[vlc-devel] receiving HVDTS MPEG2 strams: UDP makes artifacts, RTP is OK.

[Marian Ďurkovič]

Hi Claudio,

On Mon, 14 Dec 2009 16:58:49 +0100 (CET), Claudio Allocchio wrote
> Hello all again,
> 
> there is an issue when using VLC (any version) to receive an MPEG2 
> stream generated by HDVTS http://www.sfc.wide.ad.jp/DVTS/ both in 
> UNICAST and MULTICAST mode.
> 
> Even if HDVTS generates a stream which UDP should be able to handle 
> correctly, VLC cannot display correctly the video, generating lots of 
> artifacts.
> 
> If you tell VLC to use RTP instead for receiving the HDVTS generated 
> stream, the all if OK.

  this is most probably due to packet reordering happening somewhere on the path
between the server and you. 10G interfaces on Juniper M160 routers are famous
for this.

  With RTP headers, the sequence number field allows the receiver to restore
correct packet order - but with UDP you're lost.


    With kind regards,

          M.

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