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-rw-r--r--src/js/plugins/previewThumbnails.js6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/js/plugins/previewThumbnails.js b/src/js/plugins/previewThumbnails.js
index 90e6226d..813bc47e 100644
--- a/src/js/plugins/previewThumbnails.js
+++ b/src/js/plugins/previewThumbnails.js
@@ -17,17 +17,17 @@ const parseVtt = vttDataString => {
if (!is.number(result.startTime)) {
// The line with start and end times on it is the first line of interest
const matchTimes = line.match(
- /([0-9]{2}):([0-9]{2}):([0-9]{2}).([0-9]{2,3})( ?--> ?)([0-9]{2}):([0-9]{2}):([0-9]{2}).([0-9]{2,3})/,
+ /([0-9]{2})?:?([0-9]{2}):([0-9]{2}).([0-9]{2,3})( ?--> ?)([0-9]{2})?:?([0-9]{2}):([0-9]{2}).([0-9]{2,3})/,
); // Note that this currently ignores caption formatting directives that are optionally on the end of this line - fine for non-captions VTT
if (matchTimes) {
result.startTime =
- Number(matchTimes[1]) * 60 * 60 +
+ Number(matchTimes[1] || 0) * 60 * 60 +
Number(matchTimes[2]) * 60 +
Number(matchTimes[3]) +
Number(`0.${matchTimes[4]}`);
result.endTime =
- Number(matchTimes[6]) * 60 * 60 +
+ Number(matchTimes[6] || 0) * 60 * 60 +
Number(matchTimes[7]) * 60 +
Number(matchTimes[8]) +
Number(`0.${matchTimes[9]}`);