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Bounties

499 bytes removed, 16:05, 13 September 2011
m
Reverted SPAM link
let people contribute to specific bounties through paypal.
=== Xiph Quicktime Plugin ===
[http://www.xiph.org/quicktime/ QuickTime Components] is now a project hosted on xiph.org.
=== OggVorbis 5.1 ===
5.1 Sound encoding in Ogg Vorbis.
 
There are two steps here. Simple coupling and lowpass for the .1 channel, and a full set of tuned modes.
They should be separate bounties.
 
:This should be implemented with ambisonics as the internally coupled channels, and then use ambisonic g-format filters for en/dec coding from and to 5.1. This will allow correct playback on many different speaker layouts and an easy path to headphone support.
 
=== Xiph Quicktime Plugin ===
You have to write a Quicktime Plugin for the Ogg container and the Xiph Codec Family.
[http://qtcomponents.sf.net qtcomponents] provides support for Ogg Vorbis and MNG. This could be used as start.
All work must be released under the GPL.
 
Proposed bounty: 100€
=== Aggressive low-bitrate libvorbis encoding improvements for Vorbis I ===
<p>libvorbis has a lot of room for improvement in all quality/bitrate departments, particularly at the lower quality levels / bitrates. There are many directions from which to approach this problem from.</p> 
To claim this bounty, the following criteria would have to be met:
* A 25%-or-better reduction in bitrate for quality levels -1, 0, 1 on a reasonable testsuite while maintaining qualitative equivilence (or improvement) in community testing.
* Changes under suitable license for re-integration with Xiph.Org libvorbis
Proposed bounty: 200€
=== iPod playback support ===
for useful playback.
=== FLAC support in libfishsound ===[httpProposed bounty://annodex.net/software/libfishsound/ libfishsound] currently only supports Ogg Vorbis and Ogg Speex. It should be extended to support FLAC to complete the set of Xiph audio codecs.100€
=== Ogg Vorbis Bitrate Peeling ===
:Note: a bounty for this project has been posted on [https://launchpad.net/ launchpad.net]: [https://launchpad.net/bounties/ogg-vorbis-bitrate-peeling Add bitrate peeling to the standard libvorbis encoding library].
<p>Ogg Vorbis bitrate peeling has been a topic brought up time and again to combat MP3 enthusiasts. But this feature does not actually exist, only the mere possibility abounds. This bounty is set to change that.</p>
The peeler must meet the following criteria:
* Any (optionally transcoded) Vorbis stream can be losslessly re-encoded converted (not transcoded) to a lower quality setting
* Resulting streams would be identical or nearly identical to a stream generated by encoding the original source to the selected quality
* This process is reasonably fast (that is, signifigantly faster than re-encoding from source)
* Old Vorbis streams must be <em>peelable</em> already, or convertable with a utility in order to be made <em>peelable</em>
* If older streams are not natively <em>peelable</em>, old <em>unpeelable</em> Vorbis streams must be identifiable and discernable from <em>peelable</em> streams in such a way as to facilitate transcoding streams from the old format
* All work submitted must be licenced under the GPL or compatible a BSD style licence (excepting circumstances where other licences may conflict) ''[Note Proposed bounty: In the GPL-alike case the contribution couldn't be re-integrated with the reference Vorbis encoder/decoder... do we need to stipulate a libvorbis-compatible license like the BSD/X11?]''100€

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