Inspect first, keep the source untouched
A read-only check is the lightest operation. It helps you decide whether the source already meets a destination’s measurable limits before considering a trim, container change, or re-encode.
Local video inspector
See the video facts before you change anything.
Choose one common video file to read browser-observable duration, display dimensions, bytes, container hint, and local playback support. Inspection does not create a copy.
Your video stays on this device. No upload, account, or server-side processing job.
Browser-local workspace
Open the private video workspace when you are ready.
Choose one local MP4, M4V, MOV, or WebM file. JavaScript activates a browser-native preview and capability check; available conversions depend on the codecs supported by this device.
No upload, account, or server-side media job.
Open private workspace Loads only after you choose to open it.
Codec detail comes from the local parser
Native browser metadata exposes duration and display size, while the local worker adds available codec, audio-track, sampled frame-rate, and rotation facts without sending the file away.
Private browser processing
Your video remains in your hands.
Aftermath reads selected video bytes only in the current browser. Unsupported codecs are reported clearly rather than sent to another service. High-resolution conversion can use substantial device battery and processing.
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