Release EchoSub 1.0.2 · 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 1.0.2

Zoom the caption box: hold Shift and turn the mouse wheel over the box to make the box and its text bigger or smaller (50–300 %). The value is also in Settings → Position & Alignment → Box style → Size (zoom).
Google Translate limits handled: when Google answers "too many requests", EchoSub spaces out and retries requests, pauses Google for a while after repeated refusals, and meanwhile translates offline with an NLLB model you have already downloaded. It switches back to Google automatically.
Translation errors now appear as a short message that disappears after a few seconds, instead of a long message that stayed in the caption box.

Download

EchoSub-Setup-1.0.2.exe (973 MB) — Windows 10/11, 64-bit

SHA-256: 554420654BA134784D35A49B1B9C774BED8CCDA2E1BE4C0F652FF34EB27FC3D6

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-1.0.2.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.