Convert MPEG-4 Audio (.m4a) to Ogg Video (.ogv) online for free. Fast, secure audio conversion with no watermarks or registration.
Upload your .m4a file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .ogv file when it's ready.
OGV is the video-oriented extension for OGG containers, typically containing Theora video and Vorbis audio. Converting M4A to OGV creates an OGG file with Vorbis-encoded audio using the .ogv extension. This is a niche conversion primarily needed for legacy web platforms, Wikipedia/Wikimedia Commons uploads, or systems built during the HTML5 format war that expected OGV media files.
Wikimedia Commons historically preferred OGV for all media uploads due to its open-source, patent-free status. Some academic and government web platforms mandated OGV as the only accepted media format. Legacy HTML5 implementations that used OGV as a video fallback format may also accept audio-only OGV files.
FFmpeg decodes the M4A's AAC or ALAC audio and encodes to Vorbis inside an OGG container with an .ogv extension. The OGG container is identical whether the extension is .ogg or .ogv — the extension merely signals expected content type. For a proper OGV with video, a static image can be encoded as a Theora video stream alongside the Vorbis audio.
Vorbis audio quality depends on the quality setting. At q5 (≈160 kbps), quality is very good. At q7+ (≈224+ kbps), it approaches the quality ceiling. The OGV container has zero impact on audio quality.
| Device | M4A | OGV |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
M4A to OGV is a specialized conversion for open-format-mandated platforms. For most use cases, .ogg is the more appropriate extension for audio-only content.
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| No |
| Tính năng | M4A | OGV |
|---|---|---|
| Tên đầy đủ | MPEG-4 Audio | Ogg Video |
| Phần mở rộng | .m4a | .ogv |
| Phù hợp nhất cho | Better than MP3 | Open source |