ffmpeg_web_converter.py

"""
Converts source video files in `sources` to mp4, ogv, and webm 640x360.

Edit `sources` (list of filenames) and adjust `source_dir`, `output_dir`,
and `new_path` as needed.

Reference: http://paulrouget.com/e/converttohtml5video/
"""
import os
import subprocess

sources = (
    'video_one.mov',
    'video_two.mov',
)

source_dir = os.path.dirname(os.path.abspath(__file__))  # Assume same dir as this file
output_dir = os.path.join(source_dir, 'output')  # Assume this dir + 'output/'

def new_path(src, ext):
    return os.path.join(
        output_dir,
        os.path.basename(src).replace('HD.mov', u"640.{0}".format(ext)),
        )

def make_mp4(src):
    new = new_path(src, 'mp4')
    cmd = """ffmpeg -i "{0}" \
        -acodec libfaac -ab 96k \
        -vcodec libx264 -vpre slower -vpre main \
        -level 21 -refs 2 -b 345k -bt 345k \
        -threads 0 -s 640x360 "{1}"
        """.format(src, new)
    subprocess.call(cmd, shell=True)

def make_ogg(src):
    new = new_path(src, 'ogv')
    cmd = """ffmpeg -i "{0}" \
        -acodec libvorbis -ac 2 -ab 96k -ar 44100 \
        -b 345k -s 640x360 "{1}"
        """.format(src, new)
    subprocess.call(cmd, shell=True)

def make_webm(src):
    new = new_path(src, 'webm')
    cmd = """ffmpeg -i "{0}" \
        -acodec libvorbis -ac 2 -ab 96k -ar 44100 \
        -b 345k -s 640x360 "{1}"
        """.format(src, new)
    subprocess.call(cmd, shell=True)


for src in sources:
    src = os.path.join(source_dir, src)
    make_mp4(src)
    make_ogg(src)
    make_webm(src)