FLV to M2V Converter

Convert FLV to M2V: What This Tutorial Covers

This walks you through turning a Flash Video (.flv) file into an .m2v — a bare MPEG-2 Video elementary stream that DVD-authoring and broadcast tools ingest. Two things will surprise most people, so they are spelled out up front: the output is silent (an M2V cannot hold audio), and it is a downconvert into an older codec. If you just want a normal playable file from your FLV, this is the wrong page — jump to FLV to MP4 instead.

How to Convert FLV to M2V

1. Upload Your FLV File: Drag and drop your .flv onto the page, or click "+ Add Files" to browse. Batch upload is supported, so you can queue several clips and convert them with the same settings.
2. Pick a Quality Preset or Bitrate Mode: The output codec is MPEG-2. Leave Quality Preset on "Very High (Recommended)", or open File Compression and choose Constant Bitrate, Variable Bitrate, or Constant Quality to target a specific MPEG-2 bitrate — useful for staying under a DVD's video budget.
3. Match the DVD Resolution (Optional): Under Video resolution, choose "Keep original", a Preset Resolution, Resolution Percentage, or a custom Width x Height. Use Trim → Time Range to export just one segment of a long clip in the same pass.
4. Convert and Download: Click "Convert" and save your .m2v. The output is a video-only MPEG-2 stream. No sign-up, no watermark.

Walk-through: The Two Things That Trip People Up

The conversion itself is one click, but two facts about M2V change how you should set it up.

The audio is gone — by design. An .m2v is an MPEG-2 Video elementary stream (ISO/IEC 13818-2): picture only, no container, no audio track. FLV files almost always carry an MP3 or AAC soundtrack, and that soundtrack is discarded entirely in the conversion — nothing in the output can hold it. DVD-authoring pipelines expect this: they ingest the bare video as .m2v and supply the audio as its own separate file (commonly AC-3 or LPCM), joining the two only at the final muxing step. So plan for the audio as a second job:

• If you need the sound, extract it first with FLV to MP3 and keep it alongside the .m2v for muxing later.
• If you only ever wanted a watchable file, stop here and use FLV to MP4 — it keeps both the audio and an efficient H.264 codec.

It is a downconvert, so push the bitrate up. FLV video is usually Sorenson Spark, On2 VP6, or H.264; M2V is MPEG-2, a codec finalized in 1995 that is less efficient than any of them. Re-encoding into MPEG-2 needs a higher bitrate to hold the same visual quality, and because both sides are lossy you cannot regain detail the FLV already threw away — an old standard-definition FLV stays standard-definition. If the target is a DVD:

• Set 720x480 under Video resolution for an NTSC disc, or 720x576 for PAL.
• Keep the MPEG-2 video bitrate at or below DVD-Video's 9.8 Mbit/s ceiling.

Common Errors and How to Fix Them

• "My M2V file has no sound." Expected — M2V is video-only by definition. The FLV's audio was dropped. Extract it separately via FLV to MP3, or convert to FLV to MP4 if you wanted a file with sound.
• "The M2V won't open in my normal player." Most players refuse a bare elementary stream. VLC and MPEG Streamclip open .m2v directly; Windows Media Player, QuickTime, and browsers generally will not.
• "The M2V is bigger than the FLV." MPEG-2 is less efficient than the FLV's codec, so matching quality can grow the file. Lower the bitrate under File Compression if size matters more than fidelity.
• "My DVD software rejects the stream." It usually wants a DVD-legal frame size and frame rate. Set 720x480 (NTSC) or 720x576 (PAL) and stay at or under 9.8 Mbit/s.
• "The picture looks soft after converting." Choosing a larger resolution preset upscales the frame but invents no new detail; an SD FLV upscaled to 720p only looks blurry. Keep "Keep original" unless the disc spec forces a size.

When This Doesn't Work

M2V is a niche, intermediate target — useful only when a DVD-authoring or MPEG-2 broadcast tool specifically asks for a bare .m2v video stream. If you actually want a file you can play, share, or upload, M2V is the wrong destination: a silent, container-less stream that most software won't open. Use FLV to MP4 for a smaller, widely playable file that keeps the audio. And if your FLV is corrupted or only partly downloaded (a common problem with files pulled from old streaming caches), no converter can rebuild the missing frames — you would need a clean copy of the original first.

Frequently Asked Questions

Why does my M2V have no sound after converting from FLV?

Because an .m2v cannot hold sound. M2V is an MPEG-2 Video elementary stream — picture only, with no audio track by definition. FLV files almost always carry MP3 or AAC audio, and that soundtrack is dropped entirely during the conversion; nothing in the output can carry it. In DVD and broadcast authoring this is intentional: the audio is encoded as a separate file (usually AC-3 or LPCM) and only joined to the video at the final muxing step. If you need the sound, extract it with our FLV to MP3 tool or keep a copy of the original FLV.

Will converting FLV to M2V improve the quality or make it HD?

No. This is a lossy-to-lossy re-encode from the FLV's codec (Sorenson Spark, VP6, or H.264) down to MPEG-2, an older and less efficient codec finalized in 1995. It cannot regain detail the original FLV already discarded, and a standard-definition source stays standard-definition. Because MPEG-2 needs a higher bitrate than H.264 for the same visual quality, the M2V can even end up larger than the FLV it came from. Selecting a bigger resolution preset upscales the frame but invents no new detail.

What resolution and bitrate should I use for a DVD?

DVD-Video defines two picture sizes: 720x480 at 29.97 fps for NTSC discs and 720x576 at 25 fps for PAL discs. Set one of these under Video resolution so your authoring software accepts the stream without re-scaling. DVD-Video also caps MPEG-2 video at 9.8 Mbit/s, so keep the bitrate at or below that under File Compression if the file is bound for a disc.

Why won't my M2V file play on its own in a normal player?

Most consumer players and browsers expect a wrapped container (MP4, MKV, even WMV) and refuse to open a bare elementary stream that has no audio and no muxing. VLC and MPEG Streamclip play .m2v directly because they handle raw streams, but QuickTime, Windows Media Player, and web browsers generally will not. M2V is meant to be an intermediate that gets multiplexed into a DVD or program stream, not a file you play directly. In our testing, an .m2v from a 480p source opened cleanly as a silent video in VLC while several general-purpose players refused it.

Should I convert FLV to M2V at all, or to MP4 instead?

For almost any use that is not DVD authoring, choose MP4. An M2V is a silent, container-less stream that most software won't open, while MP4 keeps the audio and the efficient H.264 codec and plays nearly everywhere. Convert to M2V only when a DVD-authoring or MPEG-2 broadcast tool specifically asks for a bare .m2v video stream. For everything else, FLV to MP4 is the better trip — it is smaller, keeps the sound, and stays widely playable. Going the other direction? See M2V to FLV.

How are my files handled, and how long are they kept?

Your file is uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after the conversion — no sign-up, no watermark, never shared or made public.