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So, I'm developping an easy interface for my client, so they can make content for an app that use supabase as a backend.

Amoung the types of contents, their is stuffs that require my client to upload a video or choose from those in a supabase bucket.

Since my client doesn't want to pay a ton of money in bandwidth, I want to help them save cost by only showing the first frame of a video that already is on supabase, that would act as a thumbnail, so they can choose the correct video.

Is it possible to do something like that with supabase ?

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  • Find out if Supabase server can accept "ranged requests". The answer of how & what to do with these requests will depend on the video format itself (what are you working with here? MP4? WebM?). Generally the process means: (1) Read the expected header byte size and all bytes up to length of first frame's ending byte position. (2) Pass those extracted bytes (put in Array) to the built-in createObjectURL function and use the result of it as .src of the video tag. This would show you a one-frame preview... PS: The more professional solution is to get/paste frame data into a template video Commented Apr 16 at 7:17
  • (...forgot to paste...): In the above, "Template video" means some already pre-saved one-frame video (ie: make one with a video editor). The idea is to read bytes of the client's video and extract the first frame (so you need to understand the un-mentioned video format), then overwrite the bytes of template's existing one frame (usually a key frame, but again that type/setting depends on the specific video format). PPS: Since you have a client you might not have time to learn, try a tool like FFmpeg or hire a JS coder who can create just functions to read the video format bytes. Commented Apr 16 at 7:34
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