Convert MPEG-4 Video (Apple) (.m4v) to Ogg Video (.ogv) online for free. Fast, secure video conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .m4v 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.
M4V is Apple's MPEG-4 video container using H.264 and AAC codecs, while OGV (Ogg Video) is the video variant of the Ogg container format using the Theora video codec and Vorbis audio. OGV was designed as a completely royalty-free video format for the open web, championed by the Xiph.Org Foundation and Mozilla. Converting M4V to OGV produces video files that can be played without any patent-licensed codecs, making them ideal for open-source and web publishing contexts.
OGV exists to provide a completely patent-free video format for situations where using H.264 (which requires a patent license for certain commercial uses) is not acceptable. While WebM has largely superseded OGV for this purpose, OGV remains relevant for older web projects, Linux distributions that preinstall only free codecs, and educational or government institutions with strict open-source mandates.
FFmpeg decodes the M4V's H.264 video and AAC audio, then re-encodes using libtheora for video and libvorbis for audio. Theora encoding supports quality levels from 0 to 10, where 5-7 produces reasonable quality at DVD-like bitrates (2-4 Mbps). The output is muxed into an Ogg container. Theora is significantly less efficient than H.264, so OGV files are typically 30-50% larger at equivalent visual quality.
Theora's compression efficiency is roughly comparable to MPEG-4 Part 2 (DivX era) and noticeably inferior to H.264. At the same bitrate, H.264 produces sharper output with fewer compression artifacts. To achieve comparable visual quality to the M4V source, the OGV file will need a higher bitrate, resulting in a larger file.
| Device | M4V | OGV |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Native | Partial |
| iPhone/iPad | Native | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: 1920x1080
Bitrate: 8-12 Mbps
H.264 recommended for fast processing
Resolution: 1080x1080
Bitrate: 3.5 Mbps
Square or 9:16 for Reels
Resolution: 1080x1920
Bitrate: 4 Mbps
9:16 vertical, under 60s ideal
Resolution: 1280x720
Bitrate: 5 Mbps
Under 140s, 512MB max
Resolution: 960x540
Bitrate: 2 Mbps
16MB limit for standard, 64MB for document
Resolution: 1280x720
Bitrate: 4 Mbps
8MB free, 50MB Nitro
M4V to OGV conversion trades compression efficiency for patent freedom. While OGV is not the most efficient format, it remains the standard for contexts requiring completely royalty-free video delivery.
ถ่ายโอนอย่างปลอดภัย
อัปโหลดเข้ารหัส HTTPS
ความเป็นส่วนตัวมาก่อน
ไฟล์ถูกลบอัตโนมัติหลังการประมวลผล
ไม่ต้องลงทะเบียน
เริ่มแปลงได้ทันที
ใช้ได้ทุกที่
| No |
ทุกเบราว์เซอร์ ทุกอุปกรณ์
| ฟีเจอร์ | M4V | OGV |
|---|---|---|
| ชื่อเต็ม | iTunes Video | Ogg Video |
| นามสกุล | .m4v | .ogv |
| เหมาะที่สุดสำหรับ | Apple ecosystem | Open source |