FAQ for AI.opensubtitles.com

Last Updated: November 8, 2024, 4:20 am

AI.opensubtitles.com is an online platform that utilizes artificial intelligence to transcribe and translate audio and video files. Users can easily convert their multimedia content into text and translate it into various languages.

In early 2023, a company approached me with the goal of automating the subtitling process for their extensive collection of software tutorial videos. They wanted to generate subtitles and translate them into multiple languages. In response, I developed a PHP backend, accessible through REST API, to automate audio track extraction and transcription using an AI model. Subsequently, I created a web front end using HTML5, Javascript, and WASM modules to provide users with a user-friendly means of extracting audio tracks from movie files and generating subtitles.

After discussions with the developer of OpenSubtitles.org, the largest public database for movie subtitles, we decided to host the platform on a subdomain. We integrated the user base from the main domain using a mechanism similar to OAuth2, allowing users of OpenSubtitles.org to log in to AI.OpenSubtitles.com with their main site credentials. At this stage, we introduced a credit-based payment system, utilizing the payment provider service from the main site.

Over the following months, I conducted extensive testing on various AI models for transcription and translation. The successful models were incorporated into the subtitle generator platform, providing users with a diverse range of choices. In July 2023, AI.OpenSubtitles.com was officially launched and has since experienced growth in both user numbers and the selection of available AI models.

As of September 2024, a new login option has been introduced. Now, in addition to logging in with their OpenSubtitles.org credentials, users can also sign in directly using their OpenSubtitles.com account.

Our platform makes it easy for users to upload their audio, video, or subtitle files. You can choose from various AI models and languages to generate subtitles or translate existing ones. Behind the scenes, our advanced algorithms ensure speedy and accurate transcriptions and translations. What makes us stand out is our use of client-side audio extraction from movies, thanks to FFmpeg wasm. This means we can generate subtitles faster and more efficiently than many other platforms, providing our users with a smooth and streamlined experience.

In addition to these features, our credit-based payment system adds another layer of convenience. Users have the flexibility to purchase credits, which are then utilized when accessing AI services. This pay-as-you-go approach ensures cost-effectiveness, allowing users to pay only for the specific services they need. The credits never expire, providing users with the freedom to integrate AI services seamlessly into their workflows without the pressure of expiration dates. This unique advantage empowers our users with control, flexibility, and personalized cost-efficiency in their interactions with our platform.

AI.opensubtitles.com supports a wide range of languages. Users can select the desired language for transcription based on their preferences.

Transcription Languages

AWS
  • english
  • abkhaz
  • afrikaans (South Africa)
  • arabic (United Arab Emirates)
  • arabic (Saudi Arabia)
  • armenian (Armenia)
  • azerbaijani (Azerbaijan)
  • bashkir
  • basque (Spain)
  • belarusian (Belarus)
  • bengali (India)
  • bosnian (Bosnia and Herzegovina)
  • bulgarian (Bulgaria)
  • catalan (Spain)
  • chinese (China)
  • chinese (Taiwan)
  • croatian (Croatia)
  • czech (Czech Republic)
  • danish (Denmark)
  • dutch (Netherlands)
  • english (Australia)
  • english (United Kingdom)
  • english (India)
  • english (Ireland)
  • english (New Zealand)
  • english
  • english (South Africa)
  • english (United States)
  • english
  • estonian
  • persian (Iran)
  • finnish (Finland)
  • french (France)
  • french (Canada)
  • galician (Spain)
  • georgian (Georgia)
  • german (Germany)
  • german (Switzerland)
  • greek (Greece)
  • gujarati (India)
  • hausa (Nigeria)
  • hebrew (Israel)
  • hindi (India)
  • hungarian (Hungary)
  • icelandic (Iceland)
  • indonesian (Indonesia)
  • italian (Italy)
  • japanese (Japan)
  • kabyle (Algeria)
  • kannada (India)
  • kazakh (Kazakhstan)
  • kinyarwanda (Rwanda)
  • korean (South Korea)
  • kyrgyz
  • latvian (Latvia)
  • lithuanian (Lithuania)
  • ganda
  • macedonian (Macedonia)
  • malay (Malaysia)
  • malayalam (India)
  • maltese (Malta)
  • marathi (India)
  • mongolian
  • norwegian
  • oriya (India)
  • pashto (Afghanistan)
  • polish (Poland)
  • portuguese (Portugal)
  • portuguese (Brazil)
  • punjabi (India)
  • romanian (Romania)
  • russian (Russia)
  • serbian (Serbia)
  • sinhala (Sri Lanka)
  • slovak (Slovakia)
  • slovenian (Slovenia)
  • somali (Somalia)
  • spanish (Spain)
  • spanish (United States)
  • sundanese
  • swahili (Kenya)
  • swahili
  • swahili
  • swahili (Tanzania)
  • swahili
  • swedish (Sweden)
  • tagalog
  • tamil (India)
  • tatar
  • telugu (India)
  • thai (Thailand)
  • turkish (Turkey)
  • ukrainian (Ukraine)
  • uyghur, uighur
  • uzbek (Uzbekistan)
  • vietnamese (Vietnam)
  • welsh
  • wolof
  • zulu (South Africa)
ASSEMBLYAI
  • english
  • english (Australia)
  • english
  • english (United States)
  • spanish
  • french
  • german
  • italian
  • portuguese
  • dutch
  • hindi
  • japanese
  • chinese
  • finnish
  • korean
  • polish
  • russian
  • turkish
  • ukrainian
  • vietnamese
OPENAI
  • afrikaans (South Africa)
  • arabic (Saudi Arabia)
  • armenian (Armenia)
  • azerbaijani (Azerbaijan)
  • belarusian (Belarus)
  • bosnian (Bosnia and Herzegovina)
  • bulgarian (Bulgaria)
  • catalan (Spain)
  • chinese (China)
  • croatian (Croatia)
  • czech (Czech Republic)
  • danish (Denmark)
  • dutch (Netherlands)
  • english
  • english (United States)
  • estonian (Estonia)
  • finnish (Finland)
  • french (France)
  • galician (Spain)
  • german (Germany)
  • greek (Greece)
  • hebrew (Israel)
  • hindi (India)
  • hungarian (Hungary)
  • icelandic (Iceland)
  • indonesian (Indonesia)
  • italian (Italy)
  • japanese (Japan)
  • kannada (India)
  • kazakh (Kazakhstan)
  • korean (South Korea)
  • latvian (Latvia)
  • lithuanian (Lithuania)
  • macedonian (Macedonia)
  • malay (Malaysia)
  • marathi (India)
  • māori
  • nepali (Nepal)
  • norwegian bokmål (Norway)
  • persian (Iran)
  • polish (Poland)
  • portuguese (Portugal)
  • romanian (Romania)
  • russian (Russia)
  • serbian (Serbia)
  • slovak (Slovakia)
  • slovenian (Slovenia)
  • spanish (Spain)
  • swahili (Kenya)
  • swedish (Sweden)
  • tagalog
  • tamil (India)
  • thai (Thailand)
  • turkish (Turkey)
  • ukrainian (Ukraine)
  • urdu (Pakistan)
  • vietnamese (Vietnam)
  • welsh (United Kingdom)
SALAD
  • english
  • french
  • german
  • spanish
  • italian
  • japanese
  • chinese
  • dutch
  • ukrainian
  • portuguese
  • arabic
  • czech
  • russian
  • polish
  • hungarian
  • finnish
  • persian
  • greek
  • turkish
  • danish
  • hebrew
  • vietnamese
  • korean
  • urdu
  • telugu
  • hindi
  • catalan
  • malayalam

For more information about the languages used by our AI models, please click here

The platform continually tests new and upcoming AI models for translation and transcription, providing users with a diverse selection of options in terms of both pricing and quality. Our platform offers multiple AI models with varying levels of accuracy and features. Users can choose the model that best fits their requirements.

Transcription AI models

  • AWS
  • ASSEMBLYAI
  • NANO
  • OPENAI
  • SALAD

Translation AI models

  • DEEPL
  • AWS

More information about our AI models you can find here.

Our pricing structure is determined by the usage of credits, which is influenced by both the chosen AI model and the duration of the uploaded file. In the case of transcription, the calculation is based on seconds, with each AI model having a distinct rate per second. When dealing with subtitle files, the count is on written characters, excluding timestamps from the calculation.

AI Model Pricing Table

AI Model 1 Minute10000 Chars 10 Minutes100000 Chars 1 Hour1000000 Chars

Please check the pricing details for this platform.

Credits operate as a flexible and user-centric payment method, offering distinct advantages over traditional subscriptions. Users have the ability to purchase credits, which are then utilized when accessing AI services. The beauty of this system lies in its adaptability, allowing users to harness AI capabilities at their own pace without being tied to monthly or yearly subscriptions. These credits never expire, providing users with the freedom to use them whenever needed.

The longevity of credits ensures that users can seamlessly integrate AI services into their workflows without the pressure of expiration dates. Whether it's a short-term project or an ongoing requirement, the credits remain valid indefinitely. This flexibility aligns with varying user needs and eliminates the rush to utilize credits within a specific timeframe.

Furthermore, the credit-based system promotes cost-effectiveness by enabling users to pay for the precise services they consume. Unlike fixed subscription fees, credits are spent based on the specific AI services accessed and corresponding usage. This pay-as-you-go approach guarantees that users only pay for the services they require, offering a personalized and economical solution tailored to individual needs. In essence, credits empower users with control, flexibility, and cost-efficiency when utilizing AI services.

Service Price Calculator

Calculated Price: 0 credits

Yes, AI.OpenSubtitles.com offers trial credits exclusively to VIP users of our main site (OpenSubtitles.org), allowing them to experience the platform before making a purchase. If you are an VIP user please use this page to contact us for a trial.

Please note that purchasing credits for AI.OpenSubtitles.com does not include a VIP account on our main site, OpenSubtitles.org. To access VIP features on our main site, a separate subscription is required, and it comes with a one-year duration.

The platform prioritizes user privacy, ensuring secure processing of files and adhering to rigorous privacy and security measures. Subtitles generated through transcription or translation are exclusively accessible to the user who created them.

AI.OpenSubtitles.com does not retain any login/password information; instead, it employs an OAuth2 system to access user-related data from the site on the root domain.

For further information, please consult the platform's privacy policy.

The platform supports a variety of common audio and video file formats:

  • MP4: A widely used container format for audio and video, as well as subtitles and metadata. It can store various codecs, such as H.264, AAC, MP3, etc. It has the extension .mp4.
  • MKV: A flexible and open container format for audio, video, subtitles, and metadata. It can store almost any codec, such as H.265, VP9, Opus, etc. It has the extension .mkv.
  • WebM: A subset of Matroska designed for web streaming. It can store VP8, VP9, or AV1 video and Vorbis or Opus audio. It has the extension .webm.
  • TS: A standard container format for digital broadcasting and streaming. It can store MPEG-2, H.264, or HEVC video and MP2, MP3, AAC, or AC-3 audio. It has the extension .ts or .m2ts.
  • AVI: An old but still popular container format for audio and video. It can store various codecs, such as DivX, Xvid, MP3, etc. It has the extension .avi.
  • MOV: A container format developed by Apple for audio and video, as well as subtitles and metadata. It can store various codecs, such as H.264, AAC, MP3, etc. It has the extension .mov.
  • FLV: A container format used by Adobe Flash Player for web streaming. It can store H.263, VP6, or H.264 video and MP3 or AAC audio. It has the extension .flv.
  • Ogg: A container format for audio, video, subtitles, and metadata. It can store Vorbis, Opus, Theora, or Daala codecs. It has the extension .ogg or .ogv.
  • WAV: A standard container format for uncompressed audio. It can store PCM, ADPCM, or other audio codecs. It has the extension .wav.
  • MP3: A widely used container format for compressed audio. It can store MPEG-1 or MPEG-2 audio layer III codec. It has the extension .mp3.
  • AAC: A container format for compressed audio. It can store AAC codec. It has the extension .aac or .m4a.
  • FLAC: A container format for lossless audio compression. It can store FLAC codec. It has the extension .flac.

For any inquiries or assistance, you can reach out to the platform's customer support.

Or contact us by eMail: Protected

Ensure that the language selected for generating subtitles from a movie or audio track matches the spoken language. Translation and transcription are distinct processes and cannot be conducted simultaneously. To proceed, transcription must be completed before translating subtitles into another language.

Yes, the platform caters to both personal and commercial users. Review the pricing packages to find the best fit for your usage.

Kindly check the following page to see if your translation or transcription is available there:
Visit: /profile/activities
It's possible that the process was successfully completed on our server but encountered issues when communicating with the front end of our site. Even if your browser crashes, rest assured that your file should still be processed on our server. In the rare instance that you cannot locate your file on the provided page, please inform us, and we will promptly investigate the issue and refund your credits.

Migrating your user login from OpenSubtitles.org to OpenSubtitles.com is quick and easy. Simply follow these steps:

  1. Visit OpenSubtitles.com Login Page.
  2. Click on the “IMPORT FROM OPENSUBTITLES.ORG” button.
  3. Follow the instructions to complete the migration of your account.
Migration Guide

After migration, your existing credits will be availible to your OpenSubtitles.com account, and you can continue to use both logins until OpenSubtitles.org is retired.

Please note, it is not possible to migrate from an .com account to an .org account.

  • AWS Transcribe:
    • Maximum file size: Up to 2 GB
    • Maximum duration: Up to 4 hours per file
  • AssemblyAI:
    • Maximum file size: Up to 2 GB
    • Maximum duration: Up to 5 hours per file
  • Nano:
    • Maximum file size: Up to 2 GB
    • Maximum duration: Up to 5 hours per file
  • Salad (Whisper based):
    • Maximum file size: Up to 1.5 GB (without splitting)
    • Maximum duration: Around 3.5 hours
  • OpenAI (Whisper API):
    • Maximum file size: Up to 25 MB (without splitting)
    • Maximum duration: Around 1.5 hours

Please ensure your files meet these limits for smooth transcription processing.

We regret any inconvenience caused, but it appears that the FFmpeg WASM audio extraction/format conversion task could not be successfully completed. This is likely due to FFmpeg WASM reaching its memory limit, influenced by OS or browser constraints.

FFmpeg WASM is an innovative technology enabling the use of FFmpeg, a robust multimedia processing tool, directly within the browser without requiring installation or server-side processing. However, FFmpeg WASM has limitations, particularly regarding the amount of memory it can utilize. Depending on your OS and browser settings, FFmpeg WASM might face challenges accessing sufficient memory for processing large or complex files, resulting in errors or failures.

Possible solutions:

  • Attempt the task again with a smaller file.
  • Retry the process on a system with more available memory.
  • Alternatively, you can manually extract the audio track using free, open-source software options such as:
    • Shutter Encoder: A cross-platform app (Windows, macOS) that easily extracts audio and converts it to MP3.
    • HandBrake: A cross-platform video conversion tool with audio extraction and MP3 conversion options.
opensubtitles.Com logo

OpenSubtitles.com
(preferred site)

opensubtitles.Org logo

OpenSubtitles.org
(legacy site)

Users with a .com account can access credits from their .org account after completing the account migration process between the sites.