Release EchoSub 1.0.4 · mPhpMaster/echo-sub

EchoSub shows live, translated captions for anything your PC plays — videos, streams, calls, games. It listens to your speakers, recognizes speech in almost 100 languages, translates it on your own GPU, and shows it in a customizable always-on-top caption box, with a line and a color for every speaker.

What's new in 1.0.4

A copy button on every caption. Move the mouse over the caption box and a small button appears next to each line — the original and the translation. Click it and that line's text goes to the clipboard; the button shows a check mark for a moment. The buttons sit in the box's padding so they never cover the text, they follow the lines while captions slide, and they grow with the box size. Turn them off in Settings → Text & Colors.

Also fixed: moving the mouse onto the box's resize grip (or a copy button) no longer counts as the mouse leaving the box.

Download

EchoSub-Setup-1.0.4.exe (973 MB) — Windows 10/11, 64-bit

SHA-256: F96F26BCD9919537ADE92189CA7CA43D9446BE075EAEEA3000CAA6A51885BB2A

Close EchoSub if it is running, then run the installer (no admin rights needed; you can also install for all users). Installing over an earlier version keeps your settings and models.
Start EchoSub. The first start downloads the AI models (~2.3 GB) in a progress window — you can cancel and it resumes later.
Play anything with speech. Right-click the caption box or the tray icon for the menu.

Windows SmartScreen: the installer isn't code-signed yet, so Windows may show "Windows protected your PC". Click More info → Run anyway. You can verify the file with the SHA-256 above: Get-FileHash EchoSub-Setup-1.0.4.exe.

System requirements

	Minimum	Recommended
Operating system	Windows 10, 64-bit	Windows 11, 64-bit
Processor	64-bit, 4 cores	6+ cores (e.g. Intel Core i5-9400F / AMD Ryzen 5 3600)
Memory (RAM)	8 GB	16 GB
Graphics	None required — CPU with the Small or Base speech model (captions lag several seconds)	NVIDIA GeForce GTX 1060 6 GB or better
Graphics memory	4 GB (default models on an NVIDIA GPU)	6 GB or more
NVIDIA driver	527.41 or newer	Latest
Free disk space	6 GB	10 GB on an SSD
Internet	Once, to download the models (~2.3 GB)	Also for the optional Google Translate engine

Highlights

Any app, any language — WASAPI loopback capture, Whisper large-v3-turbo recognition with automatic language detection (~100 languages).
On-device translation — NLLB-200 (600M / 1.3B), or Google Translate. The original text appears instantly and the translation follows a moment later.
Speakers — each voice gets its own line and color.
Arabic — Moroccan Arabic (Darija) support and optional diacritics (تشكيل).
Caption box your way — fonts, colors and spacing, language labels with flags, 9 screen positions or drag anywhere, autosize, corner radius, padding, smooth slide / fade animations.
Handy — global hotkeys (Ctrl+Alt+H / P / L), caption history and transcripts, click-through lock, auto-hide when nobody talks, cancelable model downloads, self-recovery when an audio device disappears.