• Compression Techniques

  Decoding x-rtvc1 RTP Streams ?

  Posted by Christian Rheims on December 17, 2011 at 12:04 am

  Hello,

  Does anyone know how to decode the Video Streams from e.g. MSN Messenger 2011 ?

  The new Windows Live Messenger uses rtvc1 as Video Stream. The earlier versions used ml20 as stream.

  I managed to decode all I-Frames of such stream, but i cannot decode the B and P Frames.
  rtvc1 is a VC-1 based Codec, but it has some modifications for the RTP transmission.

  If i decode the I Frames, the Video runs too fast, because there are the B,P frames missing. The B,P frames are in my stream File, but the Decoder of ffmpeg only accepts the I Frames and skippes the B,P frames.

  I hope someone here is interested in decoding this streams, on roundup i´ll got responses from some users, but after a while they dropped the idea of decoding rtvc1 🙁

  Sorry for my bad english

  Greetz Chris

  Zeel Zeel replied 13 years, 9 months ago 2 Members · 2 Replies
• 2 Replies

• 

  Zeel Zeel

  November 19, 2012 at 10:54 am

  i can’t able to decode b,p and sp frame of x-rtvc-1 codec video file..
  so if u have any solution..
  plz give update on this Registered id..zeeltesting402@gmail.com
  regard
  zeelzeel
• 

  Zeel Zeel

  November 19, 2012 at 11:05 am

  when i try to play msn wireshark capture rtvc.vc1 file by removing all cc000000 and dc000000 then using ffmpeg it playing but we getting some error
  1>Luma scaling is not supported, expect wrong picture.
  2>Chroma scaling is not supported, expect wrong picture.
  and video playing so fast.
  so there is some specific decoder or player to play that file.
  note:={i think there is some mac player can able to play but i m not sure..}
  give reply
  on this id zeeltesting402@gmail.com

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