Free online FLV to WAV converter

Extract audio from legacy FLV video files as compatible uncompressed PCM WAV.

Convert FLV to WAV online - free

.flv .wav

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How to convert flv to wav file

August 14, 2026
Audio
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Audio editors, transcription software, and legacy playback devices may accept WAV but not FLV. Converting extracts the FLV audio stream and discards its video.

What FLV files contain

FLV (Flash Video) is a multimedia container associated with Adobe Flash-era web streaming. Older publishing systems, screen recorders, download tools, and Flash Media Server workflows created FLV files; modern browsers no longer play Flash content directly.

An FLV file can contain video encoded with H.263, VP6, or H.264 and audio encoded with MP3, AAC, Nellymoser, Speex, ADPCM, or PCM. The conversion process decodes an audio stream from that container; it does not convert or retain the video.

Why use WAV

WAV is a RIFF-based audio container most commonly used for uncompressed PCM audio. PCM WAV is accepted by Windows applications, DAWs, audio editors, transcription tools, and many media-production workflows.

Use WAV when audio must be edited, placed accurately on a timeline, or imported into software that rejects compressed audio. A stereo 44.1 kHz, 16-bit PCM WAV requires about 10 MB per minute, so it is usually unsuitable when small file size is the priority.

WAV does not improve a lossy FLV audio source. If the source uses MP3, AAC, Speex, or another lossy codec, conversion stores its decoded audio in PCM without restoring discarded detail.

Convert the file

Upload the FLV to 101convert.com, choose WAV as the output format, start conversion, and download the result. Play the WAV or open it in the target program before deleting the original FLV.

For local conversion, FFmpeg supports most FLV audio codecs. In a terminal opened in the folder containing input.flv, run:

ffmpeg -i input.flv -map 0:a:0 -vn -c:a pcm_s16le output.wav

-map 0:a:0 selects the first audio stream, -vn excludes video, and pcm_s16le creates standard 16-bit little-endian PCM WAV. If the file contains multiple audio tracks, replace the final 0 in 0:a:0 with the required track number.

Only set a sample rate or channel count when the receiving program requires it. For example, this produces 44.1 kHz stereo PCM:

ffmpeg -i input.flv -map 0:a:0 -vn -c:a pcm_s16le -ar 44100 -ac 2 output.wav

Resampling does not add quality; retain the source sample rate when possible. Audacity can also import many FLV files when its installed FFmpeg support recognizes the codecs: use File → Import → Audio, then File → Export Audio and select WAV (Microsoft) signed 16-bit PCM.

Compatibility limits

Some FLV files contain no audio stream, so no usable WAV can be created. Damaged files and uncommon legacy codecs may fail to decode; another decoder or a repaired copy of the original file may be required.

Classic RIFF/WAV files are limited to just under 4 GiB. Long recordings at high sample rates, many channels, or 24-bit depth may exceed that limit; split the audio into parts or use RF64 only if the receiving software supports it.

FLV vs WAV: format comparison

How the FLV and WAV formats compare on the properties that matter most for this conversion.

Comparison of the FLV and WAV file formats
Property	.FLV Flash Video	.WAV Waveform Audio File Format
Open standard	Partly open	Partly open
Compression	Both	Both
Typical file size	Small	Large
Opens in a web browser	Partial	Yes, natively
Further editing	Limited	Easy
Metadata support	Basic	Basic
Plain-text readable	No	No
Best used for	Streaming	Music
Introduced	2002	1991
Developer	Adobe Systems / Macromedia	Microsoft and IBM
MIME type	video/x-flv	audio/wav

Open FLV file Open WAV file

Frequently asked questions

Is the FLV to WAV converter free?

Yes, converting FLV to WAV on 101convert.com is completely free. No registration, email address or installation is required. If you need a higher file size limit or want to convert more files at once, see our plans.

How large can my FLV file be?

You can upload FLV files up to 500 MB and convert up to 1 files at once in a single batch.

What happens to my uploaded files?

Files are processed automatically and deleted from our servers within a few minutes after conversion. We never view or share your files.

Do I need to install any software to convert FLV to WAV?

No. The FLV to WAV conversion runs entirely online in your browser and works on Windows, Mac, Linux, Android and iPhone.

Did the conversion fail?

In most cases, the cause is an incorrect file format. Please upload a valid FLV file for this FLV to WAV conversion. Occasionally, the issue may be on our side. We analyze recurring conversion failures and disable or fix the converter if we detect a defect.

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