About a month ago the Blender folks released a new film project named Cosmos Laundromat.
Two days ago the ffmpeg folks released version 2.8. I saw one of the changes was that for webm they are now defaulting to using the vp9 video codec and the opus audio codec. Previous releases defaulted to webm with vp8 and ogg.
I've been following vp9 for a few years now... and every once in a while I'd try the libvpx tools and ffmpeg's support for vp9... but it was never quite there yet for non-experts (me). With this release, I say that vp9 is very, very close to viable. The only problem is that the encoding speed still leaves a lot to be desired. For the best results, two pass encoding is required. Using a number of 1080p video sources in h.264 format (all of the Blender films downloaded from YouTube) and a contemporary Intel i7 CPU, I get a little over 100 Frames Per Second (FPS) on pass 1 and between 7 - 9 FPS on pass 2. With a video that is ~24 FPS (all my source videos) it takes a little over 3x realtime to encode them. Well, more because of the two passes. The more popular codecs in ffmpeg are better than real time including vp8/ogg-based webm. Of course those numbers are all highly variable depending on the source material and the hardware you run it on... but you get the idea.
Ok, so encoding speed isn't so great. I'm sure that will get better over time. I'd expect it to be cut in half sometime over the next couple of years... if we are lucky... that and faster hardware... and perhaps GPU encoding support in newer hardware.
But anyway, enough about the encoding speed, how is the quality? Well, see for yourself. I think it truly lives up to the 1/2 the filesize for the same quality compared to vp8/ogg or h.264. I embed Cosmos Laundromat above then directly link to additional ones below if you want more. vp9/opus webm files should play in contemporary versions of Firefox, Google Chrome, Microsoft IE if you have some plugin installed (haven't tried it) and supposedly coming soon to Microsoft's Edge browser in Windows 10. Safari? Probably never. Play in your browser or right-click download and play with your preferred media player.
Don't blame any download / playback retrieval slowness on vp9... it's probably a lack of bandwidth on the server side... so be patient and pause it until some is buffered. Moving around the playhead should work fairly well unless bandwidth is an issue.
Full screen that if you want. Doesn't that look great? It's 720 x 302 resolution with 400 kbit video and 96 kbit audio. That's why all of the files have 496k in the name. So that's like 62KB / second transfer. Pretty good quality huh?
More vp9 re-encodes with ffmepg 2.8:
2006-Elephants_Dream-496k.webm (38.4MB, 10:53)
2008-Big_Buck_Bunny-496k.webm (31.8 MB, 9:56)
2010-Sintel-496k.webm (52.9 MB, 14:48)
2012-Tears_of_Steel-496k.webm (43.3 MB, 12:14)
2013-Caminandes-Gran_Dillama-496k.webm (8.7 MB, 2:26)
Want to know how it works on Hollywood / live action movies? Here's the trailer for the upcoming film, "The Martian". I don't think I'll get into any trouble for posting a trailer, right? Again, 720 x 405 @ 496 kbit. The black bars were in the original and I didn't remove them.
2015-The_Martian-Trailer-496k.webm (11.5 MB, 3:17)
Want to give vp9 a try? I doubt many distros have packages for ffmpeg 2.8 yet but you can download the static .tar.xz from ffmpeg's site and run it on most Linux distros. That's what I did. I'll leave finding the URL up to the reader because it will certainly change.
So far as encoding goes, I didn't do anything fancy. Just something like:
ffmpeg28 -y -i source.mp4 -f webm -vf scale=720:-1 -b:v 400k -an -pass 1 output.webm.pass1 ;
ffmpeg28 -y -i source.mp4 -f webm -vf scale=720:-1 -b:v 400k -b:a 96k -pass 2 output.webm
I took the static ffmpeg binary and plopped it in ~/bin/ffmpeg28 so I could easily tell it apart from the stock ffmpeg binary. Enjoy!
Everyone knows Red Hat's Dan Walsh as the SELinux guy... and more recently as the guy who pronounces Docker in a Boston accent as "Dockah". Turns out he was the subject of a recent TNT Network's Rizzoli and Isles episode. Enjoy. Oh, and, "All roads lead... to Dan Walsh." (the missing last 3 seconds)
For those with iFrame issues, here's the direct link: dan-walsh-mystery.webm
I ran across this video today. I know there is a lot of fever over the $9 C.H.I.P. but I found it very interesting listening to one of the C.H.I.P. guy talk about the challenge and the rewards of such a project. Enjoy!
Ever experienced a presentation by Michael Meeks? He reminds me of Monty Python... but I digress. Michael is a well known LibreOffice person and here is a recent talk (published June 26, 2015) from him for, I assume, the Swish Open Source User Group.
I decided today would be a good day to post this because LibreOffice 5 was released. Enjoy!
For anyone who hasn't seen this yet who is interested in containers, this is a must see. Watch Red Hat's SELinux guru Dan Walsh explain and demo Super Privileged Containers from the Red Hat Summit 2015. Enjoy!
For those who are iFrame challenged, here's the direct YouTube link: https://www.youtube.com/watch?v=dM2Fc53Dtd4
Oh look... another presentation by Lennart on systemd... this one from the CoreOS Fest 2015. Enjoy!
For those who are iFrame challenged, here's the YouTube link: https://www.youtube.com/watch?v=VIPonFvPlAs
If you haven't seen the pilot episode of USA's new series, "MR. ROBOT"... you can see the whole thing on YouTube... until they decide to take it down. Anyway, there was an exchange about GNOME vs. KDE and Linux is even mentioned. Here's the 1 minute clip. Enjoy!
I guess they haven't seen Plasma 5 yet. It's da'bomb!
Here is a preview video of the upcoming Fedora 22 release (running in a KVM VM). This is my personal remix (with non-Fedora provided rpmfusion-free packages, google-chrome-stable, and flash-plugin added) and I haven't bothered with the branding nor customization at all... and I don't really publicly distribute it.. but I'd be happy to share my kickstart file if anyone wants it.
In the video I show the install process, and then show all of the desktop environments that are pre-installed which include... GNOME 3.16.1, Plasma 5.3.0, LXQT 0.10, MATE 1.10, XFCE 4.12.1, and Cinnamon 2.4.8. Enjoy!
Please Note: The official Fedora live media always automatically logs the liveuser in... but on my personal remix I haven't bothered to set that up so I have to put in "liveuser". Again, the Fedora media is NOT like that.
Author George Dyson contrasted the Hollywood movie "The Imitation Game" with reality.