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ASF is a multimedia container format developed by Microsoft for streaming audio and video. It’s often used with Windows Media Audio (WMA) and Windows Media Video (WMV) codecs. ASF is optimized for playback over networks and supports metadata, subtitles, and DRM.
MP4 is a multimedia container format that can store video, audio, subtitles, and images. It’s the most common format for online video streaming and playback, supporting high compression and broad compatibility. MP4 is often used with H.264 and AAC codecs.
Convert your .asf files to .mp4 right in your browser — no downloads, no installs. Everything happens securely in the cloud.
We never store your files permanently. Only you can access them, and they’re automatically deleted from our servers within 2 hours.
Turn your ASF files into MP4 in just a couple of clicks. No registration, no limits — and it’s 100% free.