Video codec checker
Upload a video file and instantly see which codec it uses.
Your file never leaves your device. All processing happens right in your browser, and nothing is uploaded to a server.
Upload a video file and instantly see which codec it uses.
Your file never leaves your device. All processing happens right in your browser, and nothing is uploaded to a server.
Compatibility lives and dies on codecs, not extensions. The checker parses your file and names the exact video and audio codecs, the answer behind most "why won’t this play" mysteries.
H.264 plays everywhere. HEVC halves sizes but trips older devices. VP9 and AV1 rule the open web with patchy hardware support. Knowing which one you hold tells you whether to convert or ship as-is.