[gentoo-dev] New global use flag: vpx or vp8
vpx for supporting googles vp8 codec used in webm. At the moment this is only mplayer and ffmpeg, but it's pretty obvious that apps supporting vp8 will start popping up everywhere (currently working on arista ebuild which will support it). Though we might discuss if vpx is really a good name or it shouldn't be vp8. -- Hanno Böck Blog: http://www.hboeck.de/ GPG: 3DBD3B20 Jabber/Mail:ha...@hboeck.de signature.asc Description: This is a digitally signed message part.
Re: [gentoo-dev] New global use flag: vpx or vp8
On 7/31/10 4:37 AM, Hanno Böck wrote: > vpx for supporting googles vp8 codec used in webm. > > At the moment this is only mplayer and ffmpeg, but it's pretty obvious that > apps supporting vp8 will start popping up everywhere (currently working on > arista ebuild which will support it). Just verifying: does the vpx USE flag in ffmpeg control the support for encoding vp8, decoding it, or both? How should www-client/chromium depend on ffmpeg to make sure it will support vp8? > Though we might discuss if vpx is really a good name or it shouldn't be vp8. It might also be webm. Not sure what's more intuitive for people. Also, nteresting question would be whether to enable the flag by default an in which profiles (desktop?). Paweł signature.asc Description: OpenPGP digital signature
Re: [gentoo-dev] New global use flag: vpx or vp8
On Sat, Jul 31, 2010 at 4:09 PM, "Paweł Hajdan, Jr." wrote: > On 7/31/10 4:37 AM, Hanno Böck wrote: >> Though we might discuss if vpx is really a good name or it shouldn't be vp8. > > It might also be webm. Not sure what's more intuitive for people. Also, > nteresting question would be whether to enable the flag by default an in > which profiles (desktop?). Speaking as a user, I would ask what the standard file ending is? Most users won't know what the codec is, they will just know is foo.webm or foo.vpx/8. Just a thought if debating the name. RobbieAB.
Re: [gentoo-dev] New global use flag: vpx or vp8
On Sat, 31 Jul 2010 16:30:06 +0100 Robert Bridge wrote: > Speaking as a user, I would ask what the standard file ending is? Most > users won't know what the codec is, they will just know is foo.webm or > foo.vpx/8. > > Just a thought if debating the name. Honestly not sure what convention is for naming, but I found this recently, and thought I might throw it out there: ~ $ euse -i lame [+ C ] lame - Prefer using LAME libraries for MP3 encoding support While, as a user, I prefer this to be mp3, I also understand there may be more than one library for such-and-so, so I'm willing to read up on USE flags to find out which is the best to use. Overall, I would prefer naming according to the names of the libraries they'll enable. -- Jacob "For then there will be great distress, unequaled from the beginning of the world until now — and never to be equaled again. If those days had not been cut short, no one would survive, but for the sake of the elect those days will be shortened." Are you ready? signature.asc Description: PGP signature
Re: [gentoo-dev] New global use flag: vpx or vp8
On Saturday, July 31, 2010 14:27:14 Jacob Godserv wrote: > Honestly not sure what convention is for naming, but I found this > recently, and thought I might throw it out there: > > ~ $ euse -i lame > > [+ C ] lame - Prefer using LAME libraries for MP3 encoding support > > > While, as a user, I prefer this to be mp3, I also understand there may > be more than one library for such-and-so, so I'm willing to read up on > USE flags to find out which is the best to use. Overall, I would prefer > naming according to the names of the libraries they'll enable. that example isnt relevant. notice how the description includes the word "prefer" and isnt just "enable mp3 support". USE=mp3 is how you get mp3 support. if there are multiple options (like ffmpeg or lame or mpg123 or something else), then USE=lame shows up to select one particular implementation over another. but it would still be: USE="mp3 lame" -mike signature.asc Description: This is a digitally signed message part.
Re: [gentoo-dev] New global use flag: vpx or vp8
On 07/31/2010 05:37 AM, Hanno Böck wrote: vpx for supporting googles vp8 codec used in webm. At the moment this is only mplayer and ffmpeg, but it's pretty obvious that apps supporting vp8 will start popping up everywhere (currently working on arista ebuild which will support it). Though we might discuss if vpx is really a good name or it shouldn't be vp8. Depends on the libraries / codecs being used. In this case, the library is libvpx. The codec is VP8. ffmpeg already has native support for playback of VP8, so we'll probably be splitting the use flags into two parts: vp8 and and libvpx. I would say, for most ebuilds, just use vp8 use flag. That will be obvious what it means. For webm support, add a use flag just for that. WebM is a *combination* of VP8 + Vorbis. Strictly speaking though, it's still just Matroska, so support for it will probably be native anyway in most stuff. Steve
Re: [gentoo-dev] New global use flag: vpx or vp8
On 07/31/2010 12:51 PM, Mike Frysinger wrote: On Saturday, July 31, 2010 14:27:14 Jacob Godserv wrote: Honestly not sure what convention is for naming, but I found this recently, and thought I might throw it out there: ~ $ euse -i lame [+ C ] lame - Prefer using LAME libraries for MP3 encoding support While, as a user, I prefer this to be mp3, I also understand there may be more than one library for such-and-so, so I'm willing to read up on USE flags to find out which is the best to use. Overall, I would prefer naming according to the names of the libraries they'll enable. that example isnt relevant. notice how the description includes the word "prefer" and isnt just "enable mp3 support". The description is misleading, and needs to be changed. Just because something has an mp3 and a lame use flag, it does not mean that flipping on lame means that the application will prefer lame over mad or mpg123. Steve
Re: [gentoo-dev] New global use flag: vpx or vp8
On Saturday, July 31, 2010 16:02:51 Steve Dibb wrote: > On 07/31/2010 12:51 PM, Mike Frysinger wrote: > > On Saturday, July 31, 2010 14:27:14 Jacob Godserv wrote: > >> Honestly not sure what convention is for naming, but I found this > >> > >> recently, and thought I might throw it out there: > >> ~ $ euse -i lame > >> > >> > >> [+ C ] lame - Prefer using LAME libraries for MP3 encoding support > >> > >> > >> While, as a user, I prefer this to be mp3, I also understand there may > >> be more than one library for such-and-so, so I'm willing to read up on > >> USE flags to find out which is the best to use. Overall, I would prefer > >> naming according to the names of the libraries they'll enable. > > > > that example isnt relevant. notice how the description includes the word > > "prefer" and isnt just "enable mp3 support". > > The description is misleading, and needs to be changed. Just because > something has an mp3 and a lame use flag, it does not mean that flipping > on lame means that the application will prefer lame over mad or mpg123. sounds like a bug in the package, or the package metadata.xml needs updating. the current lame desc sounds fine to me. -mike signature.asc Description: This is a digitally signed message part.
Re: [gentoo-dev] New global use flag: vpx or vp8
On 07/31/2010 05:09 PM, "Paweł Hajdan, Jr." wrote: > On 7/31/10 4:37 AM, Hanno Böck wrote: >> vpx for supporting googles vp8 codec used in webm. No, vpx is for using libvpx. >> At the moment this is only mplayer and ffmpeg, but it's pretty obvious that >> apps supporting vp8 will start popping up everywhere (currently working on >> arista ebuild which will support it). > Just verifying: does the vpx USE flag in ffmpeg control the support for > encoding vp8, decoding it, or both? How should www-client/chromium > depend on ffmpeg to make sure it will support vp8? it does trigger the use of libvpx, curreng ffvp8 (decoder) is faster than libvpx, libvpx is used for the encoding side for now. >> Though we might discuss if vpx is really a good name or it shouldn't be vp8. > > It might also be webm. Not sure what's more intuitive for people. Also, > nteresting question would be whether to enable the flag by default an in > which profiles (desktop?). vpx -> you use libvpx vp8 -> you want vp8 as for decoding ffmpeg is already a provider so application using it won't need additional useflag IMHO lu -- Luca Barbato Gentoo/linux http://dev.gentoo.org/~lu_zero
Re: [gentoo-dev] New global use flag: vpx or vp8
On 1 August 2010 01:32, Steve Dibb wrote: [...] > The description is misleading, and needs to be changed. Just because > something has an mp3 and a lame use flag, it does not mean that flipping on > lame means that the application will prefer lame over mad or mpg123. lame (the MP3 encoder) has nothing to do with mad or mpg123 (which are used to decode MP3s) -- Arun Raghavan http://arunraghavan.net/ (Ford_Prefect | Gentoo) & (arunsr | GNOME)
