Valid timecodes not parsed by VTTParser

[berndmoos]

In one of my sample files, VTT time codes look like this:

00:59.000 --> 01:23.000
VTTParser will throw an exception when reading the file. I think this is because it has not recognized this line as being a timecode line. It works fine when time code lines have hours, like so:

00:00:00.389 --> 00:00:07.910

As far as I can see from the specification, both notations should be valid.

The following lines should be changed accordingly:

subtitle/src/main/java/fr/noop/subtitle/vtt/VttParser.java

Line 94 in 04fdf39

!textLine.substring(13, 16).equals("-->")

subtitle/src/main/java/fr/noop/subtitle/vtt/VttParser.java

Line 109 in 04fdf39

!textLine.substring(13, 16).equals("-->")

[amentan]

use ffmpeg command: ffmpeg -i your_file.vtt your_file.srt