subs2cia 0.3.0

A subtitle-based multimedia extractor and compressor

subs2cia - Extract subtitled dialogue from audiovisual media for use in language acquisition

Features

• Generates condensed media from subtitled media that only contains spoken dialogue (subs2cia condense)
  • No unnatural stutters: simultaneous subtitles lines are merged for seamless listening
  • Automatically generate condensed subtitle, audio, and video (video must be enabled with -m)
  • Automagically choose input sources from a certain language or manually specify what inputs to condense (-tl, -si, -ai, -ls)
  • Automatically filter out subtitles that don't contain dialogue using built in heuristics or user-defined regexes (-ni, -R)
  • Reinserts natural spacing between sentences that start and end close together (-t)
  • Pads subtitles with additional audio (-p)
  • Process multiple files with batch mode (-b)
• Export subtitles with screenshots into your SRS of choice (subs2cia srs)

Installation

Dependencies

• Python 3.6 or later
• FFmpeg binaries (ffmpeg and ffprobe) must be on your PATH (i.e. can execute ffmpeg from the command line)

(Recommended) pip install:

pip3 install subs2cia
subs2cia condense -h

Pip install from source (macOS, Linux)

Git clone or otherwise download the repository and navigate to it:

$ git clone "https://github.com/dxing97/subs2cia"
$ cd subs2cia

Use pip to install:

$ pip3 install .

On WSL, you may need to add ~/.local/bin to your PATH first.

Run as script

If you prefer, you can also run subs2cia/main.py directly.

Windows

Instructions for installing and adding ffmpeg to your path can be found here. The subs2cia installation process is generally the same as for Linux, although some commands may have different names (e.g. instead of pip3, you may need to run py -m pip instead). Some useful links on installing pip and python packages:

• https://pip.pypa.io/en/stable/installing/
• https://docs.python.org/3/installing/index.html

You may need to restart command prompt for path changes to take effect when installing pip.

Condense Quickstart Usage

Condense video.mkv into video.condensed.mp3 and video.condensed.srt (if embedded subtitles are SRT):

• subs2cia condense -i video.mkv

Condense video.mkv, preferring english subtitle/audio tracks if they exist. Additionally, pad each subtitle's start/end time by 150ms, and merge subtitles that start within 1300ms (1000 + 2x150) of each other (i.e. also add silences shorter than 1300ms):

• subs2cia condense -i video.mkv -p 150 -t 1000 -tl english

Condense video.mkv using video_subtitles.ass into video.condensed.flac and video.condensed.ass

• subs2cia condense -i video.mkv video_subtitles.ass -ae flac

Condense audio.mp3 and subtitles.srt into audio.condensed.mp3 and audio.condensed.srt

• subs2cia condense -i audio.mp3 subtitles.ass

[Linux/macOS] Condense all .mkv and .srt files in a directory organized according to Plex standards. Ignore the first 1m30s of subtitles and the 1m30s of subtitles 2 minutes from the end. Prefer japanese audio/subtitles. Set subtitle padding to 100ms and threshold to merge subtitles to 1500ms:

• subs2cia condense -b -i *.mkv *.srt -I 0m 1m30s -I e2m +1m30s -tl ja -t 1500 -p 100

For a full usage guide, run subs2cia condense -h or take a look at USAGE.

SRS Export Quickstart

subs2cia srs -i video.mkv

Limitations and Assumptions

• Won't work on bitmap subtitles (e.g. PGS), only supports subtitle formats supported by ffmpeg and pysubs2
• Subtitles must be properly aligned to audio.

subzipper

Renames subtitle files to match a reference (video) file to conform with Plex-style naming standards, optionally adding language information. Intended for use with shell wildcards.

Usage

$ subzipper -h
usage: subzipper.py [-h] -s <input files> [<input files> ...] -r <input files>
                    [<input files> ...] [-l ISO_LANG_CODE] [-ns] [-d] [-v]

SubZipper: Map video files to subtitle files

optional arguments:
  -h, --help            show this help message and exit
  -s <input files> [<input files> ...], --subtitle <input files> [<input files> ...]
                        List of subtitle files. Number of subtitle files
                        should equal number of reference files.
  -r <input files> [<input files> ...], --reference <input files> [<input files> ...]
                        List of reference files, typically video files. Number
                        of subtitle files should equal number of reference
                        files.
  -l ISO_LANG_CODE, --language ISO_LANG_CODE
                        Language code to append to end of subtitle file.
                        Optional. If set, will be checked for validity.
  -ns, --no-sort        If set, will not sort input files alphabetically.
  -d, --dry-run         If set, will print out mappings but will not write any
                        changes to disk.
  -v, --verbose         Verbose output if set.

Examples

Rename episode01.ass to MyShow_S01E01.ja.ass and episode02.ass to MyShow_S01E02.ja.ass,

subzipper -s "episode01.ass" "episode02.ass" -r "MyShow_S01E01.mkv" "MyShow_S01E02.mkv" -l ja