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#!/bin/sh
# Downloads a video from katsomo.fi. The first parameter is the stream
# URL, the optional second parameter is the output file.
#
# Because the main stream is Silverlight, which can't be downloaded,
# get the mobile stream.
if [ "x$1" = "x" ]; then
echo "Expected URL missing" 1>&2
exit 1
fi
OUTPUT_FILE="$2"
if [ "x$OUTPUT_FILE" = "x" ]; then
OUTPUT_FILE="-"
fi
# Convert http://www.katsomo.fi/?progId=xxx URL into mobile site URL
# and parse the stream URL from the HTML.
MOBILE_PAGE=`echo ${1} | sed "s/www/m/"`
STREAM_URL=`curl -A iPhone -L --max-redirs 10 $MOBILE_PAGE 2>/dev/null | grep "video\/mp4" | sed "s/<.*src=\"//" | sed "s/\"\/>//" | sed "s/^ *//g"`
if [ "x$STREAM_URL" = "x" ]; then
echo "Failed to find the stream URL in $MOBILE_PAGE" 1>&2
exit 1
fi
# The STREAM_URL points to an m3u playlist, using avconv to download
# the stream.
if [ "x$OUTPUT_FILE" = "x-" -o -p "$OUTPUT_FILE" ]; then
# Transcode into a streamable format
avconv -y -i "$STREAM_URL" -f flv -vcodec libx264 -acodec libmp3lame -ab 192k -ar 22050 "$OUTPUT_FILE"
else
# Would use -acodec copy, but due to a bug avconv sometimes fails
# with a non-monotonic timestamp error.
avconv -y -i "$STREAM_URL" -vcodec copy -acodec mp2 -ab 128k "$OUTPUT_FILE"
fi
exit $?
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