FLV to AIFF Converter

AUTO-DELETE/Files are processed on our server and deleted as soon as conversion finishes.

or drop your images here

How to Convert FLV to AIFF Online

This tool takes a FLV file, processes it with FFmpeg on DownloadVideo.vn servers and returns a AIFF file.

The picture track of the FLV is dropped; only the audio is kept and packaged as AIFF.

FLV is lossy while AIFF stores data exactly. The AIFF file will be larger but not better: detail discarded by FLV cannot be restored.

Property	FLV	AIFF
Full name	Flash Video	Audio Interchange File Format
Introduced	Macromedia/Adobe, 2003	Apple, 1988
Compression	lossy	uncompressed
Common codecs	Sorenson Spark, VP6, H.264, MP3, AAC	—
Strengths	common in old video archives and early streaming downloads	the uncompressed studio format on Mac (Logic, GarageBand)
Limitations	Adobe Flash Player was retired in 2020 — browsers no longer play FLV; phones and modern TVs do not play it	as large as WAV; less common on Windows and Android

On September 25, 2026 we ran the tool on our production server with a sample file: a 10-second 1280×720 video (FLV1 + MP3), 9.6 MB.

Result: 9.6 MB → 1.7 MB, processed in 3.7 s. Output: PCM 16 bit audio at 44.1 kHz stereo, 1411 kbps.

Real sizes depend on your content (how complex the picture and sound are, and the length); the figures only show the order of change.

The tool always re-encodes the picture and sound, even when the source codec would already fit the target format.
Up to 500 MB per file; a conversion that runs longer than 10 minutes is cancelled.
The file is sent to our server for conversion and deleted as soon as processing ends, including when it fails.

No. AIFF is an audio format, so only the sound is kept.

No. AIFF only stores exactly what is left in the FLV; what was lost when the FLV was compressed does not come back. The file just gets larger.

With our sample file: 9.6 MB → 1.7 MB. Your file may differ depending on its content.