EPUB vs SUB
Ein detaillierter Vergleich von EPUB eBook und MicroDVD Subtitle — Dateigröße, Qualität, Kompatibilität und welches je nach Workflow zu wählen ist.
EPUB eBook
eBooksEPUB is the open standard for reflowable digital books. It adapts text to any screen size and is supported by most e-readers except Kindle. EPUB 3 adds support for multimedia and interactivity.
Über EPUB-DateienMicroDVD Subtitle
Documents & TextSUB (MicroDVD) is a subtitle format that uses frame numbers for timing instead of timestamps.
Über SUB-DateienVorteilsvergleich
EPUB Vorteile
- Open standard — no vendor lock-in, no DRM required.
- Reflowable text — adapts to any screen size, font size, or orientation.
- Rich typography via CSS, embedded fonts, and SVG.
- Accessibility-first: native support for screen readers, adjustable text, and alt-text.
- Universal across every non-Kindle ebook reader and library app.
SUB Vorteile
- VobSub preserves DVD subtitle appearance exactly.
- MicroDVD is trivially editable text.
- Universal player support (VLC, mpv, MPC).
- Historical format for DVD-era subtitle preservation.
Einschränkungen
EPUB Einschränkungen
- Kindle does not support EPUB natively (Amazon wants you to convert to AZW3).
- Fixed-layout EPUBs (for children's books, comics) are awkward to author.
- Rendering quality varies between apps — some CSS works everywhere, some does not.
- Adobe DRM (ADEPT) or Apple FairPlay are optional layers that complicate portability.
SUB Einschränkungen
- Bitmap subtitles (VobSub) cannot be edited as text.
- MicroDVD frame-based timing breaks on framerate changes.
- Two incompatible formats sharing one extension causes confusion.
- Superseded by SRT and ASS for editing and modern streaming.
Technische Spezifikationen
| Spezifikation | EPUB | SUB |
|---|---|---|
| MIME type | application/epub+zip | text/x-microdvd (MicroDVD); image/vnd.dvb.subtitle (VobSub) |
| Extension | .epub | .sub (paired with .idx for VobSub) |
| Container | ZIP archive | — |
| Markup | XHTML 1.1 (EPUB 2); HTML5 (EPUB 3) | — |
| Standards | IDPF/W3C EPUB 2.0.1, 3.0, 3.2, 3.3 | — |
| Variants | — | MicroDVD (text), VobSub (bitmap) |
| Common conversion | — | OCR VobSub → SRT |
Typische Dateigrößen
EPUB
- Novel (300 pages, text only) 200-800 KB
- Illustrated reference book 5-30 MB
- Fixed-layout children's book 30-100 MB
SUB
- MicroDVD .sub for 2-hour movie 50-100 KB
- VobSub .sub (2-hour movie) 1-10 MB
- VobSub .idx metadata 50-200 KB
Bereit zum Umwandeln?
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Häufig gestellte Fragen
EPUB (Electronic Publication) is the open standard eBook format maintained by the W3C. It supports reflowable text that adapts to screen size, embedded fonts, images, and interactive content, making it the most widely supported eBook format globally.
EPUB (Electronic Publication) is the abrir padrão eBook formato maintained pelo W3C. It suporta reflowable text that adapts to screen size, embedded fonts, images, e interactive content, making it the most widely suportado eBook formato globally.
EPUB files open in Apple Books, Google Play Books, Calibre (free), Kobo eReaders, and Adobe Digital Editions. Note that Amazon Kindle does not natively support EPUB, so conversion to MOBI or AZW3 is needed.
EPUB arquivos abrir in Apple Books, Google reproduzir Books, Calibre (free), Kobo eReaders, e Adobe Digital Editions. Note that Amazon Kindle does not natively support EPUB, so conversion to MOBI ou AZW3 is needed.
Use EPUB for reading on phones and eReaders since it reflows text to fit any screen. Use PDF for documents with fixed layouts like textbooks with precise formatting, scanned pages, or documents intended for printing.
Use EPUB para reading on phones e eReaders since it reflows text to fit any screen. usar PDF para documents com fixed layouts like textbooks com precise formatoting, scanned pages, ou documents intended para printing.