100% Client-Side Non-Linear Video Studio • Zero Watermarks • Zero Cloud Uploads

CriticStudio Video Editor & Mastering Studio

Edit any video 100% locally in your browser: frame-accurate filmstrip timeline, 9:16 blurred background fill, 12 cinematic 3D LUTs, green-screen chroma key, SRT caption burner, and live broadcast scopes.

Drop a single video file here to open in Video Studio, or browse

Supports MP4, WEBM, MOV, MKV, AVI, FLV, WMV, M4V, MPEG, TS, OGV, 3GP, GIF, WEBP, APNG & Audio tracks. Need to convert multiple files at once? Switch to the Batch Converter tab.

Select Video from Device

master-video.mp4 MP4 1280×720 00:06.00 2.4 MB

00:00.00 / 00:00.00 F 0

Live Broadcast Telemetry Scopes

Playback & Render Speed (1x)

Smooth Audio Fade-In / Fade-Out Envelopes

Fade-In (0s)

Fade-Out (0s)

💡 Multi-Segment Split & Stitch Tip

Use the timeline below to drag the amber IN and OUT handles, or position the red playhead anywhere and click Split at Playhead to cut out unwanted middle sections.

All 6 Inspector tabs apply simultaneously during export. 60fps GPU Canvas

IN: s

OUT: s

00:06.00 (1x)

Zoom: 1.0x

Target Format (27)

Resolution

Frame Rate

Quality / Bitrate

Output Filename

Multi-File Batch Queue • 27 Video, GIF & Audio Formats • Per-File Quick Trim & Volume

CriticStudio Batch Video & Audio Converter

Batch convert multiple video files between 27 studio, web, animated image, and audio formats in your browser with millisecond trim, 200% soft-knee volume boost, and WSOLA pitch shifting.

Convert From (Source)

Convert To (Target)

Drop multiple video or audio files here for batch conversion, or browse

Supports all 27 formats (MP4, WEBM, MOV, MKV, AVI, FLV, WMV, GIF, WEBP, APNG, MP3, WAV, FLAC, M4A, AAC, OPUS, OGG, AC3). Expand any queued card for quick trim, volume & pitch!

Add Files to Batch Queue

27 Supported Containers & Codecs

Video, Animated Image & Audio Format Specifications

Every container format supported by CriticStudio's single-video NLE and batch converter, plus our interactive 702-route SEO directory.

16 Video Containers

Cinema, Broadcast & Web Video

Full frame-accurate decoding, 60fps canvas compositing, and muxing across modern and legacy video containers.

MP4 WEBM MOV MKV AVI FLV WMV M4V MPEG MPG TS M2TS OGV 3GP ASF VOB

3 Animated Image Formats

Looping GIF89a, APNG & WebP

Pure-JavaScript GIF89a LZW quantization with ordered Bayer dithering and 24-bit RGBA Animated PNG chunk assembly.

GIF (GIF89a LZW) WEBP APNG (24-bit)

8 Direct Audio Formats

Studio Audio Extraction & Mastering

Extract audio from any video with 200% soft-knee limiting, WSOLA constant-tempo pitch shifting, and 3-band EQ.

MP3 WAV FLAC M4A AAC OPUS OGG AC3

Direct Deep-Link Tools & 702 Conversion Routes

Interactive Studio & Format Route Directory

Pure-Code Video & Audio Engineering

CriticStudio Knowledge Base & Mastering Guide

How CriticStudio edits, grades, keys, and encodes HD/4K video 100% locally inside your browser with zero external server uploads.

01 / COLOR SCIENCE & 3D LUTS

Real-Time 60fps Pixel Grading & Scopes

Every video frame is composited through a 10-parameter color pipeline (Exposure, Contrast, Saturation, Vibrance, Warmth, Tint, Highlights, Shadows, Sepia, Vignette) and blended with 12 cinematic 3D LUT curves while live RGB Parade, Luminance Waveform, and Histogram scopes measure broadcast legality in real time.

02 / YCBCR CHROMA KEYING

Green/Blue Screen Removal & Spill Suppression

Instead of naive RGB thresholding, CriticStudio converts pixels into YCbCr color space to measure Euclidean chrominance distance (`Cb, Cr`), applying smooth alpha feathering and automatic green/blue spill desaturation on hair and edges.

03 / STEREO WSOLA & 200% LIMITER

Constant-Tempo Pitch & Soft-Knee Mastering

Our custom Waveform Similarity Overlap-Add (WSOLA) engine shifts voice or music pitch from `-12` to `+12` semitones using Hann-windowed cross-correlation without altering video duration, paired with a `tanh` soft-knee mastering limiter for distortion-free 200% volume boosts.

Got Questions?

Frequently Asked Questions

Everything you need to know about CriticStudio's Single-Video NLE Studio and Batch Converter.

Never. CriticStudio executes 100% locally inside your web browser using HTML5 Canvas, Web Audio DSP, MediaRecorder, and custom binary muxers. Your private videos never leave your device.