Free · no signup · browser-local
Video Frame Capture: PNG or JPEG Thumbnail
Capture a frame near your chosen timestamp as a real PNG or JPEG with size and quality controls.
Local files · native first · WASM when needed · no uploads
Your video stays on your device
Start with a local file or the attributed speech sample. The preview and actual output appear here.
Supported formats depend on the device. Unsupported or damaged files get an explicit message.
Getting started
Seek to the desired time, choose image settings and inspect the generated frame before download.
Before you use the result
Device-aware sources: 256 MiB–2 GiB per file and 1–4 hours combined, up to three clips, one video and at most one audio track, up to 1080p source. Native long outputs can use local temporary storage; WASM has separate input/output/working-memory budgets and up to 720p/30 FPS. Actual codecs, memory and storage are checked; compression is not guaranteed.
Try an example
Capture the moving test pattern at one second as PNG and JPEG.
How it works
Browser-native WebCodecs and Mediabunny are preferred; fixed single-thread FFmpeg WASM operations cover missing codecs and other supported tasks. Inputs and outputs are checked for dimensions, duration and expected tracks; long native results use bounded sample checks and can stream to private local temporary storage. No server conversion or arbitrary commands.
Frequently asked questions
Capture a frame near your chosen timestamp as a real PNG or JPEG with size and quality controls.
How do I use Video Frame Capture: PNG or JPEG Thumbnail?
Seek to the desired time, choose image settings and inspect the generated frame before download.
Does this tool upload my data?
Inputs and files are processed in your browser. Page-view analytics do not contain your tool input.
What should I check before using the result?
Device-aware sources: 256 MiB–2 GiB per file and 1–4 hours combined, up to three clips, one video and at most one audio track, up to 1080p source. Native long outputs can use local temporary storage; WASM has separate input/output/working-memory budgets and up to 720p/30 FPS. Actual codecs, memory and storage are checked; compression is not guaranteed.