streaming video recording

I'd like to engage in a purely hypothetical technical discussion on how one might record streaming video sources. Screen capture software, screen casting - all new concepts to me. Is it possible to reliably record a video stream from the internet with properly synched audio?

Just wondering.

Hypothetically speaking there exists several ways to do such a venture as discussed here: http://www.digitaltrends.com/computing/how-to-download-youtube-videos/

Now if you use the Chrome browser, you could use this tool for Vimeo.: https://chrome.google.com/webstore/detail/vimeo-download-videos/geeljcibkkackafmeepgadbfgmpjmdeg?hl=en

You can also download youtube videos in Chrome by following these directions I found here.

With a bit of tinkering around with the above code, also downloading the video in MP4 is possible.

Same as above, create a new bookmark (It's probably best to name the above Download YouTube in FLV and then name this one Download YouTube in MP4) then add the following code in the address field:

javascript:window.location.href = 'http://youtube.com/get_video?video_id=' + swfArgs['video_id']+ "&fmt=18" + "&l=" + swfArgs['l'] + "&sk=" + swfArgs['sk'] + '&fmt_map' + swfArgs['fmt_map'] + '&t=' + swfArgs['t'];

Save then use the same way as the above.

If you are looking to record nearly ANY video stream, you could use VLC Media Player which is a VERY nice media player that has yet to NOT play any format I can throw at it. If you do use VLC you could use the instructions that I found here: Use VLC to record streaming video

Thanks AC...always fun to think hypothetically...if you have any other ?s, feel free...I can find ANYTHING on the Internet...and I am NOT bragging.

If it's pre-rendered content like youtube or vimeo, you can just look for the .flv request in the network tab of Chrome dev tools (F12). Load a video, and it's usually the longest running request. You should be able to figure out the URL for direct download.

If it's screencapture you want from live streaming sources, look up XSplit for recording selections of your screen into raw video, and Adobe Media Encoder for transcoding/re-streaming. Both are free (but XSplit can do it all for a price).

Mozilla has an add on that "I hear" works well called download helper. Ok freebie,