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CutConvert
Post-production file converter

Convert SRT to EBU-STL

Turn SRT subtitles into EBU-STL binary files: GSI header, TTI blocks, and ISO 6937 accented characters, ready for European delivery specs.

Convert your files

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browseSRT filesConverted in your browser. Files never leave your device.About an hour of footage is free. Larger files: $3 each, or Pro $9/month for everything up to 50 MB.

up to 2 files · 100 KB each

free to start · project to project: $5 · every other conversion: $3 · Pro $9/month · pricing

Converting as a guest. A free account has no monthly cap on files within the free size limit.

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Cómo convertir SRT a STL

Convierte un SRT en un archivo EBU-STL conforme a Tech 3264 — el formato de subtítulos que exigen las cadenas europeas. CutConvert genera el bloque GSI y los bloques TTI binarios con codificación de caracteres ISO 6937, que representa correctamente los acentos del español mediante caracteres combinados. La salida está verificada frame a frame contra la cadena de referencia del IRT alemán.

  1. Añade tus archivos SRT

    Arrastra tus subtítulos .srt a la zona de carga o haz clic para seleccionarlos.

  2. Convierte SRT a STL

    Pulsa Convertir. Cada cue se codifica como bloque TTI con tiempos a 25 fps y caracteres ISO 6937.

  3. Descarga el .stl

    Descarga el archivo EBU-STL listo para tu entrega broadcast.

Archivo SRT y Subtítulos EBU-STL, explicados

EBU-STL (Tech 3264) es el formato de intercambio de subtítulos del broadcast europeo: un archivo binario con bloque GSI de metadatos y bloques TTI de 128 bytes por subtítulo. Sigue siendo requisito de entrega en cadenas de toda Europa. Ojo: no confundir con los archivos .stl de impresión 3D — el convertidor detecta y rechaza esos automáticamente.

Genera archivos .stl EBU (Tech 3264) para entrega broadcast europea a partir de subtítulos SRT. Es gratis para empezar, va cifrado en tránsito y convierte un lote completo en un solo ZIP; inicia sesión cuando necesites trabajos grandes o de gran volumen.

Preguntas frecuentes sobre SRT a STL

¿Qué es un archivo EBU-STL?

El formato binario de subtítulos de la EBU (especificación Tech 3264): un bloque GSI de metadatos seguido de bloques TTI de 128 bytes por subtítulo, con timecode a 25 fps. Es el formato de entrega histórico y aún vigente del broadcast europeo.

¿Se conservan los acentos y caracteres especiales?

Sí — EBU-STL usa la codificación ISO 6937, que representa á, é, í, ó, ú, ü, ñ y el resto de caracteres latinos acentuados mediante secuencias de acento combinado. El convertidor gestiona esa codificación automáticamente.

¿Qué tasa de fotogramas usa el STL generado?

25 fps (STL25.01), el estándar del broadcast europeo. Si tu SRT proviene de un master a otra tasa, conviene verificar los tiempos contra el master de entrega.

¿Es gratis?

La conversión broadcast es gratis para probar con archivos pequeños (hasta 100 KB). Para archivos completos, los planes empiezan en 9 $/mes.

Guías para este flujo de trabajo

Why editors trust it

Free to start

Convert everyday batches for free. Create an account when you need large, high-volume jobs.

Batch in, one ZIP out

Convert a batch within your allowance and download a single ZIP, or one file if that is all you need.

Made for editors

Whole timelines from Premiere, Final Cut and Avid with transitions, markers, titles, keyframes, levels, nests and bins; captions that keep their italics, colour, placement and speakers across SRT, VTT, ASS, TTML, iTT, SCC and STL, any of them in, any of them out; transcripts into Premiere with the words the engine timed. Frame rates and timecode handled the way post expects.

Private by design

Files are converted in your browser. Queued files can be saved locally to restore your job after checkout. Conversion metadata helps us diagnose errors; file contents are not uploaded.

Questions, answered

Where are my files processed?

In your browser. The converter runs on your own machine and the file never leaves it; the site only records that a conversion happened. CutConvert never sees, stores, sells or shares your media.

Is it free? Do I need an account?

About an hour of footage per file is free, on every converter: 100 KB of subtitles or captions, 500 KB of Word transcript, 2 MB of transcript JSON, 1 MB of Resolve project, 5 MB of Final Cut XML, with Premiere projects and Avid AAF a little under the hour. CapCut projects are free up to 500 KB, a short edit, since their size follows how much is in the edit rather than its length. Guests get five conversions a month, a free account has no monthly cap within those sizes, and above that project-to-project transfers are $5 per file. Every other conversion is $3, including project files to captions, reports or cut lists, and captions or transcripts into an editor. Pro is $9 a month ($90 a year) for every file type up to 50 MB; Studio is $19 a month ($190 a year) for files up to 500 MB. Paid-file access lasts 24 hours.

What do I get when I convert multiple files?

Drop several files and you get back one ZIP archive containing every converted file. Convert a single file and you get that one file back, no ZIP. Tick extra formats under the output chips and the same ZIP carries every one of them, and a file counts as one conversion whatever it is written to.

Which formats are supported?

Timelines: Premiere .prproj, DaVinci Resolve .drp (as exported, or gzip- or Zstandard-wrapped), Avid AAF and Final Cut FCPXML in; FCP7 XML, FCPXML, Resolve .drp, CMX 3600 EDL and shot-list CSV out. A Premiere or Final Cut edit travels with its transitions, markers, titles, opacity and scale keyframes, clip volume, speed changes, nested sequences, bins, audio channel routing and each file's own frame rate, wherever the output has a place for them; an Avid AAF brings its transitions, markers, clip levels with their keyframes, muted tracks, nested stacks and each clip's own rate. Captions and transcripts, read and written: SRT, WebVTT, SBV, ASS, TTML, DFXP, iTT, SCC, MCC (a second 608 channel comes out as its own file), EBU-STL, Avid caption TXT, CapCut drafts of any size, timed CSV, Word, plain text, Whisper, WhisperX, AssemblyAI, Deepgram, Rev.ai and CapCut JSON, TwitchDownloader chat logs as a chat replay, Premiere transcript JSON and .prtranscript, Rev, Otter and Word-style transcripts, with italics, colour, placement and speakers kept where the output can hold them and measured word timing into Premiere. EDLs become event CSV reports. The capability table lists what every pair keeps.

Can I pick a frame rate?

Yes. For EDL and Avid caption output you can choose 23.976, 24, 25, 29.97, or 30 fps, or let CutConvert auto-detect it from your source.