[coherence-dev] .config transcoding for sony bravia

[Alexander E. Patrakov]

26.01.2010 04:11, Thomas Hecker пишет:
> Hi all,
>
> could anyone send a working .config file with video transcoding for a
> sony bravia tv to me?
>    

There is no such thing. First, different Sony Bravia TVs can do 
different things. For the 4500 series, you can stream only mp3 music and 
jpeg photos, and transcoding isn't needed. For the 5500 series, you can, 
in addition, transcode videos to MPEG-PS format. However, out of the 
box, Coherence supports only MPEG-TS format as a video transcoding 
target. So you have to modify the source. Find the pipeline in the 
MP2TSTranscode class and replace it with the following:

self.pipeline = gst.parse_launch(
               "mplex format=3 vbr=true mux-bitrate=15360 bufsize=1024
  name=mux %s ! decodebin2 name=d ! ffmpegcolorspace ! mpeg2enc format=3
  bitrate=10000 constraints=false bufsize=1024 reduction-4x4=4
  reduction-2x2=4 ! mux. d. ! queue ! audioconvert ! twolame ! mux."  %
  self.uri)

Warning - this is suitable only for short video clips, not long films, 
because Coherence attempts to transcode the entire clip to RAM. Probably 
this is because of the incorrectly-placed "queue" elements.

This also relies on the "mplex" and "mpeg2enc" gstreamer elements that 
require mjpegtools and are not available by default in the Linux distros.

-- 
Alexander E. Patrakov