Re: [gentoo-user] libav and ffmpeg on the same computer issue once again

[gevisz <gevisz@gmail.com>]

2015-05-16 9:44 GMT+03:00 Alan McKinnon <alan.mckinnon@gmail.com>:
> On 16/05/2015 07:52, gevisz wrote:
>> 2015-05-15 20:30 GMT+03:00 Alexander Kapshuk <alexander.kapshuk@gmail.com>:
>>> On Fri, May 15, 2015 at 9:04 AM, Gevisz <gevisz@gmail.com> wrote:
>>>>
>>>> On Fri, 15 May 2015 01:45:35 -0400 Gregory Woodbury <redwolfe@gmail.com>
>>>> wrote:
>>>>
>>>>> I had a similar problem with some packages wanting virtual/ffmpeg  and
>>>>> it wouldn't take the -libav USE flag without adding a keyword for
>>>>> ~amd64 on the virtual.
>>>>> (yes, I am going the opposite way from you, but the cause seem the
>>>>> same -- various USE flags are not yet adjusted in the stable
>>>>> branches.)
>>>>>
>>>>> Perhaps we need to request "stabilization" for some of the newer
>>>>> packages to solve this.
>>>>
>>>> Thank you for confirming that libav USE flag do not work not only for me.
>>>>
>>>> However, it would be interesting to hear what the Gentoo devs think about
>>>> this issue.
>>>
>>> Portage news item No 19 has the answer you're looking for.
>>
>> No, it has not.
>>
>> As I have already written, I have libav USE flag in my /etc/portage/make.conf
>> and still portage wants to merge media-video/ffmpeg
>>
>>>> eselect news read 19
>>>> 2015-04-16-ffmpeg-default
>>>>   Title                     FFmpeg default
>>>>   Author                    Ben de Groot <yngwin@gentoo.org>
>>>>   Posted                    2015-04-16
>>>>   Revision                  1
>>>>
>>>> Since the choice between ffmpeg and libav has been made more
>>>> explicit, there has been a lot of discussion about what the
>>>> default implementation should be. It can be concluded that
>>>> media-video/ffmpeg has wider support, and would be somewhat
>>>> more convenient for most end-users.
>>>>
>>>> For this reason the default implementation has been switched
>>>> back from media-video/libav to media-video/ffmpeg by removing
>>>> the libav useflag from the base profile.
>>>>
>>>> If the libav useflag is already globally enabled or disabled
>>>> in /etc/portage/make.conf, then no further action is required.
>>>>
>>>> Users who implicitly relied on libav being enabled in their
>>>> profile, and who wish to continue using libav, should enable
>>>> USE=libav in their /etc/portage/make.conf file.
>>
>> P.S. Trying to find out which packages currently depend on ffmpeg,
>>        I get the following:
>>
>> $ equery depends ffmpeg
>>  * These packages depend on ffmpeg:
>> app-misc/tracker-1.2.5 (ffmpeg ? >=virtual/ffmpeg-9)
>> media-libs/gegl-0.2.0-r2 (!libav ? media-video/ffmpeg:0)
>> media-plugins/alsa-plugins-1.0.28 (ffmpeg ?
>> virtual/ffmpeg[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?])
>> media-plugins/gst-plugins-ffmpeg-0.10.13_p201211-r3 (!libav ?
>>> =media-video/ffmpeg-1.2.6-r1:0[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?])
>> media-plugins/gst-plugins-libav-1.2.4-r1 (!libav ?
>>> =media-video/ffmpeg-1.2.6-r1:0[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?])
>> media-sound/sox-14.4.1 (ffmpeg ? >=virtual/ffmpeg-0.9)
>> media-video/vlc-2.1.5-r1 (!libav ? media-video/ffmpeg:0)
>>                          (!libav ? >=media-video/ffmpeg-1.2:0)
>>                          (!libav ? media-video/ffmpeg:0[vaapi])
>> virtual/ffmpeg-9-r1
>> (>=media-video/ffmpeg-1.2.6-r1:0[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?,X?,encode?,gsm?,jpeg2k?,mp3?,opus?,sdl?,speex?,theora?,threads?,truetype?,vaapi?,vdpau?,x264?])
>>
>> Interestingly enouth, when I try to find out why the tracker package
>> needs ffmpeg,
>> I get the following:
>>
>> $ equery uses tracker
>> [ Legend : U - final flag setting for installation]
>> [        : I - package is installed with flag     ]
>> [ Colors : set, unset                             ]
>>  * Found these USE flags for app-misc/tracker-1.2.5:
>>  U I
>>  - - cue               : Enable cue sheet parsing
>>  + + exif              : Add support for reading EXIF headers from
>> JPEG and TIFF images
>>  - - ffmpeg            : Enable ffmpeg/libav-based audio/video codec support
>>  - - firefox-bookmarks : Install bookmark data miner plugin for
>> www-client/firefox and www-client/firefox-bin
>>  + + flac              : Add support for FLAC: Free Lossless Audio Codec
>>  + + gif               : Add GIF image support
>>  - - gsf               : Enable gnome-extra/libgsf based data
>> extractor and for ODT.
>>  + + gstreamer         : Add support for media-libs/gstreamer (Streaming media)
>>  + + gtk               : Add support for x11-libs/gtk+ (The GIMP Toolkit)
>>  - - iptc              : Enable extraction of IPTC data from pictures
>>  + + iso               : Enable extraction of metadata from ISO disk images
>>  + + jpeg              : Add JPEG image support
>>  + + miner-fs          : Enable tracker-miner-fs (required for
>> filesystem indexing)
>>  + + mp3               : Add support for reading mp3 files
>>  + + nautilus          : Enable tracker to integrate with
>> gnome-base/nautilus by providing entries in its context menu
>>  - - networkmanager    : Enable net-misc/networkmanager support
>>  + + pdf               : Add general support for PDF (Portable
>> Document Format), this replaces the pdflib and cpdflib flags
>>  - - playlist          : Add support for playlists
>>  - - rss               : Enable support for RSS feeds
>>  - - test              : Workaround to pull in packages needed to run
>> with FEATURES=test. Portage-2.1.2 handles this internally, so don't
>> set it in
>>                          make.conf/package.use anymore
>>  - - thunderbird       : Install email data miner plugin for
>> mail-client/thunderbird and mail-client/thunderbird-bin
>>  + + tiff              : Add support for the TIFF image format
>>  - - upnp-av           : Enable UPnP audio/video streaming support
>>  + + upower            : Enable power management support
>>  + + vorbis            : Add support for the OggVorbis audio codec
>>  + + xml               : Add support for XML files
>>  - - xmp               : Enable support for Extensible Metadata
>> Platform (Adobe XMP)
>>  - - xps               : Add support for XPS file format through
>> app-text/libgxps.
>>
>>
>> That, in my view, means that the tracker package really should not
>> demand ffmpeg.
>>
>
>
> Just checking something.
>
> app-misc/tracker does NOT depends on ffmpeg. It depends on
> virtual/ffmpeg, which libav satisfies. I think you are chasing a red
> haerring with that one.
>
> Did you notice?

Yes, you are right about the tracker package.

However, portage wants to emerge media-video/ffmpeg-2.2.14 and

$ equery depends media-video/ffmpeg-2.2.14
 * These packages depend on media-video/ffmpeg-2.2.14:
media-libs/gegl-0.2.0-r2 (!libav ? media-video/ffmpeg:0)
media-plugins/gst-plugins-ffmpeg-0.10.13_p201211-r3 (!libav ?
>=media-video/ffmpeg-1.2.6-r1:0[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?])
media-plugins/gst-plugins-libav-1.2.4-r1 (!libav ?
>=media-video/ffmpeg-1.2.6-r1:0[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?])
media-video/vlc-2.1.5-r1 (!libav ? media-video/ffmpeg:0)
                         (!libav ? >=media-video/ffmpeg-1.2:0)
                         (!libav ? media-video/ffmpeg:0[vaapi])
virtual/ffmpeg-9-r1
(>=media-video/ffmpeg-1.2.6-r1:0[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,abi_ppc_32(-)?,abi_ppc_64(-)?,abi_s390_32(-)?,abi_s390_64(-)?,X?,encode?,gsm?,jpeg2k?,mp3?,opus?,sdl?,speex?,theora?,threads?,truetype?,vaapi?,vdpau?,x264?])

So, more general questions remain relevant.

P.S. I guess that the situation has something to do with the fact
       that I have a multilib profile (on amd64) and have chosen
       to enable  abi_x86_32 on per package base.

       Probably, after portage-tree update, portage cannot find the
       needed x86_32 libraries and decides to emerge media-video/ffmpeg
       instead.

       So, if I get no better suggestions, I will enable abi_x86_32 globally
       and try to update the world once more.

       If that will not work, I will remove the libav USE flag from
       /etc/portage/make.conf and try to update the world for the last time.

       Will report about the results later.