webvtt fragments about pysubs2

[tkarabela]

While pysubs2 has no particular support for WebVTT format at this time, the format is sufficiently similar to SRT that in simple cases, pysubs2 will read it just fine. If you just want to collect subtitles from multiple files without any retiming, that would be:

import pysubs2


input_files = [
    "subtitle_V1-0.webvtt",
    "subtitle_V1-1.webvtt",
    "subtitle_V1-2.webvtt",
    "subtitle_V1-3.webvtt",
]

output_subs = pysubs2.SSAFile()

for file in input_files:
    subs = pysubs2.load(file)
    output_subs.events.extend(subs.events)

output_subs.save("subtitle.srt")

[X-C0DE]

While pysubs2 has no particular support for WebVTT format at this time, the format is sufficiently similar to SRT that in simple cases, pysubs2 will read it just fine. If you just want to collect subtitles from multiple files without any retiming, that would be:

import pysubs2


input_files = [
    "subtitle_V1-0.webvtt",
    "subtitle_V1-1.webvtt",
    "subtitle_V1-2.webvtt",
    "subtitle_V1-3.webvtt",
]

output_subs = pysubs2.SSAFile()

for file in input_files:
    subs = pysubs2.load(file)
    output_subs.events.extend(subs.events)

output_subs.save("subtitle.srt")

Thanks a lote
This way works for me

[X-C0DE]

Hey
I tryied the same code for vtt subtitles and it not works. How can I do this to works with vtt files?

Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
  File "/usr/local/lib/python3.6/site-packages/pysubs2/ssafile.py", line 92, in load
    return cls.from_file(fp, format_, fps=fps, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/pysubs2/ssafile.py", line 145, in from_file
    format_ = autodetect_format(fragment)
  File "/usr/local/lib/python3.6/site-packages/pysubs2/formats.py", line 62, in autodetect_format
    raise FormatAutodetectionError("No suitable formats")
pysubs2.exceptions.FormatAutodetectionError: No suitable formats

[tkarabela]

You can try to force the input format to get around autodetection:

subs = pysubs2.load("test.vtt", format_="srt")
subs.save("test.srt")

However, WebVTT is fundamentally a different format than SRT, so re-using SRT parser to load such files is a "hack". It may be necessary to implement proper WebVTT parser to read more complex files.

[X-C0DE]

hmm
it not worked correctly. sad life

[X-C0DE]

is it possible for me to use pysubs2 to concatenate subtitles in srt?
['sub_1.srt', 'sub_2.srt', 'sub_3.srt'] >>> subtitle.srt

[tkarabela]

Can you share the .vtt file which could not be loaded by pysubs2? I can have a look at it.

As for merging SRT files, yes you can do that:

import pysubs2

input_files = [
    "sub_1.srt",
    "sub_2.srt",
    "sub_3.srt",
]

output_subs = pysubs2.SSAFile()

for file in input_files:
    subs = pysubs2.load(file)
    output_subs.events.extend(subs.events)

output_subs.save("subtitle.srt")

[X-C0DE]

Can you share the .vtt file which could not be loaded by pysubs2? I can have a look at it.

As for merging SRT files, yes you can do that:

import pysubs2

input_files = [
    "sub_1.srt",
    "sub_2.srt",
    "sub_3.srt",
]

output_subs = pysubs2.SSAFile()

for file in input_files:
    subs = pysubs2.load(file)
    output_subs.events.extend(subs.events)

output_subs.save("subtitle.srt")

VTT files:
vtt_files.zip
For concatenate srt files i already tryied to use this, but it not works.

[tkarabela]

I have added explicit support for VTT files into the library and successfully merged your testing files with this script:

import pysubs2
import glob

input_files = glob.glob("SUB_*.vtt")

output_subs = pysubs2.SSAFile()

for file in input_files:
    subs = pysubs2.load(file)
    output_subs.events.extend(subs.events)

output_subs.save("subtitle.srt")

I will be releasing a new version of pysubs2 shortly. Relevant changes are in commit 29629fd.