Video Converter World & Custom Web Search – Get this Extension for 🦊 Firefox (en-US)
Firefox add-on that allows MP3 conversion for free, video conversion, audio extraction from video, video and audio combining, multiple videos combined into one, maximum volume adjustment, video resolution change, video rotation, sound
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Video Converter – Get this Extension for 🦊 Firefox (en-US)
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Video DownloadHelper – Get this Extension for 🦊 Firefox (en-US)
MConverter - File Converter: AVIF, JXL, WebP, 7ZIP – Get this Extension for 🦊 Firefox (en-US)
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Media Converter :: add0n.com
Firefox add-on that allows MP3 conversion for free, video conversion, audio extraction from video, video and audio combining, multiple videos combined into one, maximum volume adjustment, video resolution change, video rotation, sound
FVD shows "convert" instead of "download" : r/firefox