some of my favorite North by Northwest (http://www.imdb.com/title/tt0053125/) shots, cutting and transcoding to webm

cut.sh

#!/usr/bin/env bash

set -o errexit
set -o pipefail
set -o nounset

# https://trac.ffmpeg.org/wiki/Encode/VP8
# https://libav.org/documentation/avconv.html


avconv \
  -i nxnw.mp4 \
  -c:v libvpx \
  -c:a libvorbis \
  -ss 00:38:21 \
  -t 00:00:09 \
  -an \
  -sn \
  -threads $(nproc) \
  -crf 10 \
  -b:v 1M \
  nxnw-1.webm
  
avconv \
  -i nxnw.mp4 \
  -c:v libvpx \
  -c:a libvorbis \
  -ss 01:06:25 \
  -t 00:00:45 \
  -an \
  -sn \
  -threads $(nproc) \
  -crf 10 \
  -b:v \
  1M nxnw-2.webm
  
avconv \
  -i nxnw.mp4 \
  -c:v libvpx \
  -c:a libvorbis \
  -ss 01:46:53 \
  -t 00:00:17 \
  -an \
  -sn \
  -threads $(nproc) \
  -crf 10 \
  -b:v 1M \
  nxnw-3.webm