SubtitlesParserV2 2.2.2

SubtitlesParserV2

Universal subtitles parser which aims at supporting parsing for all subtitle formats. For more info on subtitles formats, see this page: http://en.wikipedia.org/wiki/Category:Subtitle_file_formats

[!NOTE] This is a fork/continuation of the original SubtitlesParser that seems to be a bit outdated / not updated anymore on nuget. Since I needed to parse subtitles in one of my projects, I decided to take this existing library, update the dependencies, and rewrite some parts of it in my own way at the same time, fixing / improving some parsers.

Supported Parsers/Writers

Quickstart

Universal parser

If you don't specify the subtitle format, the SubtitlesParserV2 will try all the registered parsers with the default configuration

using (FileStream fileStream = File.OpenRead(pathToSrtFile)){
	// Try to parse with all supported parsers
	SubtitleParserResultModel? result = SubtitleParser.ParseStream(fileStream, Encoding.UTF8)
	// Access the Subtitles with result.Subtitles
	// Note that if all parsers fail, the method will return null
}

Get Subtitle format by extension (Extensions detection)

string fileName = Path.GetFileName(file);
// Get format enum
SubtitleFormatType? mostLikelyFormat = SubtitleFormat.GetFormatTypeByFileExtensionName(Path.GetExtension(fileName).Replace(".",""));
// Get format instance
if (mostLikelyFormat != null) 
{
	SubtitleFormat format = SubtitleFormat.GetFormat(mostLikelyFormat.Value);
	Console.WriteLine($"Matching format is : {format.Name}");
}

Specific parser (default configuration)

You can use a specific parser if you know the format of the files you parse.

using (FileStream fileStream = File.OpenRead(pathToSrtFile)){
	// Try to parse with a specific parser using default configuration
	SubtitleParserResultModel result = SubtitleParser.ParseStream(fileStream, Encoding.UTF8, SubtitleFormatType.SubStationAlpha)
	// Try to parse with a multiple parser using default configuration
	SubtitleParserResultModel result = SubtitleParser.ParseStream(fileStream, Encoding.UTF8, new[] { SubtitleFormatType.SubStationAlpha, SubtitleFormatType.LRC });
}

Specific parser (Advanced configuration)

You can also specify advanced configurations for parsers that support it.

[!NOTE] This is not supported inside SubtitleParser.ParseStream methods.

// Get the format
SubtitleFormat format = SubtitleFormat.GetFormat(SubtitleFormatType.MicroDvd);
// Get the instance as a advanced parser
ISubtitlesParser<MicroDvdParserConfig> microDvdParserInstance = format.ParserInstance as ISubtitlesParser<MicroDvdParserConfig>;
// Parse
microDvdParserInstance.ParseStream(fileStream, Encoding.UTF8, new MicroDvdParserConfig() 
{
	Framerate = 30, // Force the parser to use a framerate of 30
});

Logging

SubtitlesParserV2 implements microsoft.extensions.logging.abstractions to allow you to redirect the log output to your own logging method (using a LoggerFactory)

Base example

// Assuming a LoggerFactory already exist
ILoggerFactory existingLoggerFactory = LoggerFactory.Create(builder =>
{
	builder.AddConsole(); // Adding the default console logging
});

// Set SubtitlesParserV2 LoggerFactory to the existing one
LoggerManager.LoggerFactory = existingLoggerFactory;

ASP.NET Core Websites

// Get the app loggerFactory
ILoggerFactory loggerFactory = app.Services.GetRequiredService<ILoggerFactory>();
LoggerManager.LoggerFactory = loggerFactory; // Redirect SubtitlesParserV2 logs to our LoggerFactory

Licenses / Acknowledgements

Current code is licensed under the GNU Lesser General Public License v3.0 (LGPLv3).

[!TIP] While this is not legal advice, a common misconception is that the LGPL license, due to having "GPL" in its name, requires you to license your program under the GPL or the same license. This is not necessarily true. Since this project is a library, the requirements depend on how you use the library and the compatibility between this project's license and your project's license. However, please note that this tip does not override the specific requirements of the LGPL license. There may be additional obligations based on your use case. For further clarification, you can refer to the LGPL FAQ about static vs dynamic linking requirements, this Reddit post, or this blog post. Again, this is not legal advice.

⚠️ The original version, available here, is licensed under the original project made by AlexPoint, license/credits:

The MIT License (MIT)

Copyright (c) 2015

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.