Transcoding to multiple image size

[Dmitriy Novash]

Hi all.

I have many TV streams (Mpeg2) in udp multicast.
I want to have stream in H264+AAC in udp multicast with 3 resolutions: 
1:1 (original),1:2,1:4. Now I do it with 3 processes of gst-launch, but 
for optimization of CPU usage I think I can do it in one process.
After several tries I get 3 videos with 3 resolutions, but i can't get 
audio for all threads, only for one.
I'm using gstreamer 1.00+ version:
$ gst-launch-1.0 --version
gst-launch-1.0 version 1.8.3
GStreamer 1.8.3

My configuration:
|gst-launch-||1.0| |udpsrc uri=udp:||//239.50.50.50:1234 ! queue ! 
tsparse ! queue ! tsdemux name=demux \
demux. ! queue ! mpegvideoparse ! queue ! decodebin ! queue ! 
deinterlace ! \
tee name=tee1 ! queue ! videoscale method=0 ! videorate ! video/x-raw, 
width=640, height=512, framerate=25/1 ! x264enc ! h264parse ! mpegtsmux 
name=muxer alignment=7 \
demux. ! queue !  decodebin ! queue ! audioconvert ! audioresample ! 
queue ! audio/x-raw, rate=48000, channels=1 ! audiorate ! voaacenc 
bitrate=32000 ! queue ! aacparse ! queue ! tee name=tee2 ! queue ! muxer. \
muxer. ! rtpmp2tpay ! udpsink host=127.0.0.1 port=1111 \
tee1. ! queue ! videoscale method=0 ! videorate ! video/x-raw, 
width=320, height=256, framerate=25/1 ! x264enc ! h264parse ! mpegtsmux 
name=muxer1 alignment=7 muxer1. ! rtpmp2tpay ! udpsink host=127.0.0.1 
port=1112 \
tee1. ! queue ! videoscale method=0 ! videorate ! video/x-raw, 
width=160, height=128, framerate=25/1 ! x264enc ! h264parse ! mpegtsmux 
name=muxer2 alignment=7 muxer2. ! rtpmp2tpay ! udpsink host=127.0.0.1 
port=1113|

I can't join mpedtsmux and tee.

So I want to decode video, get 3 copies, each copy scale to some 
resolution, encode, decode + encode audio and join to each copy of 
video, output each copy in udp unicast to some port.

Help, maybe someone have working solution for my task.
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