#!/bin/bash

foo="-iname '*.flv' , -iname '*.webm'"

bar () {
        find $1 -type f \( $foo \) | while read filename; do
                echo $filename
        done;
}

zar () {
        find $1 -type f \( -iname '*.flv' , -iname '*.webm' \) | while read filename; do
                echo $filename
        done;
}

#bar $1
zar $1
~