Saturday, July 16, 2016

Some Fun Video Stats

Part of the reason I made the last post, 119 GB, was so that I could make this post after the videos finish re-encoding with some statistics from it.
The original FEAR archive files totaled some 119 GB. The compressed archives though come in at 59.9 GB, which is a huge improvement for my limited HDD space. I was also able to get some benchmark information out of FFmpeg for two of the files. One of them took 16 hours, 45 minutes, and 20 seconds of CPU time and the other took 20:28:27. I actually start both of these files re-encoding at about the same time, and they finished about ten minutes apart, which is why it is important to note it was CPU time, not real time. Pretty sure that means how much time a single core of my CPU would have taken to complete it, and since I am doing on an Intel dual-core with hyperthreading, that would explain why it really took more like 8-10 hours. FFmpeg probably just shifted resources around, which would be why one file took an extra four hours of CPU time.
For the future, I have changed the command that makes the final videos that get uploaded to also make these archive files. This should save me some time, just because I will not have to remember to make the compressed archives. The actual re-encoding might take long, as there is more encoding to do, but at the same time there is less decoding, because the source files only have to be decoded once. There should be no influence on the quality of the uploaded videos though.

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