FLV to MP4

FLV is Flash-era video, and no current browser can play it. Converting is the only way to watch an archived FLV at all.

Runs in your browser // nothing is uploaded

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What survives the conversion

Derived from what each format is able to store, not from what the conversion promises.

Kept

Audio track
Metadata, which FLV could not store
Chapters, which FLV could not store

Lost

Nothing FLV carries is dropped by MP4.

Settings used

H.264 at CRF 23, preset veryfast, audio to AAC.

When not to convert

Nothing to weigh. FLV has no working playback path left.

About these formats

Video

What is a MP4 file?

MP4 is a container rather than a codec: it usually holds H.264 video with AAC audio, which is the single most widely playable combination on the internet. It supports subtitles, chapters and multiple audio tracks, and streams well because metadata can sit at the front of the file.

Read the format guide

Common questions

Does converting FLV to MP4 lose anything?

Nothing this conversion can preserve is dropped. FLV is Flash-era video, and no current browser can play it. Converting is the only way to watch an archived FLV at all.

Are my files uploaded when I convert FLV to MP4?

No. The conversion runs in your browser tab, so the file is never transmitted and the page works offline once loaded.

What settings does Filoven use for FLV to MP4?

H.264 at CRF 23, preset veryfast, audio to AAC.

When should I not convert FLV to MP4?

Nothing to weigh. FLV has no working playback path left.