Re: Playing DASH streams / .mpd files

Hi,

On Wed, Mar 17, 2021 at 10:15:58AM +0100, Reimar Döffinger wrote:
> On 17 March 2021 09:53:22 CET, Dave Woodfall <[email protected]> wrote:
> >On 16/03/21 22:01,
> >Reimar Döffinger <[email protected]> put forth the proposition:
> >> On Sat, Mar 13, 2021 at 06:23:21AM +0000, Dave Woodfall wrote:
> >> > How does one play a DASH stream in mplayer?
> >> >
> >> >https://a.files.bbci.co.uk/media/live/manifesto/audio/simulcast/dash/nonuk/dash_low/aks/bbc_radio_four_extra.mpd
> >> I've not had time to actually test, but I think it should just work
> >> if you link against a separately built FFmpeg instead of MPlayer's
> >> own copy.
> >> The problem is that with the built-in FFmpeg copy we disable the DASH
> >> demuxer because it would create a dependency on libxml2.
> >
> >That would explain why ffplay works then, and why I couldn't get any
> > -lavfdopts or other flags to make mplayer play any streams, although
> >I have very limited knowledge of ffmpeg flags and what they all do.
> >
> >Is there a problem with linking to libxml2?  My copy of (a recent svn
> > + ffmpeg from git) mplayer seems to link to it:
> >
> >ldd =mplayer | grep xml
> >libxml2.so.2 => /usr/lib64/libxml2.so.2 (0x00007f3f32630000)
> 
> Huh, that seems strange.
> It's not a very nice dependency and DASH is fairly rare, so I probably
> would have rather avoided it, though mostly I thought we did not have
> a configure check for libxml2, adding those is always a pain.

Just for information, MPlayer in Debian/Ubuntu (at least one version)
links against libxml2 as well:

    $ /usr/bin/mplayer | head -n1
    MPlayer 1.3.0 (Debian), built with gcc-7 (C) 2000-2016 MPlayer Team
    $ ldd /usr/bin/mplayer | grep xml
            libxml2.so.2 => /usr/lib/x86_64-linux-gnu/libxml2.so.2 (0x00007fe643aa9000)

Thanks,
Erik
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