I have VDR working in the US with ATSC. Previously I had it working in Europe on Satellite. With VDR I have several Hauppauge VOMP boxes which act as remote front ends. Unfortunetely these do not work with AC-3 audio. Using streamdev and iptv plugins with ffmpeg I want to reencode the ATSC streams to extra channels in VDR in order to watch them on the vomp boxes.

I have this almost working. I can see something on the TV but I get quite a lot of stuttering and breakup of the picture. Audio seems to work, in that I don't get popping. What am I missing?

When the channel is selected, the IPTV plugin calls a script which streams from streamdev the TS stream (using mplayer -dumpstream) which uses a fifo to pipe this into ffmpeg, which writes it to udp, where VDR picks it up again.

The exciting bits of the script are:

mkfifo $fifo mplayer $mplayeropts -cache 8192 "$URL" -dumpstream -dumpfile $fifo

...

${LOG} &

MPID=${!}

ffmpeg.streamdev -v 1 \ -i $fifo -debug 0 \ -f mpegts -vcodec copy \ -acodec ${ACODEC} -ac 2 -ab ${ABITRATE}k -ar 48000 -async $fr \ "udp://127.0.0.1:${PORT}?pkt_size=16356" &

acodec is mp2 abitrate is 192 fr is 29 fifo is dynamically creates url is http://myserver:3000/TS/103+1