On Tue, 2014-01-07 at 00:19 +0200, ilias.k.cs@freemail.gr wrote:
Thanks for your answers! :) By free format, I meant a format with an open specification, and by `same image quality` I was somewhat informal there :) but I won't bother you anymore with this. I was asking because I'm in the process of replacing everything I'm doing on the computer with free equivalents, and I guess I'll be using vp8 and vp9 as you suggested in order to convert my proprietary stuff, whenever possible(I already use Vorbis for audio, and it works like a charm). ;) Thanks again!
For video Webm/VP8 [1] have open specifications, of course there is also Theora [2] (though not as good as VP8 imo) from Xiph.org [3] the same one that created Ogg/Vorbis [4]. For the future I would keep an eye on VP9 [5] from Google and even more on Daala [6] again from Xiph.org/Mozilla, seem very promising.
For audio I started moving to Opus [7] also from Xiph.org/Mozilla (made in collaboration with Skype, fully open) and now also an IETF Proposed Standard [8].
HTH, Simo.
[1] http://www.webmproject.org/license/bitstream/# and see the Docs tab in the page for the actual format technical specifications [2] http://www.theora.org/ [3] https://www.xiph.org/ [4] http://www.vorbis.com/ [5] http://blog.webmproject.org/2013/07/vp9-lands-in-chrome-dev-channel.html [6] https://xiph.org/daala/ [7] http://www.opus-codec.org/ [8] http://tools.ietf.org/html/rfc6716