[Mplayer-dvb] a/v sync mencoder with *.vdr files

[Martin Hoffmann]

I have tested some more:

Windows Media Player does not play the Divx4/mp3VBR Files from mencoder
correctly - or to be precise after fast forward/backward it's completely out
of sync :-( But who cares ;-) Maybe with another mp3 decoder filter it would
...

But there is a windows player named PowerDivX NextGen - this one plays the
files in sync ! And even the ones created with mencoder, which i formerly
reported to be out of sync are in sync there !
This leads me to thinking that the syncing method of mencoder is totally
okay !
But the playback of the divx files through the dvbs hardware introduces the
sync issues !? (Never thought of that!)
Strange that in case it's definitively out of sync the A-V is alway around
+-0 ! So basically mplayer did sync the output (or at least he thinks he
did) - so i think the problem must be in the card/driver buffering of the
dvbs card ?

What do you think ?

I hope this can help to analyze this !

Martin.

----- Original Message -----
From: "Martin Hoffmann" <ma.hoff at t-online.de>
To: <mplayer-dvb at mplayer.dev.hu>
Sent: Tuesday, November 27, 2001 9:01 PM
Subject: Re: [Mplayer-dvb] a/v sync mencoder with *.vdr files


> Now it's on its way !
> It's around 400 MB 001.VDR Recording of StarWars Episode 6
> For sync issues you should check time index ~320 (c3po knocking on door)
and
> maybe ~916 (thermal detonator activation, and some guys speaking in
foreign
> language, sometimes you can watch for lipsync - for Jabba i guess you
cannot
> tell :-))
> It will at least take 7-8 hours from now on, because i can only send with
> 128kbit :-(
>
> Ah  ! Its found in /MPlayer/incoming/mho_avsync/new/001.vdr
>
> Do you need some additional information, or a file encoded by me ?
>
> Martin.
> ----- Original Message -----
> From: "Martin Hoffmann" <ma.hoff at t-online.de>
> To: <mplayer-dvb at mplayer.dev.hu>
> Sent: Monday, November 26, 2001 9:34 PM
> Subject: Re: [Mplayer-dvb] a/v sync mencoder with *.vdr files
>
>
> > > > i'm experiencing serious A/V sync problems with mencoder while
> encoding
> > vdr recordings :-/
> > > > Don't get me wrong, most are okay, but some are terrible out of sync
> (up
> > to half a second i guess - quite noticable)
> > > Strange. I didn't etsted lot with VDR files yet. Could you upload such
> > .vdr
> > > file which triggers this effect in mencoder?
> > I'll do this (around 400 MB i guess) as soon as my VDR Box is
reconnected
> to
> > my network ... Hopefully tomorrow - but thats another story!
> >
> > > > Is it only synced at the beginning until it's supposed to be in sync
?
> > Or is mencoder checking the PTS for every A / V packet and syncing
> > > > accordingly ?
> > > it uses PTS and sync timers, as you can see in status line of
mencoder.
> > > it can be disabled with -mc 0 option. maybe you disabled?
> > No.
> >
> > > > AFAIK some DVBs recordings have this problem - i'm unsure why, but
it
> > seems that it's already broadcasted this way ...
> > > maybe the vdr files are bad? did you try to playback these vdr files
wit
> > > mplayer? did they have good a-v sync?
> > I played thim with the -vc mpegpes switch through the DVBs Hardware and
it
> > wasn't in sync, too :-(
> > But playing them in VDR ist just fine - the same if converting them with
> > PVAstruento (a tool for Demuxing DVBs recording and taking care of the
a/v
> > sync according to the PTS info) and playing in WMP
> >
> > > > Unfortunately the file is more than 1 GB - so it's rather impossible
> to
> > upload it to check it out for you :-( !?
> > > no problem at our side. we have >2gb free space at incoming wih 10mbit
> > net.
> > cut something off - see above!
> >
> > Martin
> >
> > _______________________________________________
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> > Mplayer-dvb at mplayerhq.hu
> > http://mplayerhq.hu/mailman/listinfo/mplayer-dvb
>
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