted between launch and scheduler registration in cleanup.
Preserve all-or-nothing stdout for both text and SRT output.
Document the Bash 5.1 requirement, concurrency option, resource usage, and
limits of cancelling requests already accepted by a provider.
Test Plan:
- python3 -B -m unittest -v: all 52 tests passed.
- Mocked provider tests verified eight concurrent requests by default,
configurable limits, rolling worker replacement, isolated payloads,
ordered text, and identical sequential/parallel SRT output.
- Verified immediate encoder failure, concurrent API failure, SIGINT and
SIGTERM, child-process cancellation, cleanup, and no partial stdout.
- bash -n transcribe, ./transcribe --help, and
git diff --cached --check: passed.
- No live provider request; credentials are unavailable in this environment.
ddidderr
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