TFT
100% Free & Private

Free Online Video & Audio
Metadata Viewer

Read codec, resolution, frame rate, bitrate, sample rate, and channel count directly from any video or audio file. Results appear in under a second. No uploads, no software, and no account required.

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All Formats
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Supported: MP4, MOV, WebM, MKV, MP3, WAV, AAC, FLAC, Ogg, MPEG-TS

What it Does

This tool reads the header data embedded in your video or audio file and displays the technical properties stored there. Those properties include the video codec, resolution, frame rate, bitrate, duration, audio codec, sample rate, and channel count. Understanding these values helps you diagnose playback problems, verify delivery specifications before submitting to a broadcaster or platform, and decide which settings to use when converting a file. All reading happens in your browser so no data leaves your device.

How to Use

1

Load your file

Open the file picker or drag your video or audio file onto the tool. The analyzer accepts MP4, MOV, MKV, WebM, MP3, WAV, AAC, and other common formats. The file is read from your local drive and never uploaded to a server.

2

Review the results

The tool reads the file headers and displays the metadata within a second. Review the codec identifiers, resolution, frame rate, bitrate, and audio properties. If a value looks wrong or unexpected, that is often the cause of a playback or compatibility problem.

3

Use the data to take action

Use the codec name to find a compatible converter. Use the resolution to confirm the file meets a platform's upload requirement. Use the bitrate to estimate whether the file is over-compressed. The metadata gives you the specific facts you need to decide the next step.

Use Cases

Verifying the actual resolution of delivered footage

A client delivers a file labeled as 4K. The metadata viewer shows the resolution is 1920x1080 with upscale flags in the container. You can confirm the discrepancy before accepting the delivery and request the correct source files without needing to play the whole video first.

Diagnosing playback errors

A video file plays picture but produces no sound on a specific device. The metadata viewer shows the audio track uses AC3 encoding rather than AAC. Most browsers and mobile devices do not have an AC3 decoder, so the audio track is silently dropped. Converting the audio to AAC resolves the problem.

Confirming broadcast delivery specs

Television and streaming platform deliveries require specific frame rates, bitrates, and codec identifiers. Before submitting a finished file, check the metadata to confirm the frame rate is exactly 23.976fps, the bitrate falls within the required range, and the video codec matches the specification sheet.

Auditing an audio archive

A batch of old podcast episodes needs to be re-uploaded at a consistent quality level. Check each file's bitrate and sample rate using the viewer. Files encoded below 128kbps or at 22kHz sample rate can be identified quickly so you know which ones need to be sourced from the original recordings rather than re-encoded from the existing compressed files.

Checking codec compatibility before embedding

WebM files using VP9 video save bandwidth on most browsers but do not play in Safari. Before embedding a video on a website, check the codec identifier in the metadata. If it shows vp09, you need to provide an H.264 MP4 fallback so Safari users see the video rather than a blank player.

Settings Explained

Codec Identifier

The codec identifier tells you the specific algorithm used to compress and store the video or audio data. Common video codec identifiers include avc1 for H.264, hev1 or hvc1 for H.265, and vp09 for VP9. Common audio identifiers include mp4a for AAC and ac-3 for Dolby. Knowing the codec lets you find the right converter or decoder when a file will not play on a specific device.

Bitrate

Bitrate measures how much data is used per second of video or audio, usually expressed in kilobits per second (kbps) or megabits per second (Mbps). A higher bitrate means more data per second, which generally preserves more image or sound detail. A very low bitrate explains visible blockiness during fast motion or heavy compression artifacts in still frames.

Resolution and Frame Rate

Resolution is the pixel grid size, expressed as width by height. Common values are 1920x1080 for Full HD and 3840x2160 for 4K. Frame rate is the number of still images shown per second, expressed in frames per second (fps). Common values are 24fps for film, 30fps for broadcast, and 60fps for sports and gaming. These two values together define the format of the video track.

Frequently Asked Questions

Everything you need to know about this tool

Open the file picker or drop your video onto the tool. The analyzer reads the file headers in your browser and displays the width, height, frame rate, codec, and bitrate within a second. No software download is needed and the file is never sent to a server.
No. The analyzer uses browser File APIs to read the file headers from your local device. The video data is processed in your browser's memory and never transferred over your network connection. This means even multi-gigabyte files produce results almost instantly.
The tool reports the codec identifier for both the video and audio tracks. For video, common values are avc1 for H.264, hev1 for H.265, and vp09 for VP9. For audio, common values are mp4a for AAC and ac-3 for Dolby AC3. Knowing the codec helps you identify whether a file will play on a specific device or whether it needs to be transcoded.
The codec identifier in the metadata usually explains this. A file using an H.265 video track or an AC3 audio track will not play on devices that lack a hardware or software decoder for those formats. The metadata viewer shows you the exact codec string, which tells you which format to convert the file to so it plays on the target device.
Yes. The tool supports audio files as well as video files. For an MP3 or AAC file, it reports the audio codec, bitrate, sample rate, and number of channels. For a WAV file, it reports the sample rate and bit depth. This is useful for checking audio quality before editing or distribution.

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