[MEncoder-users] Opening Local SDP files with mencoder

Ben Barker ben at bbarker.co.uk
Sun Feb 9 19:45:46 CET 2014


Ah OK - is there a way to find out what version of live555 the working
version of mencoder is using so that I can use the correct version?

When I built mencoder I used the latest ffmpeg version, but live555 is
separate from this?




On Sun, Feb 9, 2014 at 6:34 PM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> Ben Barker <ben <at> bbarker.co.uk> writes:
>
> > The reason I was using mencoder was that I found if
> > I joined a multicast stream using a local SDP from ffmpeg,
> > either copying the video (so no transcoding), or
> > transcoding directly, then about 50% of the time the
> > output file could not then be opened again by ffmpeg -
> > complaining of damaged headers, and being able to open it
> > with ffmpeg was important for future processing.
>
> (For transcoding, this sounds impossible to me and if you
> would report this bug, it would be very welcome!)
>
> > Interetsinbgly, that same file that ffmpeg created, then
> > rejected, could reliably always be opened by either VLC
> > or mencoder / mplayer.
>
> Such a sample would be *very* welcome!
>
> > Capturing using mencoder I never had this problem, and ffmpeg
> > could always accept the mencoder output file. Since the
> > underlying libraries are the same in both cases, presumably
> > this is down to some extra checking mencoder is doing that
> > ffmpeg is not...?
>
> The underlying libraries are not the same, if you install an old version of
> live555 on your system and recompile MEncoder, it will use it.
>
> Carl Eugen
>
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