[MEncoder-users] Setting 'low delay' flag in MPEG2 video

[Mark Himsley]

Hi Reimar,

On 8 August 2007 12:21:25 +0200 Reimar Döffinger wrote:

> > I want to create some MPEG video which will be played using a hardware
> > video player (actually a broadcast video server).
> >
> > The MPEG needs to conform to Sony IMX 30 standard, which the brief
> > description is 30Mbs I frame only MPEG2. Apparently it is vital that
> > the  'low delay' flag (bit 7 of byte 9 of extension header 0x000001b5
> > type 0x01  - if my Google foo has worked) is set, or the replay port
> > goes into an  indeterminate state.
>
> I will never understand why the movie and broadcast people like
> overpriced and crappy hardware so much...

I think its something to do with service level agreements.

> > Is there a way I can ensure that bit is set when I create my mencoder
> > command? I haven't seen it mentioned in the man page, but I could have
> > missed something.
>
> Try attached patch.

Thanks you, I will.

I'm amazed that 3 extra lines of code do it! I guess this shows how well 
written and organised MPlayer/MEncoder is.

-- 
Mark Himsley