Free online WTV to M2V converter

What the WTV format is

WTV, or Windows Recorded TV Show, is a Microsoft container used by Windows Media Center to save scheduled and live television recordings. Windows 7 and Windows Vista Media Center commonly created WTV files, which may contain MPEG-2 or H.264 video, plus audio, subtitles, electronic-program-guide data, and broadcast metadata.

WTV recordings can include copy-protection restrictions imposed by the broadcaster. A protected recording may open only on the authorized computer or Media Center installation and may not be convertible with FFmpeg or other software.

What the M2V format is

M2V is an elementary MPEG-2 video stream. It contains video only: audio, subtitles, menus, and metadata are stored separately or omitted. DVD-authoring applications and some older editing, broadcast, and multiplexing tools accept M2V directly.

The format is useful when a workflow specifically requires MPEG-2 video without a container. For a DVD, an M2V file is normally paired with an audio file such as AC-3 or WAV before authoring. M2V is not a smaller replacement by definition; converting H.264 WTV video to MPEG-2 commonly increases the file size at comparable visual quality.

How to actually convert WTV to M2V

Using FFmpeg

FFmpeg is the most controllable desktop option. Install a current FFmpeg build, open a terminal in the folder containing the recording, and inspect its streams first:

ffprobe "recording.wtv"

To convert the first video stream and discard audio, use:

ffmpeg -i "recording.wtv" -map 0:v:0 -an -c:v mpeg2video -q:v 3 -f mpeg2video "video.m2v"

The -map 0:v:0 option selects the first video stream, -an removes audio, and -f mpeg2video writes an elementary M2V stream. With FFmpeg's quality scale, lower -q:v values produce higher quality and larger output; values from 2 to 5 are a practical starting range.

If ffprobe shows that the source video is already MPEG-2 and the target application accepts its parameters, avoid re-encoding:

ffmpeg -i "recording.wtv" -map 0:v:0 -an -c:v copy -f mpeg2video "video.m2v"

Stream copying is faster and preserves the original video, but it fails when the source codec is not compatible with the M2V muxer. In that case, use the re-encoding command.

Using the built-in online converter

You can convert the file for free on 101convert.com without installing software. Select the WTV file, choose M2V as the output format, start the conversion, and download the resulting video stream when processing finishes. The service may reject copy-protected recordings or impose file-size and upload limits.

Quality, compatibility, and limitations

M2V cannot retain WTV audio, subtitles, channel metadata, or recording-guide information. If the destination needs audio, extract or convert it separately and verify that the authoring software accepts the selected audio codec.

Re-encoding H.264 WTV video to MPEG-2 causes generation loss. Preserve the original frame size and frame rate unless the target specification requires a change; unnecessary resizing or frame-rate conversion adds quality loss. Interlaced television footage should generally remain interlaced for interlaced DVD or broadcast workflows.

Some WTV files contain multiple video or audio streams. Use ffprobe and adjust the stream mappings when the required stream is not the first one, for example -map 0:v:1. Test the resulting M2V in the intended authoring or editing application because elementary streams carry fewer format cues than a container file.