250 lines
7.2 KiB
Python
Executable file
250 lines
7.2 KiB
Python
Executable file
#!/usr/bin/env python
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"""
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export-video
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Little scrip to export video file for The Internet :D
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"""
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import sys
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import getopt
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import re
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import os
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import subprocess
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import logging
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logging.basicConfig(format='%(levelname)s:%(message)s', level=logging.DEBUG)
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def usage():
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""" Print usage"""
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print("export-video -i input -o output [-d --desinterlace]")
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params = {
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"desinterlace": False,
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"file_output": "",
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"file_input": "",
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"vbitrate": "600k",
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"abitrate": "96k",
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"h264_vcommand": [
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"-trellis", "0",
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"-me_method", "umh",
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"-subq", "8",
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"-me_range", "16",
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"-bf", "3",
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"-rc_lookahead", "16",
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"-g", "250"
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],
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"h264_acommand": ["-strict", "experimental"],
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"webm_vcommand": [
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"-rc_lookahead", "16",
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"-keyint_min", "0"
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"-g", "250",
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"-skip_threshold", "0",
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"-level", "116"
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],
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"webm_acommand": ["-strict", "experimental"],
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"verbose": True,
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"pattern": "",
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"twopass": False,
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"recursive": False}
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VERSION = "0.1dev"
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def execute(command, shell=False):
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"""
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Execute a system command and return its results.
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Thanxx Strycote from Lutris.net
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"""
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try:
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stdout, stderr = subprocess.Popen(command,
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shell=shell,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE).communicate()
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except OSError as ex:
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logging.error('Could not run command %s: %s', command, ex)
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return
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return stdout.strip()
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def find_executable(exec_name):
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"""
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find executable with which command
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exec_name (string) : executable to find
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"""
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if not exec_name:
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raise ValueError("find_executable: exec_name required")
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return execute(['which', exec_name])
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def list_file(directory, pattern, recursive):
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"""
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list files from a directory
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directory (string) : source directory
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pattern (string) : regex used to found files
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recursive (boolean) : should i serach on sub-folder?
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"""
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logging.info('searching in directory %s', directory)
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files_list = []
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try:
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dirs = os.listdir(directory)
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except OSError:
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logging.error('error : %s not a directory?', directory)
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return
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for i in dirs:
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logging.debug(' working on file / dir %s', i)
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if os.path.isdir(directory + "/" + i) and recursive:
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logging.info('directory found : %s', i)
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files_list.extend(list_file(
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os.path.join(directory, i),
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pattern,
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recursive
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))
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else:
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if re.search(pattern, i) is not None:
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logging.info('file found : %s', i)
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files_list.append(directory + "/" + i)
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return files_list
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def get_file_name(path):
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"""
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find basename without extension
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path (string) : complete path + file
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"""
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return os.path.splitext(os.path.basename(path))[0]
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def process_arg(sysarg):
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"""
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Process arguments
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sysarg (list) : list of arguments
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"""
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try:
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opts, args = getopt.getopt(
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sysarg, "hi:o:dp:a:v:2",
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[
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"help",
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"input=",
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"output=",
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"desinterlace",
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"pattern=",
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"abitrate=",
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"vbitrate=",
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"twopass"
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]
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)
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except getopt.GetoptError:
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usage()
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sys.exit(2)
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for opt, arg in opts:
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if opt in ("-h", "--help"):
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usage()
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sys.exit()
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if opt in ("-o", "--output"):
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params["file_output"] = arg
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if opt in ("-d", "--desinterlace"):
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logging.info("Desinterlace activated")
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params["h264_vcommand"] += ["-vf", "yadif"]
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params["webm_vcommand"] += ["-vf", "yadif"]
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if opt in ("-i", "--input"):
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params["file_input"] = arg
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if opt in ("-p", "--pattern"):
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params["pattern"] = "^\\w*."+arg+"$"
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if opt in ("-a", "--abitrate"):
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params["abitrate"] = arg
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if opt in ("-v", "--vbitrate"):
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params["vbitrate"] = arg
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if opt in ("-2", "--twopass"):
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params["twopass"] = True
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if opt in ("-r", "--recursive"):
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params["recursive"] = True
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def encode_h264(src, dest):
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""" Encode file
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src (string) : source video file
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dest (string) : destination file
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"""
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if params["twopass"]:
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logging.debug("two pass encoding started ...")
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firstpass = [
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EXEC_FFMPEG,
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"-y",
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"-i", src,
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"-codec:va", "libx264",
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"-b:v", params["vbitrate"],
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"-pass", "1",
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] + params["h264_vcommand"] + [
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"-f", "rawvideo",
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"/dev/null"
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]
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secondpass = [
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EXEC_FFMPEG,
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"-i", src,
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"-pass", "2",
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"-codec:v", "libx264",
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"-b:v ", params["vbitrate"]
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] + params["h264_vcommand"] + [
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"-b:a", params["abitrate"]
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] + params["h264_acommand"] + [
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dest+".mp4"
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]
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logging.debug("First Pass command %s", firstpass)
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execute(firstpass)
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logging.debug("Second pass command %s", secondpass)
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execute(secondpass)
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else:
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logging.debug("one pass encoding started ...")
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encode = [
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EXEC_FFMPEG,
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"-i", src,
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"-codec:v", "libx264",
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"-b:v ", params["vbitrate"]
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] + params["h264_vcommand"] + [
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"-b:a", params["abitrate"]
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] + params["h264_acommand"] + [
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dest+".mp4",
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]
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logging.debug(encode)
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execute(encode)
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if __name__ == "__main__":
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EXEC_FFMPEG = find_executable("ffmpeg")
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if not EXEC_FFMPEG:
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print('ffmpeg not found, exiting')
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sys.exit(2)
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process_arg(sys.argv[1:])
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if not params["file_input"]:
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print("you must specify a file / directory input")
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sys.exit(2)
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if os.path.isdir(params["file_input"]):
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if os.path.isfile(params["file_output"]):
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print("Can't batch export to a single file! Bye Bye")
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sys.exit(2)
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logging.info('%s is a directory', params["file_input"])
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video_files = list_file(
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params["file_input"],
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params["pattern"],
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params["recursive"]
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)
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for f in video_files:
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logging.info('batch encode | file %s', f)
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encode_h264(f, os.path.join(
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params["file_output"], get_file_name(f)
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))
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else:
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if os.path.isfile(params["file_input"]):
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if not params["file_output"]:
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params["file_output"] = get_file_name(params["file_input"])
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else:
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if os.path.isdir(params["file_output"]):
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params["file_input"] = os.path.join(
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params["file_input"],
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get_file_name(params["file_input"])
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)
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logging.info('%s is a file', params["file_input"])
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encode_h264(params["file_input"], params["file_output"])
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else:
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logging.info("input file desn't exist, bye bye")
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sys.exit(2)
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sys.exit(0)
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