Free online MPEG to OGV converter

Source format: MPEG

MPEG usually refers to video files encoded with MPEG-1 or MPEG-2 compression, commonly stored in .mpg, .mpeg, or sometimes .mpe files. It is a long-established format used for DVD video, older digital cameras, broadcast archives, and general-purpose video distribution. MPEG files are widely supported by media players and editing tools, but they are often larger and less efficient than newer codecs.

Target format: OGV

OGV is a video file container associated with the Ogg ecosystem, typically carrying video encoded with Theora or sometimes other open codecs. It is valued for being open, royalty-free, and suitable for web publishing, archival use, and playback in software that supports open multimedia standards. OGV is less common than MP4, but it remains useful where open formats are preferred.

How to perform the conversion

The most reliable way to convert MPEG to OGV is with FFmpeg, a free command-line tool that supports both formats. If you prefer a no-install option, you can convert the file on 101convert.com for free in your browser.

Using FFmpeg:

1. Install FFmpeg on your computer.
2. Open a terminal or command prompt in the folder containing your MPEG file.
3. Run a command such as ffmpeg -i input.mpg -c:v libtheora -q:v 7 -c:a libvorbis output.ogv.
4. Wait for the conversion to finish, then open output.ogv in a compatible player.

What the command does: -c:v libtheora encodes video to Theora, -c:a libvorbis encodes audio to Vorbis, and -q:v 7 sets a moderate quality level. You can adjust the quality value higher for better quality and larger files, or lower for smaller files.

Using a desktop converter with a graphical interface:

1. Open the MPEG file in a converter or editor that supports export to OGV.
2. Choose File → Export or File → Save As, depending on the program.
3. Select OGV or an Ogg/Theora output profile.
4. Start the export and save the resulting file.

Notes on quality, compatibility, and limitations

OGV is not as universally supported as MP4, so check playback compatibility if you plan to share the file broadly. Because MPEG sources are often already compressed, converting them to OGV may cause generation loss; the output can never be better than the original source. For best results, use the highest-quality MPEG source available and avoid repeated re-encoding.

If your MPEG file contains interlaced video, unusual audio codecs, or multiple streams, some converters may need extra settings to preserve playback quality. Also, OGV files are typically larger than modern H.264 or H.265 outputs at similar visual quality, but they remain a strong choice when open-format compatibility matters.