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How your files are processed
Files are uploaded and processed on our servers, then made available for download.
What this tool does
FLV clips from drones, phones, or screen capture often carry more Mbps than mobile playback ever shows. Staying in FLV cuts bytes without swapping formats.
Use bitrate, percent-size, or CRF targets when the job form lists them.
- FLV output stays FLV — The container remains FLV; size changes come from lower bitrates, resolution tweaks, or encoder efficiency—not from switching formats.
- Bitrate drives megabytes — Video and audio bitrates are the main levers for how large the file is per minute of content.
- Resolution and motion — High motion and high resolution need more bits for clean results; lowering either saves space inside the same container.
How to compress FLV files?
- Choose file — select a FLV file that matches this compressor (allowed extensions apply).
- Adjust options — set quality, level, or advanced options if shown, then compress.
- Download — grab the smaller file from your job page when processing completes.
Why compress FLV files?
Expect detail loss whenever you chase smaller MBps—HDR grades and sharp crops should stay on camera originals or ProRes intermediates. Preview final playback on the TV or phone your viewers actually use.
Common uses for FLV compression
- Upload FLV clips to portals that cap upload size without switching extensions.
- Share FLV drafts through links that expire faster on oversized originals.
- Shrink FLV footage before offline viewing on devices with tight storage.
- Prepare FLV previews when reviewers asked for the smallest possible file in this format.
- Archive FLV references that must stay in this container for downstream tools.
- Batch lighter FLV copies before handing them to editors on bandwidth-limited connections.
Will compressing FLV (FLV) affect quality?
Expect softer grain and halo edges whenever you squeeze Mbps hard.
Night interiors and sports pans fail before talking-head shots. Mild presets usually survive Instagram playback; ugly blocking shows up fast on 85-inch TVs.
How FLV video compression works
Source encoding
Editors export fat timelines on purpose: wide GOP spacing, stereo stems, and headroom for color. Delivery rarely needs every megabit those masters retain.
What changes inside the file
FLV is a legacy Flash container—compress mainly for archival handoff, not for modern HTML5 delivery. Workers relax Mbps targets, shrink frame sizes, or shorten GOPs—all without renaming the extension.
Constant-quality modes chase stable visuals across scenes.
Hard caps suit CDN contracts but can spike noise on sprints or fireworks footage.
Troubleshooting
- Already-optimized video may not shrink much: some FLV files are already near a practical bitrate.
- Quality trade-offs are expected: stronger compression can introduce blocking or smearing.
- Long videos take longer: duration and resolution strongly affect processing time.
- Compatibility: if playback fails, try a more widely supported target via a converter before compressing again.