Negative start time

[BonkaBonka]

Hello,

I used Sushi to adjust some fansubs to my DVD rip and it works fantastically. So much effort saved! The only annoyance is that a Comment from the script gets set to a negative time which breaks pysubs2.

Some of the original script:

[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Comment: 0,0:00:05.00,0:00:25.00,Dialogue,,0000,0000,0000,,Shion no Ou Episode 1
Comment: 0,0:00:26.00,0:00:46.00,Dialogue,,0000,0000,0000,,Translated by Beloculus and Shirokaze





Dialogue: 0,0:03:19.33,0:03:23.88,Dialogue,Glasses Guy,0000,0000,0000,,That's Ishiwatari Shion. Her parents were murdered seven years ago.
Dialogue: 0,0:03:24.76,0:03:30.41,Dialogue,,0000,0000,0000,,Now Yasuoka, the 8th-dan professional kishi, is raising her as his adopted daughter, Yasuoka Shion.
Dialogue: 0,0:03:24.76,0:03:30.41,TL-note,,0000,0000,0000,,[kishi - shougi player; dan - professional rank]
Dialogue: 0,0:03:31.32,0:03:32.62,Dialogue,Guy2,0000,0000,0000,,She looks like she's doing well to me.
Dialogue: 0,0:03:33.49,0:03:37.26,Dialogue,,0000,0000,0000,,From looking at her, you'd never guess what she suffered.
Dialogue: 0,0:03:39.81,0:03:45.12,Dialogue,Glasses Guy,0000,0000,0000,,She was so shocked, she lost the ability to speak.
Dialogue: 0,0:03:53.59,0:03:55.11,Dialogue,OldD00d,0000,0000,0000,,You're early, Shion-chan!
...

The corresponding lines after Sushi:

[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:03:09.26,0:03:13.81,Dialogue,Glasses Guy,0000,0000,0000,,That's Ishiwatari Shion. Her parents were murdered seven years ago.
Dialogue: 0,0:03:14.69,0:03:20.34,Dialogue,,0000,0000,0000,,Now Yasuoka, the 8th-dan professional kishi, is raising her as his adopted daughter, Yasuoka Shion.
Dialogue: 0,0:03:14.69,0:03:20.34,TL-note,,0000,0000,0000,,[kishi - shougi player; dan - professional rank]
Dialogue: 0,0:03:21.25,0:03:22.59,Dialogue,Guy2,0000,0000,0000,,She looks like she's doing well to me.
Dialogue: 0,0:03:23.42,0:03:27.19,Dialogue,,0000,0000,0000,,From looking at her, you'd never guess what she suffered.
Dialogue: 0,0:03:29.74,0:03:35.05,Dialogue,Glasses Guy,0000,0000,0000,,She was so shocked, she lost the ability to speak.
Dialogue: 0,0:03:43.52,0:03:45.04,Dialogue,OldD00d,0000,0000,0000,,You're early, Shion-chan!
...
Comment: 0,-1:59:54.93,0:00:14.93,Dialogue,,0000,0000,0000,,Shion no Ou Episode 1
Comment: 0,0:00:15.93,0:00:35.93,Dialogue,,0000,0000,0000,,Translated by Beloculus and Shirokaze

There is a warning in the log but I'm not sure it's relevant:

Done reading WAV [Live-eviL]_Shion_no_Ou_-_01_[D9EA7B12]_(HD_1280x720_x264).mkv.sushi.wav in 0.258970022202s
Done reading WAV title00.mkv.sushi.wav in 0.300753831863s
WARNING: Events from 0:03:19.33 to 0:03:32.62 will most likely be broken!
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0:15:57.68-0:15:58.16: shift: -10.0200000000, diff: 0.0042637298
0:15:58.49-0:15:59.34: shift: -10.0200000000, diff: 0.0313785188
0:16:24.23-0:16:24.73: shift: -10.0191666667, diff: 0.0601536594
0:16:29.36-0:16:29.86: shift: -10.0190833333, diff: 0.0066142781
0:16:30.62-0:16:31.54: shift: -10.0190000000, diff: 0.0039308965
0:16:32.09-0:16:34.21: shift: -10.0189166667, diff: 0.0406668968
0:16:36.85-0:16:37.26: shift: -10.0188333333, diff: 0.0281934440
0:16:37.97-0:16:38.46: shift: -10.0187500000, diff: 0.0404690020
0:16:46.33-0:16:50.66: shift: -10.0185000000, diff: 0.0113125285
0:16:51.40-0:16:52.09: shift: -10.0184166667, diff: 0.0157139264
0:17:03.84-0:17:05.60: shift: -10.0180000000, diff: 0.0060796263
0:17:06.15-0:17:08.46: shift: -10.0179166667, diff: 0.0084399357
0:17:12.60-0:17:18.95: shift: -10.0177500000, diff: 0.0311517902
0:17:19.84-0:17:22.26: shift: -10.0175833333, diff: 0.0028558623
0:17:22.26-0:17:26.32: shift: -10.0174166667, diff: 0.0245140456
0:17:26.83-0:17:29.49: shift: -10.0172500000, diff: 0.0253188629
0:17:30.43-0:17:32.93: shift: -10.0171666667, diff: 0.0329287946
0:17:33.70-0:17:34.46: shift: -10.0170833333, diff: 0.0072095753
0:17:36.76-0:17:38.15: shift: -10.0170000000, diff: 0.0119782500
0:17:39.01-0:17:40.60: shift: -10.0169166667, diff: 0.0165681001
0:17:42.01-0:17:43.69: shift: -10.0168333333, diff: 0.0097501129
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0:17:46.01-0:17:46.90: shift: -10.0167500000, diff: 0.0035492375
0:17:48.65-0:17:55.69: shift: -10.0165833333, diff: 0.0390662253
0:17:56.78-0:18:01.44: shift: -10.0163333333, diff: 0.0372110419
0:18:10.97-0:18:12.22: shift: -10.0160000000, diff: 0.0070439945
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0:18:15.36-0:18:17.52: shift: -10.0159166667, diff: 0.0143903149
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0:18:25.12-0:18:26.73: shift: -10.0156666667, diff: 0.0139098661
0:18:27.44-0:18:30.09: shift: -10.0155000000, diff: 0.0148578677
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0:18:50.17-0:18:51.63: shift: -10.0148333333, diff: 0.0173311215
0:18:52.02-0:18:52.88: shift: -10.0147500000, diff: 0.0131832510
0:18:53.16-0:18:55.21: shift: -10.0147500000, diff: 0.0160423443
0:19:04.46-0:19:05.29: shift: -10.0144166667, diff: 0.0055841194
0:19:05.90-0:19:09.73: shift: -10.0143333333, diff: 0.0177655090
0:19:10.26-0:19:11.24: shift: -10.0142500000, diff: 0.0128555167
0:19:11.71-0:19:12.47: shift: -10.0141666667, diff: 0.0115818093
0:19:12.98-0:19:14.15: shift: -10.0141666667, diff: 0.0034496426
0:19:15.68-0:19:18.03: shift: -10.0140833333, diff: 0.0252406541
0:19:19.68-0:19:22.67: shift: -10.0140000000, diff: 0.0367866270
0:19:24.22-0:19:28.56: shift: -10.0137500000, diff: 0.0403634533
0:19:30.62-0:19:33.29: shift: -10.0136666667, diff: 0.0130973579
0:19:34.28-0:19:37.25: shift: -10.0135000000, diff: 0.0063206381
0:19:38.06-0:19:39.13: shift: -10.0134166667, diff: 0.0102590453
0:19:39.85-0:19:41.95: shift: -10.0134166667, diff: 0.0065645664
0:20:40.88-0:20:42.26: shift: -10.0115000000, diff: 0.0197005048
0:20:50.70-0:20:52.12: shift: -10.0112500000, diff: 0.0035662001
0:20:52.66-0:20:55.89: shift: -10.0111666667, diff: 0.0194858536
0:20:56.60-0:20:57.12: shift: -10.0111666667, diff: 0.0720029324
0:21:03.59-0:21:04.11: shift: -10.0109166667, diff: 0.0062783645
Chapter start points: [u'0:00:00.00', u'0:01:27.00', u'0:02:56.97', u'0:10:15.12', u'0:21:24.99', u'0:22:54.92']
Fixing 1 border events right before 0:10:13.50
Group (start: 0:00:05.00, end: 0:10:13.50, lines: 121), shifts (start: -10.0749166667, end: -10.0631666667, average: -10.0690672356)
Group (start: 0:10:17.10, end: 0:21:04.11, lines: 144), shifts (start: -10.0301666667, end: -10.0109166667, average: -10.0216322788)
Snapping 0:03:31.32 to keyframes, start time by 0, end: 0.0420672355732
Snapping 0:03:55.66 to keyframes, start time by 0, end: 0.0670672355732
Snapping 0:04:44.54 to keyframes, start time by 0, end: 0.0590672355732
Snapping 0:05:10.64 to keyframes, start time by 0, end: 0.0760672355732
Snapping 0:05:29.39 to keyframes, start time by 0, end: 0.0430672355732
Snapping 0:06:19.60 to keyframes, start time by 0, end: 0.0340672355732
Snapping 0:06:37.27 to keyframes, start time by 0, end: 0.0250672355731
Snapping 0:06:44.47 to keyframes, start time by 0, end: 0.0510672355732
Snapping 0:06:52.35 to keyframes, start time by 0, end: 0.0500672355732
Snapping 0:07:00.82 to keyframes, start time by 0, end: 0.0500672355732
Snapping 0:07:06.62 to keyframes, start time by 0, end: 0.0340672355732
Snapping 0:07:29.75 to keyframes, start time by 0, end: 0.0510672355732
Snapping 0:07:40.18 to keyframes, start time by 0, end: 0.0340672355732
Snapping 0:07:47.41 to keyframes, start time by 0, end: 0.0340672355732
Snapping 0:07:54.53 to keyframes, start time by 0, end: 0.0340672355732
Snapping 0:08:01.09 to keyframes, start time by 0, end: 0.0170672355732
Snapping 0:08:02.60 to keyframes, start time by 0, end: 0.0170672355732
Snapping 0:09:11.08 to keyframes, start time by 0, end: 0.0170672355732
Snapping 0:09:27.14 to keyframes, start time by 0, end: 0.0250672355733
Snapping 0:09:41.61 to keyframes, start time by 0, end: 0.0260672355732
Snapping 0:10:05.95 to keyframes, start time by 0, end: 0.0180672355732
Snapping 0:10:08.10 to keyframes, start time by 0.0180672355732, end: 0
Snapping 0:10:20.22 to keyframes, start time by 0, end: 0.0366322787817
Snapping 0:10:23.64 to keyframes, start time by 0, end: 0.0206322787817
Snapping 0:10:53.31 to keyframes, start time by 0, end: 0.0206322787817
Snapping 0:11:49.03 to keyframes, start time by 0, end: -0.0303677212183
Snapping 0:12:27.97 to keyframes, start time by 0, end: -0.0133677212184
Snapping 0:12:50.64 to keyframes, start time by 0, end: -0.0133677212183
Snapping 0:13:02.11 to keyframes, start time by 0, end: -0.0133677212184
Snapping 0:13:16.69 to keyframes, start time by 0, end: -0.0133677212183
Snapping 0:14:08.80 to keyframes, start time by -0.0133677212184, end: -0.0133677212183
Snapping 0:14:15.68 to keyframes, start time by 0, end: -0.0133677212184
Snapping 0:14:17.82 to keyframes, start time by 0, end: -0.0303677212183
Snapping 0:14:22.52 to keyframes, start time by 0, end: 0.0116322787817
Snapping 0:14:42.84 to keyframes, start time by 0, end: -0.0213677212183
Snapping 0:15:00.06 to keyframes, start time by 0, end: -0.0133677212183
Snapping 0:15:02.23 to keyframes, start time by 0, end: -0.0213677212183
Snapping 0:16:24.23 to keyframes, start time by 0, end: -0.0133677212183
Snapping 0:16:51.40 to keyframes, start time by 0, end: -0.0133677212183
Snapping 0:17:22.26 to keyframes, start time by 0, end: -0.0133677212184
Snapping 0:18:35.96 to keyframes, start time by 0, end: -0.0303677212182
Snapping 0:18:42.67 to keyframes, start time by 0, end: -0.0303677212185
Snapping 0:19:12.98 to keyframes, start time by 0, end: -0.0213677212184
Snapping 0:20:50.70 to keyframes, start time by 0, end: -0.0383677212183
Done in 5.77015280724s

I'm working around the issue by using sed to remove all comments but it would be nice if Sushi would not output negative timestamps.