Step 1: Provide your FLV files using the button above or by toss and let go.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Fetch your converted BMP files.
FLV to BMP Conversion FAQ
How do I extract individual frames from FLV as BMP images?
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Upload the FLV file and the converter exposes a frame-extraction picker: every Nth frame, frames at specific timestamps, or one frame per second. Each chosen frame is decoded from the FLV video stream, encoded as a separate BMP file, and bundled as a ZIP for download. FLV is the Flash Video container that carried essentially all web video from roughly 2003 until Flash was switched off at the end of 2020. BMP is the Windows Bitmap, the raw raster format built into Windows since 1985.
Can I get the BMP frames without the subtitles?
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Only if the FLV never had them burned in, because FLV has no selectable subtitle stream to switch off. Anything an FLV shows on screen is in the picture itself, so it is in every BMP the extraction produces and no setting removes it afterwards. Where a separate subtitle file exists alongside the video, extract from a source that kept the two apart and the frames come out clean. No current browser, phone or TV can play FLV — anything still in this container has to be moved out of it to remain watchable.
How big will the BMP files be?
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Larger than you might expect, because BMP keeps every pixel exactly rather than approximating. A 1080p still lands around 2-5 MB and a 4K still around 6-15 MB, so a long extraction run adds up quickly. That is the right trade when the images feed further processing, and the wrong one when they are going straight onto a web page. BMP usually stores completely uncompressed pixel rows with a small header, which is why it is so simple to parse.
At what resolution do the extracted BMP images come out?
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Same resolution as the source FLV: a 1080p FLV produces 1920x1080 BMP frames, a 4K FLV produces 3840x2160 BMP frames. The converter does not upscale or downsample — pixel dimensions are pulled straight from the decoded frame. Use /resize-image/ after extraction if you need smaller thumbnails.
Can I extract every frame of an FLV as BMP?
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Yes, but mind the file count — a 30 fps 1-minute FLV produces 1,800 BMP frames. We pack them into a single ZIP archive automatically. For longer clips, prefer the "1 per second" preset (60 frames per minute) or pick specific timestamps. An hour of FLV at every-frame would produce ~100,000 BMP images.
Will the BMP frames preserve the FLV colour grading?
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Yes — colour is decoded with the same matrix the source FLV stream advertises (BT.709 for HD, BT.2020 for 4K HDR). HDR sources are tone-mapped to SDR when extracting to a BMP that cannot store HDR pixel ranges natively (JPG, PNG-8). Target high-bit PNG-16 or TIFF if you need to keep extended dynamic range.
How big is one extracted BMP frame on disk?
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Depends on resolution and BMP codec choice: a 1080p PNG frame is 2-5 MB lossless, a 1080p JPG at quality 85 is 200-500 KB. Multiply by frame count to size the ZIP — at the extreme, every-frame PNG extraction of a 10-minute 1080p FLV is roughly 50 GB and gets split across multiple ZIPs.
Does the extracted BMP keep camera EXIF metadata?
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An FLV container does not carry per-frame EXIF the way a still camera does, so the BMP files come out with empty EXIF blocks. The converter does embed a `creation_time` field pointing at the source frame timestamp, so you can re-sort the bundle in chronological order or correlate with subtitle / chapter markers.
How long does frame extraction from FLV to BMP take?
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Frame decoding is fast — typically 20-30% of source duration. A 5-minute FLV -> BMP bundle finishes in about 1 minute regardless of how many frames you pick, because the bottleneck is the BMP encoder writing many small files in parallel, not the FLV demuxer.
Can I extract frames at exact timestamps inside the FLV video?
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Yes — the advanced timestamp option accepts a comma-separated list (e.g. `00:01:23, 00:05:00, 00:10:42.5`) and produces one BMP file per timestamp. Useful for chapter thumbnails, scene reference shots, or building a contact sheet for review.
Is my FLV private during frame extraction?
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Yes — same privacy model as every conversion. Source FLV and the extracted BMP bundle are processed in isolated workers and deleted within minutes of completion.
Why are my extracted BMP frames blurry?
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Almost always motion blur baked into the source FLV (the camera or subject was moving while that frame was captured). Try picking timestamps from static scenes, or extract several adjacent frames and pick the sharpest. The pipeline does not synthesize detail that is not in the original FLV.
