How to convert Flash Video (FLV) to WebM
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Upload your file
Drag and drop a file or click to select one. Keep this page open while the file uploads and converts.
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Convert Flash Video (FLV) to WebM
NexMedia converts Flash Video (FLV) to WebM on its own servers. Processing time depends on the file size and how busy the queue is.
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Download the converted file
When the conversion finishes, the download appears on this page. Your converted file is kept for 2 hours, then deleted.
About Flash Video (FLV)
Flash Video (FLV) is the container Adobe Flash Player used to stream video on the web, typically with H.264 or the older Sorenson Spark and VP6 codecs.
Videos saved from websites of the Flash era and from some older streaming and recording tools.
Adobe ended Flash Player at the end of 2020 and browsers removed it, so FLV files need a converter or a desktop player such as VLC.
Convert FLV to WebM online free, no account required — WebM is an open, royalty-free web video format with VP8, VP9 or AV1 video and Opus or Vorbis audio.
Change FLV to WebM without losing quality — convert FLV to WebM free in your browser.
Why won't my old FLV videos play anywhere anymore? Flash Player was retired at the end of 2020 and browsers dropped support, so the only practical way to keep them is converting to MP4.
About WebM
WebM is an open, royalty-free video format developed by Google and based on the Matroska container. It holds VP8, VP9 or AV1 video with Vorbis or Opus audio.
It is made for the web: all major browsers play it in the HTML video element, and it is common for screen recordings and short clips.
WebM allows only its own small set of codecs, so H.264 video or AAC audio has to be re-encoded to fit.
Why convert video to WebM for a website? Browsers play it without plugins, and VP9 or AV1 compresses smaller than H.264 at the same quality, so pages load faster.
What changes when you convert FLV to WebM
- The FLV is re-encoded into WebM at the default quality settings, so the result looks close to the original but is not bit-identical.
Settings you can change
Before you convert FLV to WebM, you can adjust: Video codec, Rate control, Quality (CRF), Video bitrate, Resolution, Width, Height, Scale fit, Frame rate, Encoder preset, Audio codec, Audio bitrate, Trim start, Trim duration, and Remove metadata.
Limits
Each plan sets a maximum file size and a number of conversions per day, and video and audio files also have a maximum length. Guests can convert files up to 100 megabytes and 5 per day; a free account raises this to 500 megabytes and 25 per day; paid plans go up to 100 gigabytes.
Your converted WebM file is kept for 2 hours, then deleted.
FLV to WebM: questions and answers
Does converting FLV to WebM reduce quality?
The FLV is re-encoded into WebM at the default quality settings, so the result looks close to the original but is not bit-identical.
What is the difference between FLV and WebM?
FLV is the Flash Video format of the Adobe Flash Player era. WebM is an open, royalty-free web video format with VP8, VP9 or AV1 video and Opus or Vorbis audio.
Can I change the settings when converting FLV to WebM?
Before you convert FLV to WebM, you can adjust: Video codec, Rate control, Quality (CRF), Video bitrate, Resolution, Width, Height, Scale fit, Frame rate, Encoder preset, Audio codec, Audio bitrate, Trim start, Trim duration, and Remove metadata.
Do I need an account to convert FLV to WebM?
No. You can convert FLV to WebM without an account; signing in raises the file-size and daily limits.
How long is my converted WebM file kept?
The WebM file you convert from FLV is kept for 2 hours, then deleted automatically.
When I convert FLV to WebM, is the video re-encoded?
The FLV is re-encoded into WebM at the default quality settings, so the result looks close to the original but is not bit-identical.
Will converting FLV to WebM change my original file?
No. The conversion reads your FLV and writes a new WebM file, leaving your original FLV file untouched.