Sample AAC 5MB File
AAC — efficient lossy audio
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Download 5MB AAC5 MBTestFile-aac-5mb.aac
File details
| Format | AAC |
| Extension | .aac |
| MIME type | audio/aac |
| Size | 5 MB |
| Exact bytes | 5,242,880 |
| Filename | TestFile-aac-5mb.aac |
| Format version | AAC-LC / ADTS — ISO 14496-3 |
| Contents | 440 Hz sine tone, ~5.5 min; AAC-LC 128 kbps; stereo; 44.1 kHz; ADTS container |
| Encoding | AAC-LC profile; 128 kbps CBR; 44,100 Hz; stereo; ADTS framing |
What is a 5MB AAC file useful for?
A 5 MB AAC file at 128 kbps provides approximately 5.5 minutes of audio — a full podcast episode intro segment or a complete music track preview. Use it to test that your audio pipeline correctly handles raw ADTS AAC (without an MP4 container), to benchmark AAC decode throughput for waveform generation, and to verify that your streaming delivery stack correctly handles AAC range requests for seek-by-click in web audio players.
What's inside this file?
Generated by ffmpeg. A 440 Hz sine tone approximately 5.5 minutes long at 44.1 kHz, stereo, AAC-LC 128 kbps ADTS. Contains approximately 14,200 ADTS frames. At 128 kbps CBR, each ADTS frame is a fixed size (417–418 bytes at 44.1 kHz), enabling direct byte-offset seeking similar to CBR MP3.
Download via curl
curl -L "http://localhost:8000/files/aac/TestFile-aac-5mb.aac" \ -o TestFile-aac-5mb.aac
Need different parameters?
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