Convert MPEG Audio Layer 2 (.mp2) to MPEG-4 Part 14 (.mp4) online for free. Fast, secure audio conversion with no watermarks or registration.
Upload your .mp2 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 .mp4 file when it's ready.
Converting MP2 to MP4 transforms broadcast MPEG Audio Layer 2 into the most universally supported media format. MP4 plays on every device, browser, and platform. This conversion is the standard path for making broadcast audio — DAB radio, DVB television, DVD-Video — accessible to consumer audiences.
MP4 with AAC encoding provides better compression efficiency than MP2, meaning converted files are typically smaller while maintaining equivalent perceived quality. With -movflags +faststart, the output is optimized for progressive web delivery.
MP4 is the universal format. Converting broadcast MP2 to MP4 ensures the audio plays on every smartphone, computer, smart TV, and web browser. This is the most practical format for consumer distribution of broadcast content.
For web publishers, MP4 with AAC is the standard format for HTML5 audio/video elements. Converting broadcast MP2 to MP4 enables direct web embedding without browser compatibility concerns.
FFmpeg decodes MP2 to PCM and encodes to AAC-LC within an MPEG-4 Part 14 container. The -movflags +faststart flag moves the moov atom for progressive web delivery. Standard: 128 kbps AAC for 256 kbps MP2, 192 kbps AAC for 384 kbps MP2. Broadcast 48 kHz sample rate is preserved.
AAC at 128 kbps matches broadcast MP2 at 256 kbps — the file is smaller with equivalent quality. At 192 kbps, the output is transparent relative to any broadcast MP2 source. On consumer devices, the conversion is imperceptible.
| Device | MP2 | MP4 |
|---|---|---|
| Windows PC | Partial | Native |
| macOS | Partial | Native |
| iPhone/iPad | Partial | Native |
| Android | Partial | Native |
| Linux | Partial | Native |
| 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
MP2 to MP4 is the standard broadcast-to-consumer conversion for universal playback. Use -movflags +faststart for web delivery.
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| Native |
| Tính năng | MP2 | MP4 |
|---|---|---|
| Tên đầy đủ | MPEG Audio Layer 2 | MPEG-4 Part 14 |
| Phần mở rộng | .mp2 | .mp4 |
| Phù hợp nhất cho | Broadcast standard | Universal compatibility |