Browse free open source Subtitle Editors and projects below. Use the toggles on the left to filter open source Subtitle Editors by OS, license, language, programming language, and project status.

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  • 1
    FFmpeg Batch AV Converter

    FFmpeg Batch AV Converter

    Free all in one audio/video ffmpeg batch encoder

    FFmpeg Batch AV Converter is a free universal audio and video encoder, that allows to use the full potential of ffmpeg command line with a few mouse clicks in a convenient GUI with drag and drop, progress information. Some fancy wizards make things easy for non-experts. Thanks to its multi-file encoding feature, it may be the fastest a/v batch encoder available, since it maximizes system resources usage by launching as many simultaneous processes up to user cpu thread count. You can change encoding priority, pause and resume, set automatic shutdown. It is good for seasoned ffmpeg users as well as beginners. It provides unlimited single or multi-file batch encoding for almost any audio/video format. You can use any set of parameters and try them before starting encoding. You can multiplex streams, subtitle videos (as track and hardcoded), trim, concatenate, record screen, capture M3u8 or YouTube URLs. You can also get multimedia info.
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    Downloads: 1,906 This Week
    Last Update:
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  • 2
    OpenShot Video Editor

    OpenShot Video Editor

    Award-Winning Open Source Video Editing Software

    OpenShot Video Editor is a powerful yet very simple and easy-to-use video editor that delivers high quality video editing and animation solutions. OpenShot offers a myriad of features and capabilities, including powerful curve-based Key frame animations, 3D animated titles and effects, slow motion and time effects, audio mixing and editing, and so much more. It’s available for Linux, Mac and Windows, with a very simple and friendly interface. Start creating stunning videos quickly and easily with OpenShot!
    Downloads: 94 This Week
    Last Update:
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  • 3
    Penguin Subtitle Player

    Penguin Subtitle Player

    An open-source, cross-platform standalone subtitle player

    -- Update -- The slow timer problem has been fixed since v0.2.1 which is released on 19/08/2015. Please re-download it if you encounter the delay. --------------- Penguin Subtitle Player is an open-source, cross-platform standalone subtitle player, as an alternative to Greenfish Subtitle Player, SrtViewer (Mac), SRTPlayer, JustSubsPlayer and Free Subtitle Player. You download the subtitle file (.srt, .ssa, .ass, .vtt) file from any sites you like and load it into the subtitle player. The subtitle player provides a translucent window which always stays on the top so that subtitles can be shown on top of the video without blocking anything. With Penguin Subtitle Player, just open your favorite online streaming site, load the subtitle file into the player, and enjoy.
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    Downloads: 58 This Week
    Last Update:
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  • 4
    srt-translator

    srt-translator

    Subtitle translator from one natural language to other.

    Translating subtitles in format SubRip from one natural language to other. It is based on Google Translate without API and therefore without payment. Translator have automatic and manual spell checkers.
    Downloads: 31 This Week
    Last Update:
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  • 5
    Subtitle Editor

    Subtitle Editor

    Subtitle Editor for SRT, SUB, SBV, TXT, ASS, SSA subs

    Srt Editor is a small subtitle editing tool for OSX and Win64. You can edit the following file formats in various ways : SRT, SUB, TXT, SBV, ASS, SSA. Last version : 3.1.0 (OSX & Windows) New since version 3.0.0 : - Substation Alpha reading and auto convert to SRT. - Bugfixes :) - Manual update.
    Downloads: 18 This Week
    Last Update:
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  • 6
    Subtitle Finder

    Subtitle Finder

    This software will help you to find subtitle easily.

    Free Subtitle Finder for Windows on SourceForge This is free software which should help you find a subtitle for movies in a directory. View Details of Version 4.9: https://youtu.be/dJNskqNHucg View Details of Version 2.7: https://youtu.be/yDOLU2X_Ft0 Put this software in the folder containing movie(s) and run to enjoy. OR Install the software, right click on any movie and Click on download subtitle! This software was made by Python. -> Framework for UI: wxPython Please report a bug to make it disappear in next update. Contact: * Email: xayed42@gmail.com * Facebook: Abdullah Xayed (https://facebook.com/xayed42)
    Downloads: 10 This Week
    Last Update:
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  • 7

    srt2vobsub

    A command-line tool that converts text subtitles to vobsub

    A command line tool for Linux and other Unix-like systems that generates a pair of .idx/.sub vobsub subtitles files from textual subtitles.
    Downloads: 6 This Week
    Last Update:
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  • 8
    VisualSubSync For Italiansubs

    VisualSubSync For Italiansubs

    Visualsubsync enhanced version for italiansubs.net

    VisualSubSync For Italiansubs HAS MOVED TO GITHUB: https://red5goahead.github.io/VisualSubSync-Enhanced/ Visualsubsync Enhanced is now avaiable for Windows 10 users on Windows Universal Platform https://www.microsoft.com/store/apps/9nblggh4401s The natural enhanced extension of the awesome ToffParis project at https://sourceforge.net/projects/visualsubsync/ developed for italiansubs.net community (no traslation, the whole project is in English). Visualsubsync Enhanced is fully compatible with Windows Xp, Windows Vista, Windows 7, Windows 8/8.1 and now for Windows 10. It includes new functions like a complete internal filter graph support via mpc-home cinema and lav codecs, online dictionary automatic search (Italian language), new tools for resync, a new tool for progressive desync issues, new updated vsfilter for improved subtitles quality and much more...
    Downloads: 2 This Week
    Last Update:
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  • 9
    VATSG

    VATSG

    Video automatic transcribe and translated subtitle generator

    It generates srt format subtitle from videofile which can be any source language that whisper support , and then make translated subtitle file of your target language which deepl support. This is the subtitle generator(VATSG) which use [moviepy](https://github.com/Zulko/moviepy) to generate mp3 and then use [faster-whisper](https://github.com/guillaumekln/faster-whisper) to get text recognition and then use deepl-api to generate your target language subtitle file(srt format) If you are a general user who want to view any video file and mp3 file to your language, It will provide way. It's very easy to use because it has simple gui and very intuitive. So you can easily use it for any purpose. Now, you can choose to download either window installer setup type or uninstalled type. Enjoy and support my consistent development!
    Downloads: 3 This Week
    Last Update:
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  • 10

    srtCreator

    creates .srt file from .txt file.

    Converts plain text (.txt) into subtitles(.srt), using punctuation to nicely cut between subs. Detects sentences with a regex. Evaluates the best character count for each subs. Tries to cut at commas, colon and semi-colons before cutting between words. in v1.2: live preview with update of max sub length
    Downloads: 3 This Week
    Last Update:
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  • 11
    VOLPE

    VOLPE

    Video OverLay Producer and Editor, professional overlay techniques

    Latest release: 1.01 (20-Mar-2020) Overlay videos and image sequences with: *Logos *Other videos or image sequences *EXIF data (date, time, exposure…) *KML data (speed, heading) *Text (titles, subtitles, with a variety of intro and outro effects) Easy control of: *Position, blend mode *Font, weight, size, color, opacity, shadow Requires: *PHP >= 7.3, with Imagick and Mysqli *JQuery with UI, Paperjs for VOLPE, spectrum *Exiftool, Ffmpeg Packaged modules: * LTMagic * Font System Manager currently with support for 200+ fonts/490+ variants Examples of complete sequences processed by VOLPE: https://youtu.be/YsYDMeOHVHo (3-Apr-20) https://youtu.be/uGUC9rd6qHQ (6-Nov-19) https://youtu.be/XI0x1lFq7xQ (2-Sep-19) https://youtu.be/uNtytSYeThw (17-Jul-19) If you use VOLPE to produce video, you may use the logo, and let us know where the video is hosted. Left to its own devices, VOLPE will not overlay obtrusive advertising from me or anyone else.
    Downloads: 1 This Week
    Last Update:
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  • 12
    SRTools

    SRTools

    Command-line tools for SSA->SRT conversion & editing of SRT subtitles

    Tools for SSA->SRT conversion and editing of SRT subtitles: * ssa2srt - converts SSA/ASS subtitles to SubRip format; * fixsrtsub - fixes SubRip subtitles.
    Downloads: 0 This Week
    Last Update:
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  • 13
    Sub-Merge combines multiple subrip files to a single SubRip file. You can do re-indexing, sync srt with video or create an srt from a large srt file.
    Downloads: 0 This Week
    Last Update:
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  • 14
    SubtitleMixer

    SubtitleMixer

    Small tool to synchronize or mix two subtitles files.

    This application is a small software that allows having an original and well synchronized subtitle, assign the times to another translation that has sync errors. The application was created after downloading many videos with original subtitles, and finding translations for other video versions, which did not match the times. It is a minimal, simple and simple application that will be extended as needed. At the moment it only has subtitle support of type SRT. - New features: * Spell check with hunspell dictionary. * Translate using google translate. * Auto check for updates.
    Downloads: 0 This Week
    Last Update:
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  • 15
    Translate-Subtitle-File

    Translate-Subtitle-File

    Subtitle Creation Assistant

    Subtitle group machine translation assistant - [Function 1: Translate subtitle file] .srt .ass .vtt [Function 2: Voice to text] (Drag in video or audio to recognize subtitles) (The latest version v4.1.0 Update time 2021 2 May 23) 12 translation service providers can be configured, such as Google, Baidu, Tencent, Caiyun, IBM, Azure, Amazon, etc. (6 voice service providers can be configured: Alibaba Cloud, Xunfei, Tencent Cloud, IBM, Azure, Amazon ) Advantages: 1. You can use multiple service providers, 2. You can configure your own API Key to use your own account's free quota, such as Tencent's free translation quota of 5 million characters per month, IBM's 500-minute speech-to-text free quota (tern. best The domain name has expired and I don't want to renew it.) Azure speech-to-text and DeepL free version have problems, it is normal to not use it, please wait for the next version to fix. Machine translation of subtitle files, use machine translation to process files.
    Downloads: 0 This Week
    Last Update:
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  • 16

    VSUB MOVIE CONTROLLER

    A Movie Controller tool that using for CasparCG Flash Template

    A tool that controlling movie that showing in Flash Template for CasparCG Server, quick controlling player, duration indicator, sound indicator. Also can controlling Flash Projector that playing movie in the realtime.
    Downloads: 0 This Week
    Last Update:
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  • 17
    Versione personalizzata del software VisualSubSynch Enhanced con i parametri del sito italiano di fansubbing www.subsfactory.it Custom Release of VisualSubSynch Enhanced according to the subbing parameters of the italian website www.subsfactory.it
    Downloads: 0 This Week
    Last Update:
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  • 18

    srttiming

    a commandline tool for manipulating time values in .SRT subtitle files

    srttiming is a tiny command-line application which converts pace and offset of SRT subtitle files among different frame rates. srttiming synchronizes ALL the time labels in the original .srt file according to given PACE and OFFSET values. srttiming can also calculate PACE and OFFSET values from given REFERENCE TIME POINTS. Currently intended for Linux/Unix platforms.
    Downloads: 0 This Week
    Last Update:
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Guide to Open Source Subtitle Editors

Open source subtitle editors are softwares that allow users to create, modify, and manage subtitles for media files. This type of software is often used to rapidly translate dialogue or text into a different language, as well as synchronize subtitles with the audio in a video file. They can also be used to fix typos, missed words, and incorrect punctuation in existing subtitles.

The primary benefit of open source subtitle editors is that they are free and customizable. Because the software’s code is publicly available, users can adjust their program to suit their specific needs or even contribute to the development of the project itself. The ability for the user community to collaborate on improving an existing program makes open source subtitle editors incredibly versatile and powerful tools for media creation and manipulation.

Generally speaking, open source subtitle editors offer similar functionality across most programs but may vary significantly in terms of features available and user interface design. Popular options include Jubler Subtitle Editor (Windows/macOS), Gnome Subtitles (Linux-based), Subtitle Workshop (Windows) or AegiSub (Cross-platform). Each editor allows users to save subtitles in various file formats including SRT (SubRip Text), SUB/IDX (SubViewer/DVD Index), ASS/SSA (Advanced SubStation Alpha) or others depending on your choice of editor.

Some other advanced functions like spellchecking make it easier for users who need extra help when making edits or translations; others come equipped with debugging tools specifically designed for fixing common errors such as incorrect timestamps or synchronization issues between video and subtitle tracks. Open source tools have made it much easier for content creators, whether professionals or hobbyists, to quickly deliver accurate subtitled projects at a fraction of the cost associated with commercial equivalents.

Open Source Subtitle Editors Features

  • Automatic Synchronization: An Open Source Subtitle Editor can automatically synchronize a subtitle with an audio or video file, quickly and conveniently. This feature allows users to quickly adjust the timing and length of subtitles according to the media they are being used on.
  • Multi-Language Support: By utilizing an Open Source Subtitle Editor, users can easily create multi-language subtitle files from one single source. This feature gives people who often work on international projects the flexibility to provide accessible content for those in other countries that may not understand the primary language of their material.
  • Text Formatting Options: These editors allow for basic text formatting features such as font size adjustment, bold/italic/underline formatting, font family selection, color choices and background color chooser options. With these features, you can give your subtitles a unique look that’s sure to draw more attention from viewers.
  • Audio Waveform Representation: Open source subtitle editors often feature an interactive visual representation of audio waveforms which helps users ensure accurate synchronization between their media files and their subtitles in real time while editing them.
  • Time Adjustment Tools: Open source subtitle editors also come equipped with time adjustment tools like trim, split and shift functions that allow you to make adjustments or corrections in your project's timeline without having to redo everything manually. With this kind of feature at your disposal, efficient editing is made easy.
  • Subtitle Segmentation: This feature allows users to easily break down their subtitles into shorter segments, allowing them to be used better with different types of media and providing greater accuracy in translation.
  • Spell Checker & Grammar Correction: To ensure the accuracy and consistency of your subtitles, Open Source subtitle editors provide a spell checker and grammar correction tools that help you avoid mistakes in your files.

What Are the Different Types of Open Source Subtitle Editors?

  • SubRip (SRT): Offers basic functions for editing subtitles, including the ability to adjust text font, color, and size. It also supports extended formatting features such as karaoke and multi-line captions.
  • Sub Station Alpha (SSA): Includes support for a wide range of subtitle formats and is capable of displaying up to five lines of text per caption. Additionally, it allows users to add special effects and animation to enhance their subtitles.
  • Advanced SubStation Alpha (ASS): Designed specifically with anime fans in mind, this editor offers detailed control over various elements within the subtitle file like font size, typeface, color, layout positions and more.
  • Video Caption Maker: A popular app with content creators who work with video files. It combines ease of use with powerful features that allow users to create high-quality captions quickly.
  • Aegisub: A cross-platform application that provides users access to advanced tools for creating complex subtitles without requiring any coding knowledge or experience. It also includes support for multiple languages and fonts.
  • Jubler: An easy-to-learn editor that allows users to manipulate their subtitle files in real time while previewing the changes directly on their video files before exporting them in different formats.

Benefits of Open Source Subtitle Editors

  • Increased Flexibility: Open source subtitle editors allow users to modify and customize the subtitles as needed, allowing for greater flexibility compared with proprietary software. The opensource frameworks provide an open access platform allowing developers to create feature-rich applications without having to start from scratch. This means they can easily collaborate and contribute new ideas quickly and efficiently.
  • Reduced Cost: Open source subtitle editors are typically free (or cost almost nothing), so no additional costs are incurred when using them. In addition, since there’s usually no licensing fees attached, users can use the software at no extra cost, giving more people access to editing tools that would otherwise be too expensive for their budget.
  • Community Support: Open source projects often have a large community of active users and developers that can provide support if something goes wrong with your project or if you need help making changes. By having access to a supportive community of users and developers who are familiar with the software, it makes troubleshooting much easier than trying to do it yourself without any assistance.
  • Interoperability: Thanks to the openness of open source software, different programs can work together as long as both applications have an open API available for integration purposes. This eliminates compatibility issues between different programs which is essential when working on subtitles from multiple sources or with multiple video formats.
  • Transparency: Finally, because open source projects have their code published publicly for anyone to see and modify (as long as certain conditions are met), this ensures greater transparency in how the code works behind the scenes; something that can’t be said of proprietary solutions where all you get is what’s shown on the surface-level interface leaving out any details regarding how it works internally.

Who Uses Open Source Subtitle Editors?

  • Amateur Movie Makers: Individuals who are interested in creating their own movies or videos and need to provide appropriate subtitles for their projects.
  • Professional Video Editors: Professionals who work for production companies and create content for television, web, or film media requiring accurate subtitling.
  • Educational Institutions: Schools and universities that often need to utilize open source subtitle editors for educational purposes such as making instructional materials.
  • Language Learners: Individuals who are learning new languages may use open source subtitle editors to practice reading and listening skills in different foreign languages.
  • Accessibility Organizations: Organizations providing video translation services for people with hearing disabilities require access to quality subtitles that often can only be created through open source subtitle editors.
  • Home Video Enthusiasts: People interested in creating home videos of travel trips, family gatherings, etc., usually benefit from having access to quality subtitles when sharing the videos online or on social media sites.
  • Subtitle Translators: Professionals who create subtitles for multiple languages that need to be translated accurately often rely on open source editors for quality output.
  • Organizations Creating Multimedia Content: Companies and organizations creating online multimedia content such as websites, advertising materials, etc., require accurate and attractive subtitles that can be provided by open source editors.
  • Researchers: Academic professionals often need access to reliable subtitles when conducting their research in fields such as linguistics, language learning, and other related areas.
  • Scriptwriters: Writers of scripts for movies or television shows may also require access to good quality subtitles for their projects.

How Much Do Open Source Subtitle Editors Cost?

Open source subtitle editors are completely free to use. There are no upfront costs for downloading and using these types of editors. Open source software is available without any restrictions, so you can access the code and modify it as you see fit. The only cost associated with using open source subtitle editors is the time it may take to download, install and learn how to use them. Additionally, since there is no support provided with open source software, you’ll need to look up answers on your own or join a forum dedicated to helping users troubleshoot any issues they might have. Ultimately though, open source subtitle editors are an incredible resource that allow anyone with a computer and internet connection the ability to edit their subtitles for free.

What Do Open Source Subtitle Editors Integrate With?

Many types of software can integrate with open source subtitle editors. These include video players, image viewers, audio players, and other multimedia formats. For example, a video player may be integrated with the editor to allow users to watch the video while making edits to its subtitles. An audio player could be connected to the editor as well in order to hear how each line of dialogue is sounding. Additionally, an image viewer can be used in conjunction with the subtitle editor so that users can see what images appear when certain lines are spoken. Ultimately, depending on the needs and preferences of users, all types of software can potentially integrate with open source subtitle editors.

Recent Trends Related to Open Source Subtitle Editors

  • Open source subtitle editors are becoming increasingly popular due to their wide range of features and flexibility.
  • They provide users with more control over their subtitles, as well as the ability to add new functions and customize the output.
  • Many open source subtitle editors are free or low cost, making them a great option for budget-conscious users.
  • They are user-friendly, allowing even those with limited technical knowledge to create professional-looking subtitles.
  • Many of these editors support multiple languages, enabling users to create subtitles in multiple languages easily.
  • Open source subtitle editors offer a variety of text formatting options, allowing users to adjust font size and color as well as adding effects such as bolding and italics.
  • These editors also support various video formats, such as AVI, MP4, MOV, and WMV, making it easy to create subtitles for any type of video.
  • In addition to creating subtitles from scratch, some open source subtitle editors allow users to edit existing subtitles and sync them to the video.
  • Most of the open source subtitle editors are cross-platform, meaning they can be used on multiple operating systems such as Windows, Mac OSX, Linux, etc.

Getting Started With Open Source Subtitle Editors

Getting started with open source subtitle editors is easy. Here are the steps to get you up and running:

Step 1: Choose an Open Source Subtitle Editor: There are a variety of free, open source subtitle editors available, such as Jubler, Aegisub, and Subtitle Edit. Be sure to read the user reviews before you select a program to ensure that it meets your needs.

Step 2: Download & Install: Once you have selected an editor, download and install it on your computer. The installation process should be straightforward; if not there should be support files available online or documentation provided by the developer.

Step 3: Create Your Project File: Now it’s time to create your project file. This can be done using the “New File” feature in most programs which will prompt you to save the file with a unique name. After this step is complete, you will see a blank project window ready for editing subtitles.

Step 4: Import Media Files: Next step is to import any media files associated with your project (videos, movies, etc.). Most editors allow users to drag and drop files from their computers into the program interface or use file menus in order to locate them on their systems.

Step 5: Get Started With Editing: Finally, you can begin editing subtitles. If this is your first time creating or editing subtitles then take some time familiarize yourself with all of the different features that many of these free programs offer including adding text boxes, synchronizing audio track times, adjusting timing, durations, etc. Additionally several programs also include spell checkers which will help keep errors out of final products. When all changes have been made they can easily be exported as text (.SRT) or XML (.XML) files depending on what format they need to be saved in for final presentation purposes such as YouTube videos or films festivals entries, etc.

Once you have completed all of the steps outlined above, you will have the basic skills and know-how necessary to get started using open source subtitle editors. Good luck.