| Author |
Message |
Alx
Guest
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 Posted:
Sat Apr 09, 2005 2:17 pm Post subject:
SRT subtitles format |
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I am trying to build a small application to manipulate .SRT files - to
change fps, offset ... (I know there are many apps like that around,
it's just an excuse to code)
but I was unable to find a description of the SRT format:
.....
2
00:00:21,664 --> 00:00:25,200
At the end of a war
which lasted 50 years
3
00:00:25,235 --> 00:00:29,784
The Great Asian Federation has
defeated the European Federation
.....
all is obvious, apart from the 664, 200, 235, 784 indices - any hint?
Thanks!
Alessandro Magni
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Billy Joe
Guest
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| Posted:
Sat Apr 09, 2005 10:55 pm Post subject:
Re: SRT subtitles format |
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In ref: 38d4c7d4.0504090217.e6c41f4@posting.google.com
Alx <nenamiele@libero.it> wrote:
| Quote: | I am trying to build a small application to manipulate .SRT
files - to change fps, offset ... (I know there are many apps
like that around, it's just an excuse to code)
but I was unable to find a description of the SRT format:
....
2
00:00:21,664 --> 00:00:25,200
At the end of a war
which lasted 50 years
3
00:00:25,235 --> 00:00:29,784
The Great Asian Federation has
defeated the European Federation
....
all is obvious, apart from the 664, 200, 235, 784 indices -
any hint?
Thanks!
Alessandro Magni
|
Thousandths of seconds.
i.e from 21,664/1000 to 25,200/1000 (or 21.664 seconds to 25.2
seconds)
Can't determine the frame rate tho, as 25,200 to 25,235 is not
a modulus match to 29.97 or 25 fps?? (tho I'd lean toward 25
fps as being the source) So, I gather that the display of
subtitles in the SRT format is time zero, rather than frame
rate, dependant??
BJ |
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Jan Panteltje
Guest
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| Posted:
Sun Apr 10, 2005 12:55 am Post subject:
Re: SRT subtitles format |
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On a sunny day (Sat, 9 Apr 2005 11:55:42 -0700) it happened "Billy Joe"
<see.sig@invalid.org> wrote in <v8qdnTLxuLK6uMXfRVn-hQ@adelphia.com>:
| Quote: | In ref: 38d4c7d4.0504090217.e6c41f4@posting.google.com
Alx <nenamiele@libero.it> wrote:
I am trying to build a small application to manipulate .SRT
files - to change fps, offset ... (I know there are many apps
like that around, it's just an excuse to code)
but I was unable to find a description of the SRT format:
....
2
00:00:21,664 --> 00:00:25,200
At the end of a war
which lasted 50 years
3
00:00:25,235 --> 00:00:29,784
The Great Asian Federation has
defeated the European Federation
....
all is obvious, apart from the 664, 200, 235, 784 indices -
any hint?
Thanks!
Alessandro Magni
Thousandths of seconds.
i.e from 21,664/1000 to 25,200/1000 (or 21.664 seconds to 25.2
seconds)
Can't determine the frame rate tho, as 25,200 to 25,235 is not
a modulus match to 29.97 or 25 fps?? (tho I'd lean toward 25
fps as being the source) So, I gather that the display of
subtitles in the SRT format is time zero, rather than frame
rate, dependant??
Yes, it is time. |
I think it will appear in the next frame that comes up.
In that way it is quantized. |
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Séverine
Guest
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| Posted:
Fri Apr 15, 2005 10:45 pm Post subject:
Re: SRT subtitles format |
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:-)
Duration of subtitles is often calculated, based on the number of
words/letters. That's why you often get end times that don't coincide with
frames. I believe SubRip itself offers such a function...
Also, don't forget the 23.976fps framerate (24fps films copied from American
NTSC television).
I think SubRip comes with a file describing the SRT format. Anyway, the
format also uses the HTML-style <i> and </i> tags for italics;
you can use them around a whole line, or for a few words in the middle of a
line.
Marc. |
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Séverine
Guest
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| Posted:
Wed Apr 20, 2005 12:05 am Post subject:
Re: SRT subtitles format |
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:-)
"Séverine" wrote
| Quote: | I think SubRip comes with a file describing the SRT format. Anyway, the
format also uses the HTML-style <i> and </i> tags for italics;
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Please read that as <i> and </i>
Marc. |
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