Audio & video transcription service

SRT Subtitle Generator - Create SRT Files

Upload any audio or video file and generate a professional SRT subtitle file with millisecond-precise timestamps and automatic speaker labels. Supports MP3, WAV, MP4, AVI, MOV, MKV, and more.

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Secure processing Fast results No setup required
50+ Supported languages
Diarization Workflow quality controls
GDPR Secure private processing

SRT Subtitle Generator - Create SRT Files features

Millisecond Timestamp Accuracy

SRT files use microsecond-level timing to ensure captions sync perfectly with every spoken word - no manual adjustment required.

Automatic Speaker Labels

Each unique speaker is detected and labeled automatically, making multi-person recordings clear and readable in the subtitle file.

All Input Formats Supported

Generate SRT from MP3, WAV, MP4, AVI, MOV, MKV, FLAC, M4A, WebM, and more. No pre-conversion needed.

Industry-Standard SRT Output

Output follows the exact SRT specification accepted by YouTube, Premiere Pro, Final Cut Pro, DaVinci Resolve, and all video players.

50+ Languages

Generate SRT subtitles in English, Spanish, French, German, Portuguese, Arabic, Japanese, Chinese, Hindi, and 40+ more.

Secure Processing

All uploaded media is encrypted and permanently deleted from our servers immediately after the SRT file is generated.

How SRT Subtitle Generation Works

  1. 1

    Upload your media file

    Select your audio (MP3, WAV, M4A, FLAC) or video (MP4, AVI, MOV, MKV) file. Files up to 1 GB are supported.

  2. 2

    Choose options

    Select the spoken language and enable speaker labeling if needed. Choose line break style and max characters per caption line.

  3. 3

    AI generates SRT

    Speech recognition transcribes the audio, assigns timestamps, and formats the output as a standard SRT file.

  4. 4

    Download SRT file

    Download your SRT file instantly - ready to upload to YouTube, import into Premiere Pro, or use in any player.

All Audio & Video Transcription

Why Choose Our SRT Subtitle Generator?

Need to create SRT subtitles from audio or video - automatically? ForgeFile's SRT generator transcribes your media and exports a perfectly formatted, millisecond-precise SRT file in minutes. Ready to upload to YouTube, Vimeo, or any video editing software.

Upload MP3, WAV, MP4, AVI, MOV, MKV, or any other popular format - our AI speech recognition handles the rest. Speaker labels, line breaks, and timing are applied automatically to produce industry-standard SRT output.

What Is SRT and Why Does It Matter?

SRT (SubRip) is the most widely supported subtitle format. It is accepted by YouTube, Vimeo, Premiere Pro, Final Cut Pro, DaVinci Resolve, and virtually every video player and editing tool. A well-timed SRT file improves accessibility, boosts SEO for video content, and enables localization into any language.

Key Features of ForgeFile SRT Generator

  • Millisecond timestamp precision - Captions sync accurately with every spoken word, no manual adjustment needed.
  • Automatic speaker labels - Labels each speaker in multi-person recordings for clear, readable subtitles.
  • All major input formats - MP3, WAV, M4A, FLAC, MP4, AVI, MOV, MKV, WebM, and more.
  • 50+ languages - Generate SRT subtitles in English, Spanish, French, German, Portuguese, Arabic, Japanese, and more.
  • Industry-standard output - SRT files follow the exact specification accepted by all major platforms and editing tools.
  • Secure & private - All files encrypted and permanently deleted after processing.

Frequently Asked Questions - SRT Subtitle Generation

What input formats can I use to generate SRT files?

We accept all major audio formats (MP3, WAV, M4A, FLAC, OGG, AAC, WMA) and video formats (MP4, AVI, MOV, MKV, WebM). Upload your file directly - no conversion needed.

How accurate are the SRT timestamps?

Timestamps use millisecond precision (e.g. 00:01:23,456) and are aligned to the actual speech start and end times. For clear recordings, caption timing is typically accurate to within 50–100ms, requiring minimal manual adjustment.

Can SRT files include speaker labels?

Yes. Enable speaker diarization and each caption block is prefixed with the speaker label (e.g. [Speaker 1]: ...). This is especially useful for interviews, podcasts, and panel discussions.

What subtitle formats do you output?

The primary output is SRT. You can also download VTT (WebVTT) and plain text simultaneously from the same upload.

Is there a file size limit?

Files up to 1 GB are supported for SRT generation. For larger files, contact us for batch or enterprise options.

Can I translate the SRT file after generating it?

Yes. After downloading your SRT file, you can use our SRT Translation service to translate the subtitles into 50+ languages while preserving all timestamps.

SRT Subtitle Generator - Create SRT Files output

Try ForgeFile's SRT generator free - no registration required. Upload and download in minutes.

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