Convert AVI to JSON Online Free

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Converts to JSON on secure servers · first daily conversion free · no signup

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Extract the technical metadata of any AVI video as structured JSON — container info, video and audio codecs, bitrate, duration, resolution, and per-stream details. Powered by ffprobe.

By ChangeThisFile Team · Last updated: March 2026

Quick Answer

ChangeThisFile extracts metadata from your AVI file as structured JSON using ffprobe on a secure server. The output includes container format, video and audio codec details, bitrate, duration, resolution, frame rate, and per-stream information. Files are auto-deleted after conversion. Free, no signup required.

First daily conversion free No signup required Encrypted transfer · Async jobs kept up to 24h Queued when needed Updated May 2026

AVI vs JSON: Format Comparison

Key differences between the two formats

Feature	AVI	JSON
Type	Binary video container (RIFF-based)	Plain-text structured data
Purpose	Store interleaved audio and video chunks	Describe key/value hierarchies
Human-readable	No — binary payload	Yes — opens in any text editor
Contains	Multiple codec options: DivX, Xvid, MJPEG, MP3, PCM	Strings, numbers, arrays, nested objects
Container era	Microsoft, 1992 — still widespread legacy use	Web data interchange standard, 2001
File size	Often large — limited compression compared to modern containers	A few KB of metadata
Use case	Legacy video archives, camcorder dumps	Programmatic inspection and indexing

When to Convert

Common scenarios where this conversion is useful

Audit a legacy AVI archive

Inventory an old AVI library — camcorder rips, screen recordings, broadcast captures — by exporting each file's codec, resolution, and duration to JSON for triage.

Plan a batch transcode to modern formats

Inspect the codec mix in your AVI collection before migrating to MP4 or MKV so you can choose the right re-encoding parameters and detect problem files in advance.

Diagnose playback compatibility

AVI files often use exotic codecs (Cinepak, Indeo, MS Video 1) that modern players struggle with. JSON metadata reveals exactly which codec is inside so you can decide whether to re-encode or install a codec pack.

Build an automated ingest pipeline

Feed AVI metadata into an asset management system or transcoding queue using the JSON output as the authoritative source of codec and stream info.

Document video evidence

For surveillance, dashcam, or forensic recordings stored as AVI, capture a JSON record of duration, codec, and frame rate as part of a chain-of-custody report.

Who Uses This Conversion

Tailored guidance for different workflows

Developers

Convert AVI config files to JSON for compatibility with different tools or frameworks
Transform AVI API responses to JSON for debugging, logging, or documentation

Validate the converted JSON output with a linter to catch any structural issues from the conversion

Watch for data type coercion (e.g., numbers becoming strings) when converting between AVI and JSON

Data Analysts

Convert AVI exports to JSON for importing into spreadsheet software, databases, or BI tools
Transform AVI datasets to JSON for sharing with teammates who use different analysis tools

Check that column delimiters and quote escaping are handled correctly in the converted JSON file

Preview the first few rows of the JSON output to verify headers and data alignment

System Administrators

Convert AVI configuration to JSON when migrating between infrastructure tools or platforms
Transform AVI log exports to JSON for ingesting into monitoring or analysis systems

Back up the original AVI config before converting, especially for production systems

Test the converted JSON in a staging environment before deploying to production

How to Convert AVI to JSON

1

Upload your AVI file

Drag and drop your .avi file onto the converter, or click to browse. The free tier accepts files up to 25MB; eligible paid browser access accepts up to 100MB.
2

Server-side metadata extraction

Your file is uploaded over an encrypted connection and inspected with ffprobe. Container, video and audio codec, bitrate, duration, and frame rate are serialised as JSON.
3

Download the JSON

Click Download to save the resulting .json file. Your original AVI is automatically deleted from our servers after processing.

Automate this conversion

Convert AVI to JSON via API

Integrate this conversion into your pipeline with 3 lines of code. Free tier: 25 conversions/month.

curl -X POST https://changethisfile.com/v1/convert \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "file=@input.avi" \
  -F "target=json" \
  -o output.json --fail

const form = new FormData();
form.append('file', fileInput.files[0]);
form.append('target', 'json');

const res = await fetch('https://changethisfile.com/v1/convert', {
  method: 'POST',
  headers: { 'Authorization': 'Bearer YOUR_API_KEY' },
  body: form
});
const blob = await res.blob(); // your converted JSON file

Replace YOUR_API_KEY with your free key — no credit card needed.

Get a free API key

Frequently Asked Questions

Does this convert the video frames to JSON?

No. AVI video frames cannot be meaningfully represented as JSON. This tool extracts metadata — codec, bitrate, resolution, frame rate, duration, and stream layout. To convert the actual video, try AVI to MP4 or AVI to WebM.

Why is metadata extraction useful for AVI specifically?

AVI files use a wide range of codecs — some decades old — and many modern players silently fail to play them. The JSON tells you exactly which codec is inside so you can install the right decoder or re-encode preemptively.

What fields are included in the JSON output?

The output includes container format (avi), duration, overall bitrate, and one entry per stream with codec_name, codec_type, codec_tag_string, width, height, sample_rate, channels, and frame rate where applicable.

Is the AVI to JSON conversion free?

Yes. ChangeThisFile is completely free with no signup, no watermark, and no usage limits.

Are my files kept private?

Yes. Your AVI is transferred over HTTPS and automatically deleted from our servers immediately after the JSON is produced. We do not store or access your file.

Does this support old AVI codecs like DivX or Cinepak?

Yes. ffprobe can identify any codec it recognises, including DivX, Xvid, MJPEG, Cinepak, Indeo, MS Video 1, and PCM audio. The codec_name and codec_tag_string fields tell you exactly what is inside.

Can I parse the JSON output in code?

Yes. The output is standard JSON, compatible with any parser. The schema matches ffprobe's -show_format -show_streams JSON format.

Does this work for large AVI files?

Yes. ffprobe reads only the header and index, so even gigabyte-sized AVI files are processed in seconds. Files up to 100MB can be uploaded through the web interface with eligible paid access.

What if the AVI file is corrupted?

ffprobe will return whatever metadata it can recover and flag the rest. If the header itself is unreadable, the converter returns an error message instead of partial metadata.

Can I use this on mobile?

Yes. The converter works in any modern mobile browser, though most mobile devices do not record AVI natively — this is more useful when working with legacy desktop archives.

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