Video tools
Video Information
Check an MP4 for codecs, resolution, frame rate, bitrate, and audio or subtitle tracks. Preview and inspect the video locally without uploading it.
How to inspect an MP4
Use this viewer to check a video export or see which tracks a file contains. It reads one local MP4 at a time.
- Choose or drop an MP4 file from your device.
- Read the container, duration, and overall bitrate under File details. Open File size details for exact values.
- Check the video, audio, and subtitle sections for details about each detected track.
What the metadata tells you
MP4 is a container. It holds tracks that use codecs such as H.264 for video and AAC for audio. The viewer separates the overall bitrate from the bitrate reported for each track, when available.
Metadata can still appear when the browser cannot play the video. The viewer reads MP4 files; changing the extension of a MOV or WebM file does not convert it to MP4.
Example track report
Open the two-second sample MP4 to see one 160 × 90 H.264 video track at 24 fps, two mono AAC-LC audio tracks at 48 kHz, and one Timed Text subtitle track. The separate track lists help you confirm that an alternate audio language or subtitles made it into an export.