[vlc-devel] Re: Is there a way to force PES alignment to a TS boundary when Streaming UDP?

[Derk-Jan Hartman]

Could you please not reply to an existing post when starting a new  
topic?
It is annoying for the message threading of the email clients.

DJ

On 15-mrt-2006, at 1:57, Robert Scheffler wrote:
> Hi,
>
> I would like to stream a MPEG-2 TS using UDP out of VLC, but force  
> the PES
> packets to start at the beginning of a TS packet. Some software or  
> hardware
> encoders call this "PES Alignment". Since the TS is 188 bytes per  
> packet,
> there can be a bit of inefficiency in doing this alignment, but if  
> the TS is
> CBR anyway, the NULL packets are added somewhere, just a matter of  
> forcing
> their location. Essentially I want the PUSI completely inside a  
> single TS
> packet.
>
> The effect of 0.8.4 is that the PES placement is rather random, and  
> drifts
> around since normally the TS is demuxed before analysis. I want to  
> parse and
> analyze the TS without demuxing it, so finding a PUSI that spans TS  
> packet
> boundaries is painful.
>
> This may be a feature of ffmpeg, but I have not checked yet.
>
> Anyone have a suggestion or idea for this?

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