Vid
1s Color AVI
1s Color AVI is a Audio Video Interleave sample generated for file format testing. It can be used to test downloads, parsers, previews, and file type detection.
color-1s.aviType Sample
7.4 KB DownloadVideo
AVI Audio Video Interleave
Audio Video Interleave is a video format commonly identified by .avi. Use the listed signatures, MIME types, and structure notes to validate files beyond the extension.
Extensions .avi
MIME video/x-msvideo
Magic numbers
Analyze your fileoffset 0 Audio Video Interleave leading signature
52 49 46 46 RIFFStructure
- RIFF header
- AVI form type
- hdrl list
- movi list
- idx1 index
Caveats
- Do not trust the extension alone. Check the MIME type, the first bytes such as 52 49 46 46, and format-specific structure when possible.
- Container formats and damaged files can share the same opening bytes, so deeper validation may be required for production upload, preview, or conversion flows.
Detection example
SIGNATURE = bytes.fromhex("52494646")
OFFSET = 0
def is_avi(path: str) -> bool:
with open(path, "rb") as f:
f.seek(OFFSET)
head = f.read(len(SIGNATURE))
return head == SIGNATUREconst SIGNATURE = [0x52, 0x49, 0x46, 0x46];
const OFFSET = 0;
// bytes: a Uint8Array / Buffer holding the start of the file
export function isAvi(bytes) {
return SIGNATURE.every((byte, i) => bytes[OFFSET + i] === byte);
}package fileid
import "bytes"
var isaviSignature = []byte{0x52, 0x49, 0x46, 0x46}
const isaviOffset = 0
func IsAvi(b []byte) bool {
end := isaviOffset + len(isaviSignature)
if len(b) < end {
return false
}
return bytes.Equal(b[isaviOffset:end], isaviSignature)
}const SIGNATURE: &[u8] = &[0x52, 0x49, 0x46, 0x46];
const OFFSET: usize = 0;
fn is_avi(bytes: &[u8]) -> bool {
bytes.get(OFFSET..OFFSET + SIGNATURE.len()) == Some(SIGNATURE)
}<?php
$signature = "\x52\x49\x46\x46";
$offset = 0;
function is_avi(string $bytes): bool {
global $signature, $offset;
return substr($bytes, $offset, strlen($signature)) === $signature;
}Practical usage
Use cases
Audio Video Interleave is used for video previews, encoding checks, responsive UI testing, and upload flows. Container format and codecs are separate concerns, so leading bytes alone do not prove playability.
Common detection mistakes
- The .avi extension alone does not prove the file contents. Upload and conversion flows should combine extension, MIME type, leading bytes, and format-specific structure checks.
- Audio Video Interleave can start with signatures such as 52 49 46 46, but related containers and damaged files may require additional validation.
Security notes
Media files can still stress decoders through corrupt metadata, extreme dimensions, long durations, or unusual chunks. Read size, dimensions, and duration before processing.
Using samples
11 samples help test duration handling, playback startup, metadata reads, and download behavior.
Sample files
11 / 11 filesVid
Cloud Flight AVI 0.5s
Cloud Flight AVI 0.5s is a Audio Video Interleave sample based on Wikimedia Commons, 160 x 284, 0.5s. It can be used to test downloads, parsers, previews, and file type detection.
01-flight-over-clouds.aviResolution 160 x 284 45 Kpx
16 KB SHA-256
9bacd84254db1f020e974d34a6acf40d57bc86dc7a69ba4e8bd4122d10efa0e7Vid
Cloud Flight AVI 1s
Cloud Flight AVI 1s is a Audio Video Interleave sample based on Wikimedia Commons, 240 x 426, 1s. It can be used to test downloads, parsers, previews, and file type detection.
02-flight-over-clouds.aviResolution 240 x 426 102 Kpx
37 KB SHA-256
29980286d0c22d8a0418c482847f1ba80100a063f9943f0ac5e5ba1cf09a1aceVid
Cloud Flight AVI 1.5s
Cloud Flight AVI 1.5s is a Audio Video Interleave sample based on Wikimedia Commons, 320 x 568, 1.5s. It can be used to test downloads, parsers, previews, and file type detection.
03-flight-over-clouds.aviResolution 320 x 568 182 Kpx
70 KB SHA-256
d448039c1c8b5ed42d67c4a9be4fee29842f3b463a247c3fb7f7d0cbd223f534Vid
Cloud Flight AVI 2s
Cloud Flight AVI 2s is a Audio Video Interleave sample based on Wikimedia Commons, 480 x 854, 2s. It can be used to test downloads, parsers, previews, and file type detection.
04-flight-over-clouds.aviResolution 480 x 854 410 Kpx
161 KB SHA-256
0f4b6d85a95e8bd68c5b9893bc90326a59d8fcaba904a3abae0fbf63c3a7d5a3Vid
Cloud Flight AVI 3s
Cloud Flight AVI 3s is a Audio Video Interleave sample based on Wikimedia Commons, 640 x 1138, 3s. It can be used to test downloads, parsers, previews, and file type detection.
05-flight-over-clouds.aviResolution 640 x 1138 728 Kpx
382 KB SHA-256
ef8d0f98bf110b00aec9fcb9815f18807926e2cbaceba6a45497aa498eaf0018Vid
Cloud Flight AVI 4s
Cloud Flight AVI 4s is a Audio Video Interleave sample based on Wikimedia Commons, 720 x 1280, 4s. It can be used to test downloads, parsers, previews, and file type detection.
06-flight-over-clouds.aviResolution 720 x 1280 922 Kpx
621 KB SHA-256
58d53a18c96c5673196ee9dd416cd8fe67030180a57ead0094e9437051e5da37Vid
Cloud Flight AVI 5s
Cloud Flight AVI 5s is a Audio Video Interleave sample based on Wikimedia Commons, 854 x 1518, 5s. It can be used to test downloads, parsers, previews, and file type detection.
07-flight-over-clouds.aviResolution 854 x 1518 1.3 MP
1.02 MB SHA-256
1d10e9598ce4b4c74b95b70262b202edd93e63c6d82244771bd2896e625ad076Vid
Cloud Flight AVI 6s
Cloud Flight AVI 6s is a Audio Video Interleave sample based on Wikimedia Commons, 960 x 1706, 6s. It can be used to test downloads, parsers, previews, and file type detection.
08-flight-over-clouds.aviResolution 960 x 1706 1.6 MP
1.46 MB SHA-256
eae4a9a28d58e32bf327d776e653ed931b6550b855b0b007484c9b08337dd130Vid
Cloud Flight AVI 8s
Cloud Flight AVI 8s is a Audio Video Interleave sample based on Wikimedia Commons, 1080 x 1920, 8s. It can be used to test downloads, parsers, previews, and file type detection.
09-flight-over-clouds.aviResolution 1080 x 1920 2.1 MP
2.21 MB SHA-256
8e7a0150bf6176e49160fd2931151f21cde6a441ffeb99e0194e43ecd6a2be4aVid
NASA Clouds AVI
NASA Clouds AVI is a Audio Video Interleave sample based on NASA Image and Video Library, 480 x 270, 2s. It can be used to test downloads, parsers, previews, and file type detection.
nasa-clouds-orbit.aviResolution 480 x 270 130 Kpx
227 KB SHA-256
126b9edfd4162627d8f70b6ea509af92e1b6bf0ffc99347d3d97820ff1f1320aFrequently asked questions
What is the magic number (file signature) of Audio Video Interleave?
Audio Video Interleave files begin with the byte signature 52 49 46 46 ("RIFF"). Detect the format by reading these leading bytes rather than trusting the file extension alone.
What is the MIME type of Audio Video Interleave?
The MIME type for Audio Video Interleave is video/x-msvideo.
What file extension does Audio Video Interleave use?
Audio Video Interleave files use the .avi extension. The extension is a convention only and does not guarantee the file contents, so combine it with signature and structure checks.