[FFmpeg-user] record a network stream to a seekable file and stream it at the same time

[WILLEMS Emmanuel]

Hi !

I'm trying to record a MP4 rtsp transport stream directly to a seekable file and stream it to youtube at the same time.
I've got the stream and recording working, but the recorded file is not seekable.

I'm using this in a shell script:

 /usr/local/ffmpeg/ffmpeg \
-rtsp_transport tcp -i "rtsp://ip_address/path" -deinterlace \
-map 0  \
-acodec aac -vcodec copy -f tee "[f=flv:onfail=ignore]$FACEBOOK_URL|[f=flv:onfail=ignore]$YOUTUBE_URL/$KEY|somefile.flv"

Anybody with tips and pointers on how to record a network stream directly to a seekable file?
I've tried mkv and flv as output file format but no luck.

Thanks in advance for any help,
Emmanuel
-- 
Emmanuel Willems