A wrapper to encode with ffmpeg all video file in the current folder. Ideal for get rid of belly fat around videos. Video are saved in h264 with 1024 long size resolution and mp3 192

ffmpegall.py

#!/usr/bin/env python
# coding=utf-8

import os
import sys
from subprocess import call, Popen, PIPE

VIDEO_EXTENSIONS = {'mov', 'mpeg', 'avi', 'mvk', 'mp4'}


def get_video_size(input_file):
    # ffprobe -v error -of flat=s=_ -select_streams v:0 -show_entries stream=height,width input.mkv
    command = 'ffprobe -v error -of default=noprint_wrappers=1'.split()
    command += ' -show_entries stream_tags=rotate:stream=height,width'.split()
    command += [input_file]
    proc = Popen(command, stdout=PIPE, bufsize=1)
    output = []
    for line in iter(proc.stdout.readline, b''):
        output.append(line)
    proc.communicate()
    details = {}
    for l in output:
        k, v = l.strip().split("=")
        details[k] = v
    print details
    x = int(details['width'])
    y = int(details['height'])
    if details.get('TAG:rotate') in ("90", '270'):
        x, y = y, x
    return x, y


def process_folder(folder):
    print "Looking for un-recompressed videos in %s" % folder
    for filename in os.listdir(folder):
        name, ext = os.path.splitext(filename)
        if ext:
            ext = ext[1:]  # get rid of the initial dot
        if name.startswith('old-'):
            continue
        if ext.lower() in VIDEO_EXTENSIONS and "recompressed" not in name:
            print "Recompressing %s" % filename
            input_file = os.path.join(folder, filename)
            videox, videoy = get_video_size(input_file)
            command = ['ffmpeg', "-i", input_file]
            command += "-loglevel panic -hide_banner -stats".split()
            command += "-c:v libx264 -crf 28 -c:a mp3 -strict experimental -b:a 192k".split()
            if videox > videoy:
                print "horizonal video"
                command += "-vf scale=1024:-1".split()
            else:
                print "vertical video"
                command += "-vf scale=-1:1024".split()
            target_name = name + ".recompressed.mp4"
            if os.path.isfile(os.path.join(folder, target_name)):
                print "Target file already exists", target_name
                continue
            temporary_name = 'temp-' + target_name
            temporary_path = os.path.join(folder, temporary_name)
            if os.path.isfile(temporary_path):
                print "Deleting temp file", temporary_name
                os.unlink(temporary_path)

            command += [os.path.join(folder, temporary_name)]

            # Recompress **
            error_code = call(command)

            if not error_code:
                old_sourcename = "old-" + filename
                print "Renaming source as %s" % target_name
                # from temp to the target file
                os.rename(os.path.join(folder, temporary_name), os.path.join(folder, target_name))
                # rename the source file to an old- prefix
                os.rename(input_file, os.path.join(folder, old_sourcename))

            print


if __name__ == '__main__':
    if len(sys.argv) > 1:
        folder = sys.argv[1]
    else:
        folder = os.path.curdir

    process_folder(folder)