Browser Tab, Window & Full Screen Recorder

For those opening the store 👋 Browser Tab, Window & Full Screen Recorder captures the tab, window, or full screen you pick in Chrome's screen-share dialog—video plus system/tab audio—as one stream, saved as WebM or MP4. Recording through split and save lives in a single pop-up. Key points by section: 【📋 Quick Reference】 ・🎬 Record: Tab, window, or screen + audio → WebM/MP4 via MediaRecorder. ・🌍 UI: 11 languages (en, ja, de, fr, es, es-419, pt-BR, ko, zh-CN, zh-TW). ・🆓 Free: 15 minutes per session (hard cap); audio fixed at 32 kHz; video fixed at 720p; High quality preset off; silent capture & auto-split matrix are Pro-only. ・⭐ Pro: User-defined session limits (including unlimited); 48 kHz+ sample rates, AUTO/1080p, High quality, silent capture, cursor hide, and auto-split/stop matrix. ・💾 Long sessions: Small chunks written to IndexedDB to reduce memory use. ・✂️ Auto split: Darkening, still video, or silence—a matrix of split and stop rules (Pro). ・🔇 Silent recording: Mute the tab’s speakers while recording (Pro; audio still goes to the file). ・📤 Export: WebM/MP4, in-browser WAV/MP3 conversion, and ZIP download of all segments. ・⚙️ All-in-pop-up: Presets, quality, audio, splitting, preview speed/volume, clips—no separate app. 【✨ What This Extension Can Do】 Browser Tab, Window & Full Screen Recorder is an extension that allows you to select the tab, window, or entire screen from Chrome's screen sharing dialog, recording the video and the system/tab audio as a single unit. It is ideal for situations where you want to save the video displayed on the browser screen as a video file (WebM or MP4). We have consolidated the entire process—from recording to splitting to saving—into a single pop-up, anticipating uses such as: ・📡 Archiving livestreams and webinars ・📚 Saving online lectures and training sessions ・📋 Screen recording for operational procedures and manuals ・🎯 Reducing the number of retakes for demos ・🎬 Screen recording of long-form videos played in the browser (e.g., anime, dramas, movies) (*Please adhere to the terms of service and copyright of the respective services when viewing or recording*) 💡 Playback and UI tips: ・For entertainment videos, transitions (like scene changes or before/after commercials) and silent sections are easy to spot, making them compatible with automatic splitting. You can also select settings that easily capture background music (BGM) and dialogue together using stereo audio. ・In addition to starting/stopping recording, the interface is designed for ease of use, allowing control over audio quality, video quality, automatic splitting, and saved clips without switching to a separate application. 【🖥️ Capturing Screen and Audio】 You can overlay a microphone onto the stream captured via screen sharing, if necessary. The microphone is captured as a separate stream from the screen and then merged with the video and passed to MediaRecorder using Web Audio (AudioContext) into a single audio bus. ・📺 Ability to record the video from a tab or a full-screen display directly (the sharing range is selected in the OS screen sharing dialog). ・🔊 Mixing tab audio and live commentary within the browser only (easy to start without a virtual audio device). ・🎥 Video sources support combinations such as screen sharing plus camera only, or audio only. 【🎬 Recording Format and Quality】 The core technology uses WebM (VP9 video + Opus audio) via the browser's standard MediaRecorder. ・🔉 Audio (Default): Settings based on approximately 256kbps class ・📊 Video Bitrate: Selectable from Automatic / Low Capacity / High Quality ・📐 Resolution: Automatic, or fixed at 1280×720 / 1920×1080 ・🖱️ Cursor: Visible / Hidden (On for operation demos, Off for video viewing like movies/dramas, etc.) For video content, selecting a High Quality preset or fixed 1080p makes it easier to retain the details of the screen video, which can then be organized as a "reviewable video file" alongside stereo audio. 【🎧 Audio Quality and Modes】 We prioritize "high-quality listening," so echo removal, noise suppression, and auto-gain are generally set to off during recording. ・🎚️ Sample Rate: Default is 48kHz. Can be changed from the UI to 44.1kHz / 32kHz / 22.05kHz, etc. ・🎛️ Channels: Default is Stereo (2ch), but can also be switched to Mono. ・🎤 Input Mode: Tab Audio Only / Tab + Microphone ・📈 It is easy to start recording after confirming the input level using the level meter, preventing inputs that are too quiet or too clipped. ・🔇 Silent recording: Optional checkbox to mute the active tab’s speakers during capture so sound does not leak to the room, while the recording file still receives tab audio. The previous mute state is restored when you stop. 【⏱️ Long Recording, Storage, and Limits】 To prevent the data from accumulating only in memory, recording data is written sequentially to IndexedDB in small chunks. ・🧠 Reduces memory pressure even during long programs or meetings. ・💾 If IndexedDB writing fails, it falls back to memory, attempts to continue while notifying the user. ・🛡️ The fallback mode has a memory limit and a guard to stop excessive growth. ・⏰ Recording time limit is specified as "Hours + Minutes" and automatically stops upon reaching the limit. ・🔢 Countdown before starting allows time for preparation and microphone checks. ・⏸️ When paused, the limit timer also stops, and the remaining time is reset upon resuming. 💎 Free / Pro (Key Points) ・🆓 Free: 15-minute hard cap per session; sampling rate fixed at 32 kHz; resolution fixed at 1280×720; High video quality preset unavailable; mouse cursor always included; silent capture and auto-split/stop matrix unavailable (manual split only). ・⭐ Pro: Removes the above limits—custom session length (including unlimited within UI safety caps), 48 kHz and other sample rates, AUTO/1080p, High quality, optional cursor hide, silent capture, and the full auto-split/stop matrix. ・📜 MP4 export and advanced save options follow the in-app guide and license UI (s…