src/third_party/web_platform_tests/webvtt/webvtt-file-format-parsing/webvtt-file-parsing/support/timings-negative.vtt

WEBVTT

00:00:00.000 --> 00:00:00.000
{"endTime":0}

00:00:01.000 --> 00:00:00.999
{"startTime":1, "endTime":0.999}

00:01:00.000 --> 00:00:59.999
{"startTime":60, "endTime":59.999}

01:00:00.000 --> 00:59:59.999
{"startTime":3600, "endTime":3599.999}