Audio format

M4A Sample Files

M4A (.m4a) encapsulates AAC or ALAC audio within an MP4 container, adding support for chapter markers and metadata atoms. Common on Apple platforms, it’s ideal for music and podcasts. Use sample .m4a files to test container parsing, chapter navigation, and artwork extraction.

4 files All to 500KB SHA256 verified Manifest included
Quick facts
CategoryAudio
Total Files4
Extension.m4a
MIMEaudio/mp4
ManifestJSON
Request Related Coverage
Files first

Start with one representative file.

Starter file

m4a_15s_sample_file_141KB.m4a · 140.2 KB

Download
Filename Size MIME Download
.m4a Starter SHA256 9526e6248b94...
140.2 KB audio/mp4 Download
.m4a Realistic SHA256 aa8a7f81ada8...
284.8 KB audio/mp4 Download
.m4a SHA256 94a3173ca603...
43.9 KB audio/mp4 Download
.m4a SHA256 54a2f88a0764...
573.7 KB audio/mp4 Download
Use cases

Pick the next task, not just the next file.

Upload Testing

M4A for Upload Testing

Open Format M4A

Parser Regression

M4A for Parser Regression

Open Format M4A

QA Automation

M4A for QA Automation

Open Format M4A
Compare and decide

Keep the next decision one step away.

FAQ and reference

Keep the operational details quiet.

Checksum Verification

Use checksums to confirm file integrity after download.

shasum -a 256 your_file_name_here
# Compare output with SHA256 values listed above.
Where is the machine-readable manifest?

Use the manifest when you need stable names, SHA256 values, and URLs for automation.

Validation Methodology
  • Verify duration, sample rate, and channel count in your decoder.
  • Test metadata extraction and malformed-tag handling.
  • Validate seek/stream behavior over slow networks.