[Deepak-negi11]

Repro instructions:

Needs #2415 (on master --stream can't be used with a file at all).
Sample: Closed Caption EIA.ts

./ccextractor --stream 3 "Closed Caption EIA.ts"

Command (with #2415)	Before	After
--stream 2 small.scc	never exits	exits about 2 s after the file stops growing
--stream 3 "Closed Caption EIA.ts"	exits at once, the timeout is ignored	waits 3 s for more data, then exits
normal run, no --stream	unchanged	unchanged

---

I found this while testing #2415.

Problem

The C code keeps the --stream timeout in seconds. The Rust Options keep it as a Timestamp. Two places mixed up the units:

1. copy_to_rust (common.rs) read the C seconds as milliseconds, so 3 seconds became 3 ms.
2. sleepandchecktimeout (file.rs) compared a time in seconds with start + live_stream.millis(), so a 2-second timeout became 2000 seconds.

So the timeout was either ignored or about 1000 times too long, depending on the input.

Fix

Use seconds in both places. copy_from_rust already wrote seconds, so the round trip now matches.

Testing

• 2 new tests: a C → Rust → C round trip of the timeout, and sleepandchecktimeout with a timeout that has already passed. Each one fails if its half of the fix is removed.
• cargo test (428 passed), cargo fmt --check, cargo clippy -- -D warnings.
• The end-to-end runs in the table above.

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