500 KB MP4 sample file

An MP4 file of exactly 512,000 bytes. It is a valid MPEG-4 Part 14 video file, generated for this site and checked with an independent parser.

sample-mp4-500kb.mp4

500 KB512,000 bytes

Download 500 KB MP4

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Type: video/mp4
SHA-256: 109f0adf942095d2cec42a17682b5752bcb2baae4fb96594bd277efab8bfcbf3
Direct URL: https://sampletestfiles.com/downloads/mp4/sample-mp4-500kb.mp4

What is in this file

270 frames (9.0 s) of a synthetic test pattern with a frame counter, looping every six seconds, in one H.264 video track. 7,533 bytes of a trailing "free" box bring the file to the exact size.

Dimensions	640 × 360 px
Duration	9.0 s
Frame rate	30 fps
Video codec	H.264 (AVC), Main profile
Audio	No audio track
Fast start	Yes (moov before mdat)

First bytes of the file

The first 64 bytes of sample-mp4-500kb.mp4 as a hex dump: offset, bytes, then the same bytes as text. The MP4 signature is 66 74 79 70 at offset 4.

00000000  00 00 00 20 66 74 79 70 69 73 6f 6d 00 00 02 00  |... ftypisom....|
00000010  69 73 6f 6d 69 73 6f 32 61 76 63 31 6d 70 34 31  |isomiso2avc1mp41|
00000020  00 00 06 d3 6d 6f 6f 76 00 00 00 6c 6d 76 68 64  |....moov...lmvhd|
00000030  00 00 00 00 00 00 00 00 00 00 00 00 00 00 03 e8  |................|

Preview

Displays the file in your browser.

Where 500 KB matters

A 512,000-byte file: larger than most API body limits, smaller than most upload limits. These are the default limits a file of this size is useful for testing:

System	Limit	Note
Amazon DynamoDB items	400 KB per item	500 KB cannot be stored as a single item.
Express body parsers	100 KB by default	Rejected unless the limit is raised.
nginx request body	1 MB by default (client_max_body_size)	Accepted with room to spare.

All 500 KB sample files

Use this file for

Testing that APIs return 413 for oversized bodies
Testing range-request support on servers and CDNs
Verifying large-file and timeout handling

Testing notes for MP4

Seeking in a browser needs HTTP range requests. A server that ignores the Range header makes video appear to work until someone drags the progress bar.
A valid .mp4 may contain a codec the browser cannot play; container and codec are separate questions.

MP4 format reference

Technical details

File name	sample-mp4-500kb.mp4
Format	MP4 (MPEG-4 Part 14 video)
Extension	.mp4
MIME type	video/mp4
Size	512,000 bytes (500 KB)
Kind	Binary
Signature	66 74 79 70 at offset 4
SHA-256	109f0adf942095d2cec42a17682b5752bcb2baae4fb96594bd277efab8bfcbf3
Created	2026-10-10
Validation	Exact size, signature bytes and structure checked when the file was generated
Preview	Available on this page
Source	Generated for this site; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	Video

Validated for expected format and integrity. As with any download, scan the file with your own security tools before opening it. How files are made and checked

Download from the command line and verify

Fetch the file with curl, then compare its checksum with the SHA-256 value above.

curl -o sample-mp4-500kb.mp4 'https://sampletestfiles.com/downloads/mp4/sample-mp4-500kb.mp4'
sha256sum sample-mp4-500kb.mp4     # Linux
shasum -a 256 sample-mp4-500kb.mp4 # macOS

On Windows, run Get-FileHash sample-mp4-500kb.mp4 -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.

Related files

Questions about this file

Is this file exactly 500 KB?: Yes. It is 512,000 bytes, which is 500 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 500 KB MP4 file?: 270 frames (9.0 s) of a synthetic test pattern with a frame counter, looping every six seconds, in one H.264 video track. 7,533 bytes of a trailing "free" box bring the file to the exact size.
Do the MP4 samples have sound?: No. They contain a single H.264 video track and no audio track.

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