Free online IFV to AAC converter

What the IFV format is

IFV is an extension used by some DVR and NVR surveillance systems for recorded camera footage. It is not one universally standardized container, so the internal video and audio codecs vary by manufacturer; many IFV files require the vendor’s player or export utility before general-purpose software can read them. You typically encounter IFV files when copying recordings from a security recorder, CCTV application, or surveillance backup.

What the AAC format is

AAC is a lossy audio codec supported by phones, media players, browsers, and editing applications. It usually provides better quality than MP3 at the same bitrate and is commonly stored as a raw .aac stream or inside an .m4a container. AAC is suitable when you need the audio from a surveillance recording without retaining the video.

How to actually convert IFV to AAC

Using the online converter

On 101convert.com, upload the IFV file, select AAC as the output format, start the conversion, and download the resulting file. This option requires no software installation, but a proprietary IFV file may fail if the service cannot decode that recorder’s format.

Using FFmpeg on a readable IFV file

FFmpeg can extract and encode the first audio stream when it recognizes the IFV container:

ffmpeg -i input.ifv -map 0:a:0 -vn -c:a aac -b:a 192k output.aac

• -map 0:a:0 selects the first audio track.
• -vn removes video from the output.
• -c:a aac encodes the audio as AAC.
• -b:a 192k sets the AAC bitrate; use 128k for speech or 256k for higher-quality music and ambient audio.

Check whether FFmpeg can inspect the file before converting it:

ffprobe -hide_banner input.ifv

If the output reports that the existing audio codec is already AAC, avoid another lossy encode:

ffmpeg -i input.ifv -map 0:a:0 -vn -c:a copy output.aac

When FFmpeg cannot open the IFV file

Open the recording in the DVR manufacturer’s player and use its Export, Save as, or Convert function to create an AVI or MP4 file. Then extract the audio from that exported file:

ffmpeg -i exported.mp4 -map 0:a:0 -vn -c:a aac -b:a 192k output.aac

Some surveillance players export video without audio or require a proprietary codec package; in that case, the original IFV may not contain an extractable soundtrack.

Quality, compatibility, and limitations

Re-encoding an existing compressed soundtrack reduces quality, so use -c:a copy only when the source audio is already AAC and the target application accepts the resulting stream. Raw .aac files are less widely supported than AAC inside an .m4a container; if an application rejects the raw file, create an M4A version instead:

ffmpeg -i input.ifv -map 0:a:0 -vn -c:a aac -b:a 192k output.m4a

IFV recordings may contain multiple audio tracks, muted camera audio, or no audio stream at all. Use ffprobe to verify the stream and duration before conversion.