pysrt
pysrt is a Python library used to edit or create SubRip files.
Foreword
pysrt is mainly designed as a library, but if you are experiencing troubles
with bad subtitles you can first try to use ruby-osdb
which will try to find the best subtitle for your movie. If you are still unlucky
pysrt also provide an srt command useful for either shift, split, or rescale a
.srt file.
Command Usage
Shifting:
$ srt -i shift 2s500ms movie.srt
Spliting:
$ srt split 58m26s movie.srt
Rescaling:
$ srt -i rate 23.9 25 movie.srt
Installation
pysrt is available on pypi. To install it you can use either
pip:
$ sudo pip install pysrt
or distutils:
$ sudo easy_install pysrt
It is compatible with python >= 2.6 and 3.
Library Usage
Import:
>>> import pysrt
Parsing:
>>> subs = pysrt.open('some/file.srt')
# If you get a UnicodeDecodeError try to specify the encoding
>>> subs = pysrt.open('some/file.srt', encoding='iso-8859-1')
SubRipFile are list-like objects of SubRipItem instances:
>>> len(subs) >>> first_sub = subs[0]
SubRipItem instances are editable just like pure Python objects:
>>> first_sub.text = "Hello World !" >>> first_sub.start.seconds = 20 >>> first_sub.end.minutes = 5
Shifting:
>>> subs.shift(seconds=-2) # Move all subs 2 seconds earlier
>>> subs.shift(minutes=1) # Move all subs 1 minutes later
>>> subs.shift(ratio=25/23.9) # convert a 23.9 fps subtitle in 25 fps
>>> first_sub.shift(seconds=1) # Move the first sub 1 second later
>>> first_sub.start += {'seconds': -1} # Make the first sub start 1 second earlier
Removing:
>>> del subs[12]
Slicing:
>>> part = subs.slice(starts_after={'minutes': 2, 'seconds': 30}, ends_before={'minutes': 3, 'seconds': 40})
>>> part.shift(seconds=-2)
Saving changes:
>>> subs.save('other/path.srt', encoding='utf-8')