A common method is split-and-stitch where the file is cut into pieces and sent to multiple servers for transcode. That way you can transcode a file of any length in a fixed amount of time.
Telestreams Episode Engine can do this, but I'm sure Google uses something custom coded.
A custom video resolution has no bearing on quality here; only the choice of encoder, bitrate/rate factor and other parameters will impact the final result.
Youtube's player frame on its site is always 16:9, so if your video has an aspect ratio other than 16:9, YT will automatically add black bars as necessary. No need for the uploader to do so. However, if ...
Always. As does Vimeo.
You can as the publisher still access the original upload. That file is retained on youtube’s server.
But even when posting 1080, the public 1080 is a re-encode from your upload.
The problem comes from the video which should have the metadata projection=equirectangular. To fix it:
Install Python 3
Download Spatial Media
Unzip Spatial Media
Go into the folder (where there is a subfolder spatialmedia)
Copy the path of the folder
Launch cmd on Windows (by searching cmd on your system)
Go on the folder by typing cd and the path of the ...
The 360° video you downloaded is encoded as an equirectangular projection, meaning the video was projected onto a rectangular surface. This makes the video indistinguishable from a normal video.
In order to be recognized as a 360° video, the video must contain specific metadata. You can use a tool provided by Google for uploading videos to YouTube: Upload ...
Yes, youtube re-encode videos. You can see more information here, and find, which codecs most fits for youtube upload (in case you will make new ones).
As a example of degradation, here is video, which was re-uploaded to youtube 1000 times in 2010 year:
And with different content you will see more degradation. You can see ...
As you can imagine, a file that is compressed from 1.96gb to 100mb has lost a lot of information. The question is what you need to do with this film now. If you want to make a version to be shown in cinemas, that's not going to work well since you probably will see compression artifacts etc on a big screen. If you need to create a Sd DVD from it, probably ...