Something
public text v1 · immutablefunction vid_length()
{
yecho "Running mencoder "$1" -quiet -ovc copy -oac pcm -o /dev/null | awk '/Video stream/ {print $10}'" >> "$LOG_FILE"
mencoder "$1" -quiet -ovc copy -oac pcm -o /dev/null 2>>"$LOG_FILE" | awk '/Video stream/ {print $10}'
}