FLV Metadata Remover
Delete FLV onMetaData, encoder notes, cue points, and comments while keeping video/audio streams intact.
Drag & drop a file here, or click to select
Max file size: 100 MB
Looking to view metadata instead? Go to the Metadata Viewer.
Why remove FLV metadata?
FLV files can store cue points, encoder tags, and comments that reveal sources or workflows. Cleaning removes them while preserving streams.
Share streams without traces
Strip cue points and encoder notes before republishing FLV archives.
Protect workflow details
Remove application identifiers and comments left by capture tools.
Deliver clean legacy files
Share older web videos without embedded scripting metadata.
Secure FLV cleaning
We scrub FLV metadata blocks while preserving streams, then delete the temporary copy after download.
Upload your FLV
Select an FLV file. Uploads are encrypted and not stored after processing.
Remove FLV metadata
We clear onMetaData, cue points, encoder/application tags, and comments from the FLV container.
Keep video/audio untouched
Cleaning is metadata-only, so streams, bitrate, and resolution remain the same.
Download & purge
Download the cleaned FLV instantly; the temporary server copy is wiped immediately.
What FLV metadata do we remove?
We clear FLV header and script data that expose origin or tooling while keeping streams intact.
- onMetaData entries including duration, creation, and encoder notes
- Cue points and key/value script data
- Comment and description fields stored in FLV tags
- Encoder/application identifiers and custom properties
- Optional thumbnails or preview images in metadata blocks
- Custom user data added by streaming or recording tools
- Language or track description tags
- XMP or additional script data if present
What FLV onMetaData blocks hide
FLV was the dominant web-video format from 2005 to 2014, and its metadata model is unusually literal: an AMF-encoded onMetaData script tag at the start of the stream that is effectively a key/value dictionary encoded in JavaScript object notation. Server-side streaming tools (Wowza, Adobe Flash Media Server, Red5) wrote the originating server name, the license key identifier, the rtmp session ID, and the stream key directly into that block. Recording tools (OBS classic, XSplit, Fraps legacy) wrote the capturing machine's Windows computer name and the application version. All of it ships inside the file.
FLVs also carry cue points — named markers with associated parameter objects — that were often used to encode ad-insertion points, analytics beacons, and chapter names; many still contain live ad-server URLs and campaign IDs from the streams they were captured from. Cleaning rewrites the script data tag with a minimal onMetaData (just duration, width, height, videocodecid, audiocodecid), removes cue points, strips XMP packets, and leaves the H.264/VP6 video and MP3/AAC audio tags untouched.
FAQs
Will cleaning change playback?
No. Streams stay intact; only metadata blocks are removed.
Do you remove cue points and onMetaData?
Yes. We clear onMetaData, cue points, and custom key/value tags stored in the FLV header.
Does cleaning affect size?
Only minimally if metadata or thumbnails are removed; video quality stays the same.
Can you remove encoder or app notes?
Yes. Encoder/application identifiers and comments are stripped from the metadata.