Why Does Html5 Video With Very Large H.264 Encoded Mp4 (with +faststart, Ie Metadata At Beginning), Take Ages To Load?

The video is rendered with ffmpeg with the 'faststart' flag added meaning the metadata should be at the start of the file, and the server appears to be handling partial content req

Solution 1:

The problem lies in the duration of the video, I don't know the exact duration of the video, but I can estimate based in the video size.

The reason is the video player implementation reads some pieces around the video to take some information information for the playback and forward and to ensure that the header is well formed.

For this reason is very important make use of streaming protocols such HLS o DASH because the situation of time stamps is different and it is optimized for streaming.