🎬 VideoStudio

📖 VideoStudio Help

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VideoStudio runs entirely in your browser — no uploads, no server. Your files stay on your machine.

🚀 Quick Start

1. Click 📁 Open or drag a video file onto the preview area.
2. Adjust any settings in the right sidebar (trim, quality, volume, color, etc.).
3. Click 💾 Export to process and download the result.

First export takes a moment to load FFmpeg (~30MB, cached after).

✂️ Trim & Transport

• Play/Stop buttons control the preview.
• Scrub slider jumps through the video.
• Trim region — drag the two handles to set in/out points, or click Set In / Set Out to use the current playhead. Reset clears the trim.

📦 Output Format

• Video: MP4, WebM, MOV, MKV, AVI, animated GIF
• Audio-only: MP3, WAV, M4A/AAC, FLAC, OGG Vorbis

🎞️ Video Quality

• Resolution — resize to a preset (keeps aspect ratio) or keep original.
• Quality — CRF slider. Lower = better quality, bigger file. 23 is the default, 18 is visually lossless, 28+ is noticeably compressed.
• Frame rate — optionally force 15/24/30/60 fps.

🔊 Audio

• Volume 0–300% (above 100% can clip — use Normalize to protect).
• Bitrate — 64k (small) to 320k (best).
• Sample rate — 22.05 / 44.1 / 48 kHz.
• Mute audio — strip audio from the output.

🎨 Color & Image

• Brightness / Contrast / Saturation / Gamma / Hue — standard color adjustments.
• Sharpen — positive sharpens, negative blurs.
• Denoise — temporal noise reduction (hqdn3d).
• Transform — flip horizontal/vertical, rotate 90/180/270°.
• Reset color — return everything to defaults.

🎛️ Audio FX

• Fade in / Fade out — up to 10 seconds each.
• Normalize — Dynamic (fast) or LUFS-based broadcast/streaming loudness.
• Bass / Treble — ±20 dB shelf filters.
• 3-band EQ — low (200 Hz), mid (1 kHz), high (8 kHz), each ±20 dB.
• Noise reduction — FFT-based denoise (afftdn).

🎵 Extract Audio

One-click export of the video's audio as a separate file. Respects trim, volume, and audio FX. Choose MP3, WAV, M4A, FLAC, or OGG.

🎚️ Additional Audio

• Add one or more audio files to mix over (or replace) the video's audio.
• Per-track Volume and Delay (seconds from video start).
• Mix mode: "Mix with video audio" blends everything; "Replace" drops the original track.
• Output length matches the video — longer audio is cut, shorter audio ends early.

🖼️ Create Video from Images

• Add 1–10 images; each gets a duration (default is shared, but you can override per image).
• Audio: silent, or upload an audio file to play over the slideshow.
• Choose resolution, FPS, and whether to match the audio length.
• Click Create Video to build an MP4. No video needs to be loaded first.

📱 Mobile / Android

• Keep source files under ~150 MB.
• Export at 720p or lower on phones.
• Trim before exporting — shorter clips use less memory.
• Processing on mobile is slower than desktop.

⌨️ Tips

• Press F1 to open this help anytime.
• All processing is local — nothing is uploaded.
• Watch the log panel at the bottom for detailed FFmpeg output and errors.
• If something fails, check the log, adjust settings, and try again.

Drop a video here, or click Open

Supports MP4, MOV, WEBM, MKV, AVI, and more

Ready. Load a video to begin.