![]() Then load the Story, if you look at the network tab this time, and filter the urls for mp4, you should see a url for a single combined video and audio file, that you can copy and paste into your browser, then once its loaded you should be able to save the file. Then change it to the mobile website version by replacing "www" with "m" Update Having said all that, on the mobile version of the website, facebook does serve complete video/audio files, so if you get the URL for the Story from the desktop site, e.g Once you have both files you would need to combine them in a video editor to get a single video file with audio and video merged. Once you have 2 unique MP4 file URLs, alter the bytestart parameter to 0 and the byteend parameter to something really large like 9999999 (im not sure what the max byte size you can use is, but you could experiment with it, if you are not getting the complete file, try making the byteend number larger. To get the complete video file and complete audio file, you would need to get the URLs for both MP4 files. put the text MP4 into the filter function, so only urls matching the text MP4 are displayed. I found out this info by opening the developer tools in the chrome browser, and looking at the Network Tab while a video file was playing. ![]() The URL used to load the chunk of MP4 file specifies the bytestart and byteend as parameters to tell the server which section of the video or audio file is being loaded.įacebook glues the chunks together into the blob that you see when you inspect the video URL in the page's HTML code. The two files are loaded in chunks (streamed). They seem to store the video in 2 separate files, the video file and the audio file, both stored as MP4 files. Strangely, Facebook does not have a single file for videos.
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