Python Youtube MP3 Splitter #gistblog #python

__YoutubeMp3DownloadAndSplit.md

Python Youtube MP3 Splitter

A Python program that splits mp3 files from YouTube albums into individual songs.

Dependencies

• Python 2.7+
• ffmpeg

Getting Started

You need to have Python 2.7+ and ffmpeg installed.

Useful links:

• Install FFMPEG on Windows
• How to install FFmpeg on Ubuntu 14.04

Usage

1. Install Python and ffmpeg.

2. Download the album from Youtube as mp3.
   (You could use YouTube-dl or any online service).

youtube-dl --extract-audio --audio-format mp3 --audio-quality 0 <Video-URL>

1. Download application.py

2. Copy the timestamps into a .txt file

3. Run

   python application.py <music file.mp3> <tracklist file.txt>

4. Enjoy!

application.py

import sys
import subprocess

inputfile = sys.argv[1]
codec = '-acodec'

#ffmpeg did not like having '?' in the file name, add any other problematic symbol here.
escape_list = ['?']

def RemoveSymbols(text):
    for symbol in escape_list:
        text = text.replace(symbol, '')
    return text

tracklist = []

class Track:
    def __init__(self, timestamp, name):
        self.timestamp = timestamp
        self.name = name

class ExtractTracks:
    def __init__(self):
        with open(sys.argv[2], "r") as values:
            for value in values:
                name = ""
                timestamp = ""
                #split all by spaces.
                keyVal = value.split(' ')
                #find timestamp
                for word in keyVal:
                    if ':' in word:
                        timestamp = word
                    else:
                        name += word + ' '
                tracklist.append(Track(timestamp, name))

#Initialize
ExtractTracks()


def GenerateSplitCommand(start, end, filename):
    return ['ffmpeg', '-i', inputfile, '-ss', start, '-to', end, '-c', 'copy', filename+'.mp3', '-v', 'error']

def GetVideoEnd():
    ffprobeCommand = [
        'ffprobe',
        '-v',
        'error',
        '-show_entries',
        'format=duration',
        '-of',
        'default=noprint_wrappers=1:nokey=1',
        '-sexagesimal',
        inputfile
    ]
    return subprocess.check_output(ffprobeCommand).strip()

for i in range(0, len(tracklist)):
    name = tracklist[i].name.strip()
    name = RemoveSymbols(name)
    startTime = tracklist[i].timestamp.strip()
    if i != (len(tracklist) - 1):
        endTime = tracklist[i+1].timestamp.strip() #- startTime
    else:
        endTime = GetVideoEnd() #- startTime
    print('---')
    print('Generating ' + name + ' from ' + startTime + ' to ' + endTime)
    print('---')
    command = GenerateSplitCommand(str(startTime), str(endTime), name)
    output = subprocess.check_call(command)

Thank you for supplying this script.

I would like to make 2 modifications.

I would like to manually/explicitly specify the 'end time' to the nearest millisecond (as well as start time), e.g.: 00:04:32.549
The reason for this, to get rid of 'extended pauses' to more quickly transition to the next song.
I use a GUI program to visually analyze where the end pause first occurs, and manually write down said time, rather than using my hearing.

The 2nd modification I'd like to do, is use ogg vorbis for output method
I presume for the function def GenerateSplitCommand(start, end, filename), could have it's return statement changed to:
return ['ffmpeg', '-i', inputfile, '-ss', start, '-to', end, '-c' , 'copy', ________________ filename+'.mp3', '-v', 'error']
return ['ffmpeg', '-i', inputfile, '-ss', start, '-to', end, '-c:a', 'libvorbis', 'b:a', '128k', filename+'.ogg', '-v', 'error']

I'm concerned this may be in conflict with the statement, codec = '-acodec'
According to the ffmpeg document, that refers to the Ac-3 decoder