Video Codec & Container Detector
Upload a video and instantly inspect its container, codec, resolution, frame rate, duration, bitrate, audio information, MIME type, file size, browser playback support, and other useful technical details. Everything is processed locally in your browser.
Video Input
Technical Information
| File Name | — |
|---|---|
| File Extension | — |
| MIME Type | — |
| Container Detection | — |
| Video Codec Detection | — |
| Audio Detection | — |
| Dimensions | — |
| Aspect Ratio | — |
| Duration | — |
| Estimated Frame Rate | — |
| Estimated Bitrate | — |
| Browser Support | — |
Detection History
- No videos analyzed during this session.
About Video Codec & Container Detector
Ever received a video and wondered exactly what format it is? Maybe someone sent you an MP4, but you need to know whether it uses H.264, H.265, AV1, VP9, or another codec. Or perhaps you need to determine whether a file is actually MP4, MOV, WebM, MKV, AVI, MPEG-TS, OGG, or another container.
That is exactly what Video Codec & Container Detector is designed for. Upload a video and the tool examines available file signatures and browser media information to provide useful technical information without requiring desktop software.
What Is a Video Container?
A video container is the file format that holds the video stream, audio stream, subtitles, metadata, chapters, and other information. Common containers include MP4, MOV, MKV, WebM, AVI, MPEG-TS, OGG, and 3GP.
The container and codec are not the same thing. For example, an MP4 file can contain H.264 video with AAC audio, while another MP4 can contain HEVC video with different audio.
What Is a Video Codec?
A codec is the technology used to compress and decompress the actual video or audio stream. Common video codecs include H.264/AVC, H.265/HEVC, AV1, VP8, VP9, MPEG-4 Part 2, and Theora.
Knowing the codec can be extremely useful when troubleshooting playback problems, converting videos, preparing files for social media, checking compatibility, or optimizing videos for websites.
What Can This Tool Detect?
- Container / file format
- Likely video codec
- Likely audio codec
- Video resolution
- Video width and height
- Aspect ratio
- Video duration
- Estimated bitrate
- Frame-rate information when available
- File size
- File extension
- MIME type
- Browser playback compatibility
- Codec detection confidence
- Container detection confidence
Supported Containers
The detector can identify many common video containers and file structures, including:
- MP4
- M4V
- MOV / QuickTime
- MKV / Matroska
- WebM
- AVI
- Ogg / OGV
- MPEG Program Stream
- MPEG Transport Stream
- 3GP / 3G2
- Windows Media / ASF
- FLV
Common Video Codecs
- H.264 / AVC: One of the most widely supported video codecs.
- H.265 / HEVC: Efficient codec commonly used for high-resolution video.
- AV1: Modern royalty-free codec designed for efficient compression.
- VP9: Popular web-oriented codec commonly found in WebM files.
- VP8: Older web video codec frequently associated with WebM.
- MPEG-4 Part 2: Older MPEG video compression format.
- Motion JPEG: Video made from individually compressed JPEG frames.
- Theora: Open video codec commonly found in Ogg video.
Common Audio Codecs
- AAC
- Opus
- Vorbis
- AC-3
- E-AC-3
- FLAC
How to Use the Video Codec Detector
- Open the Video Codec & Container Detector.
- Drag a video onto the upload area or click it to select a file.
- Wait while the browser reads the video information.
- Review the container and codec information.
- Check the resolution, duration, bitrate, frame rate, and other metadata.
- Copy the technical report if you need to share it.
- Download the report as TXT or JSON when needed.
Why Check the Codec?
Two videos can have exactly the same MP4 extension while behaving completely differently. One may use H.264 and play almost everywhere, while another may use HEVC and have limited compatibility depending on the device, operating system, browser, or application.
Checking the codec before converting or uploading a video can save time and help diagnose unexpected playback problems.
Useful for Content Creators
YouTubers, TikTok creators, social-media managers, video editors, website owners, teachers, students, and businesses can use this tool to quickly inspect video files before publishing or processing them.
Useful for Video Troubleshooting
If a video refuses to play, checking its container and codec is often a useful first troubleshooting step. You can compare the detected format with the formats supported by the application or device where playback is failing.
Browser-Based and Privacy Friendly
This tool is designed to perform its analysis directly in your browser. Your original video is not intentionally uploaded to our server for codec detection.
This makes the tool particularly useful when you are working with private recordings, personal videos, client files, or other content that you do not want to upload to an online video-analysis service.
Is It Really Free?
Yes, with reasonable usage limits.
Free users get 10 queries per tool per day for personal use only. This is suitable for personal projects, school work, social media, hobbies, testing, and non-commercial tasks.
If you need unlimited usage or commercial use rights, you can upgrade to Premium.
Premium provides:
- 🔓 Unlimited queries per day
- ⚡ Priority processing
- 🚀 Commercial usage rights
- 🎯 Access to tools without usage limits
What Does the Confidence Score Mean?
The confidence score tells you how strongly the available file information points toward a particular container or codec.
A codec discovered directly from a recognizable file structure is generally more reliable than one inferred only from the filename extension.
Because this is a browser-based detector rather than a full professional media-analysis engine such as FFmpeg or MediaInfo, some unusual or proprietary files may only provide partial information.
Why Wasn't My Codec Identified?
Not every browser exposes complete codec metadata to JavaScript. Some containers also store their stream information in structures that are difficult to inspect efficiently without a complete media parser.
In these cases the tool may correctly identify the container while showing the video codec as unknown or not identified. This does not necessarily mean the video is damaged.
Estimated Bitrate
When the file size and duration are available, the tool estimates the overall bitrate using the file size divided by its duration. This is an overall file bitrate and should not be confused with the exact video-stream bitrate reported by professional media-analysis software.
Detection History
The tool keeps a small detection history during your current browser session. This makes it convenient to compare several videos without having to write down the results manually.
JSON Technical Report
Developers and advanced users can download the detected information as JSON. This can be useful when documenting media files, building workflows, or manually processing the results with another tool.
TXT Technical Report
The regular report is designed to be easy to read and share with another person when troubleshooting a video or communicating technical specifications.
Who Should Use This Tool?
- ⭐ Video editors
- ⭐ YouTubers
- ⭐ TikTok and social media creators
- ⭐ Website developers
- ⭐ Bloggers
- ⭐ Students
- ⭐ Teachers
- ⭐ Digital agencies
- ⭐ Video conversion users
- ⭐ IT and technical support teams
- ⭐ Anyone troubleshooting a video
Example
Imagine you have a file named client-video.mp4 that will not play on an older device. Instead of guessing, upload it to the detector. You might discover that it is an MP4 container using H.265/HEVC video. If the target device only supports H.264, that immediately explains why the video may not work there.
Important Limitations
- Codec detection depends on information available inside the file.
- Some proprietary or unusual formats may provide limited information.
- Browser APIs do not expose every media metadata field.
- Frame-rate information may not be available for every file.
- Bitrate shown by this tool is an estimate based on file size and duration.
- Container detection is more reliable when the actual file signature is available.
- Professional applications may expose more detailed stream-level metadata.
- Free usage is limited to 10 queries per tool per day.
- Commercial usage requires Premium according to the site's plan terms.
Premium – Is It Worth It?
If you regularly inspect videos for work, content creation, development, client projects, or large media collections, Premium removes the daily usage restriction and provides commercial usage rights.
Summary of Features
| Free Users | Premium Users |
|---|---|
| ✔️ 10 queries/day | 🔓 Unlimited queries/day |
| ✔️ Personal use | 🔥 Commercial use allowed |
| ✔️ Browser-based detection | 🚀 Priority speed & performance |
| ✔️ Basic codec/container detection | ⭐ Access to tools without limits |
| ✔️ TXT and JSON reports | ✔️ Unlimited use |
| ❌ No commercial license | ✔️ Full commercial license |
Why SmallVideoTools.com?
Because video utilities should be quick, simple, privacy-friendly, and easy to understand. You should not need a complicated desktop application just to answer a simple question such as “What codec is this video using?”
Final Words
The Video Codec & Container Detector gives you a convenient way to inspect video files before uploading, editing, converting, publishing, or troubleshooting them.
Upload a file, check the container and codec, review the technical information, copy the report, and download the results when needed. Everything is designed to be fast and simple.
smallvideotools.com — Small Tools. Big Help.