[MPlayer-users] mplayer SVN plays video too fast on FreeBSD

[Tom Evans]

On Tue, Dec 8, 2009 at 9:28 AM, Tom Evans <tevans.uk at googlemail.com> wrote:
> On Tue, Dec 8, 2009 at 4:02 AM, RC <cooleyr at gmail.com> wrote:
>> On Mon, 7 Dec 2009 14:13:00 +0000
>> Tom Evans <tevans.uk at googlemail.com> wrote:
>>
>>> So, I checked out mplayer trunk, r29977, and made a few changes to
>>> support compilation on FreeBSD (see attached diff). The program built
>>> and compiled successfully, but every file I play through it has the
>>> video processed way too fast.
>>
>> MPlayer syncs based on audio speed, and ao_oss.c is one of the files
>> you've modified...  Hmm.  I would try with some other -ao device to
>> test this, perhaps -ao esd or similar.
>>
>> afm=hwac3 could similarly be a culprit.
>>
>
> Interesting, some things to try tonight. The patch to ao_oss.c is to
> set the sample rate after pausing/resuming, which was breaking ac3
> passthrough on my sound card. I'll play around with the audio options
> some....
>

I've dropped the ao_oss.c patch - it simply sets the right rate on the
receiver after pausing, and my receiver seems to cope just fine with
that anyway, and it is confusing the debugging situation :)

It seems that the problem is with afm=hwac3. Dropping this (and
outputting 2-channel PCM over the SPDIF) results in perfect timing, as
does using '-ao none'. I guess that mplayer examines the capabilities
of the sound device, and that how it does this has changed between the
working version and the svn trunk version. I also guess its time for
me to read some code to work out where and why :)

Cheers

Tom