Desktop app · FreeBrushLLM Video Studio —Local video, audio & subtitle toolbox
A free, offline toolbox for video, audio and subtitle processing. Convert, compress, merge, trim, normalize loudness, fix subtitle encodings — 100% local processing, zero network requests.
- 25+ tools
- 100% local processing
- 9 languages
- Zero network requests
macOS (Apple Silicon) · Windows 11 (x64 / ARM64)
BrushLLM Video Studio
100% local processing — your media never leaves the machine. FFmpeg binaries are pinned and SHA-256 verified, the engine runs a pause/resume job queue, and 175 automated tests keep the toolbox honest.
Video
Convert
MP4, MKV, WebM, MOV and AVI with H.264, H.265, VP9 or AV1 codecs.
Compress
Quality-based (CRF) or target-bitrate compression with live size estimates.
Merge & trim
Join clips in order, cut segments with frame-accurate in/out points.
Crop, scale & rotate
Geometry fixes for wrongly-oriented or padded footage.
Speed change
0.25× to 4× playback speed with audio pitch correction.
Frames, GIFs & WebP
Extract still frames, or turn clips into animated GIF/WebP.
Audio
Extract & convert
Pull audio to MP3, M4A, FLAC, WAV, OGG or Opus.
Loudness normalization
EBU R128 normalization for consistent volume across files.
Volume & gain
Boost or attenuate without re-encoding the video where possible.
Mute or replace
Strip audio tracks, or swap in a new soundtrack.
Trim
Cut audio segments with the same in/out precision as video.
Subtitles
Embed or burn
Attach soft subtitle tracks, or hard-burn them into the picture.
Convert formats
SRT, VTT, ASS, SSA and TTML — with a dependency-free subtitle engine.
Fix encodings
Repair legacy GBK/Big5 files into clean UTF-8 automatically.
Shift timing
Nudge subtitles earlier or later in bulk, synced to your video.
Extract
Pull existing subtitle tracks out of any container.