I try to buffer an entire video streaming for playing it without any break at all. The idea is to start the video streaming, "stop it / Pause it" and wait for a while then restart it. This way it would not make any pauses when the streaming is too slow. I check already the post: https://support.mozilla.org/en-US/questions/1168957 I work with the version 74.0 (64 bit). I set up in the "config": * media.cache_readhead_limit to 9999 * media.cache_resume_threshold to 9999 * media.cache_size to 512000000 (instead of 512000) It looks like the buffer never keeps the video data after "loading" part or all of the video! 1- After a very long time the video is frozen and does not restart. 2- After a while I can restart the video (halting the PAUSE, returning to PLAY) but the internet traffic of the loading of the streaming is also restarting with break times as slow connection. I ran a few experiences by checking the "Internet Traffic" when the only activity of my home connection is the video streaming. Is there a way to config Firefox for retaining the whole entire video stream into the video buffer and watch the video without any break during the PLAY? Thanks in advance for your help and answer. Best regards. Richard.