SRT vs SUB — Comparison & Free Converter
Fast, instant SRT (SUBRIP) to SUB (MICRODVD) conversion. No signup required. Just drop your .srt file and get .sub in seconds.
Batch Settings
SRTファイルをSUB形式へ変換する際、字幕の精度や表示の一貫性にお悩みではありませんか？当社の変換ツールは、動画コンテンツをより多くのプラットフォームやデバイスで快適に楽しむための橋渡しをします。特に、アニメやドラマの視聴体験を損なわないよう、細やかな時間軸の調整や文字コードの最適化を重視しています。手軽な操作で、お手持ちのSRTファイルをSUB形式へと変換し、表現豊かな映像作品の世界を、より深く、より多くの人々と分かち合いましょう。複雑な設定は不要です。直感的なインターフェースで、誰でも簡単に高品質な字幕ファイルを生成できます。さあ、あなたのコンテンツを次のレベルへと引き上げましょう。
- アニメファンによる自作字幕の共有
- ビジネスプレゼンテーション資料の多言語化
- 縦書き表示対応デバイスでのコンテンツ視聴
日本では、特に映像作品の字幕において、フォントの種類や表示位置へのこだわりが強く見られます。SRTからSUBへの変換では、これらの視覚的要素が適切に引き継がれるかどうかが重要視される傾向があります。
About SRT (SUBRIP) to SUB (MICRODVD) Conversion
SRT or SUB — which format should you use? The answer depends on your needs. Here's a quick breakdown.
SRT (SubRip) is the simplest subtitle format — plain text with timestamps. It has universal platform support. SUB is a widely used file format. It has common platform support.
So when should you convert SRT to SUB? This conversion is ideal when you When you need a SUB file. This conversion helps you convert between formats quickly.
Converting SRT to SUB maintains high quality with CocoConvert's optimised encoder settings.
If you've decided SUB is the right choice, CocoConvert makes the conversion effortless. Upload your .srt file, pick SUB, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert SRT (SUBRIP) to SUB (MICRODVD)
- 1
Choose your SRT file
Upload your .srt file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to SUB
Select .sub from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large subtitle / caption files.
- 4
Get your SUB file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert SRT (SUBRIP) to SUB (MICRODVD)
Your SRT file is decoded and re-encoded as SUB.
Your SRT file is uploaded and validated
The file is decoded (parsed into its raw data)
The data is re-encoded in SUB format
The converted file is ready for download
Format Comparison
SRT (SubRip)
.srt file
| Extension | .srt |
| MIME Type | application/x-subrip |
| Category | Subtitle / Caption |
SUB (MicroDVD)
.sub file
| Extension | .sub |
| MIME Type | text/x-sub |
| Category | Subtitle / Caption |
Should You Convert SRT (SUBRIP) to SUB (MICRODVD)?
When to Convert
- ✓When you need a SUB file
Frequently Asked Questions
Should I use SRT or SUB?
It depends on your goal. SRT preserves full quality. SUB preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is SUB higher quality than SRT?
Not necessarily. Converting SRT to SUB maintains high quality with CocoConvert's optimised encoder settings. Quality depends on the compression type and settings, not just the format name.
Can I convert SRT to SUB on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for SRT to SUB?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for SRT to SUB?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.