Youtube-dl wrapper which asks for format before downloading, uses simultaneous connections and more.

getVideo.sh

#!/usr/bin/env bash

# /----------------------------------------------------------------------------\
# |                                getVideo b2                                 |
# |       (C) krzysiu.net 2016, multilicensed as MIT, LGPL and CC BY 4.0       |
# | Requires:                                                                  |
# |  * youtube-dl                                                              |
# |  * aria2c                                                                  |
# |                                                                            |
# | Installation:                                                              |
# |  1) Save script body to getVideo                                           |
# |  2) Go to the directory of the script and enter:                           |
# |       chmod +x getVideo                                                    |
# |  3) If you don't have requiments, use following commands (nneds sudo):     |
# |       (for youtube-dl)            ./getVideo --installreq ytdl             |
# |       (for aria2c, needs apt-get) ./getVideo --installreq                  |
# |                                                                            |
# | Usage:                                                                     |
# |  ./getVideo [url]                                                          |
# |     url - the URL supported by youtube-dl (video link, playlist etc.)      |
# |                                                                            |
# | Features:                                                                  |
# |  * getVideo.sh first asks for video format and then downloads it           |
# |  * can use simultaneous connections for faster downloading                 |
# |  * automatic youtube-dl update if download fails (you need sudo for that)  |
# |  * you can set default output directory                                    |
# |                                                                            |
# | Aaaand...                                                                  |
# |  * Donations via PayPal are welcome: http://goo.gl/WGwuLM                  |
# |  * To get different audio and video formats, enter format as "video+audio",|
# |    e.g. if 19 is the code of audio and 50 is video format, enter 50+19     |
# |  * I'm not "basher", "bashist" nor "bashovsky" or "bashnick". It could be  |
# |    written better, but it does it's job.                                   |
# |  * It can update youtube-dl only if it wasn't installed via apt-get, which |
# |    shouldn't be used, as apt-get package is rarely updated                 |
# |  * For some things youtube-dl might need ffmpeg                            |
# |                                                                            |
# \----------------------------------------------------------------------------/


# ----USER CONFIG STARTS HERE----
# Max simultaneous connections; 3 is a good value
maxChunks=3 

# Max chunk size, i.e. if minChunkSize is 50M and maxChunks is 3 then 3 chunks
# Will be used for movies bigger than maxChunks*minChunkSize=150M. 110 MB movie
# will use 2 chunks, 70 MB will use 1
minChunkSize="50M" 

# Output directory WITH trailing slash. Leave empty for none
outputDir="/home/krzysiu/filmy/"

# Title prefix and suffix. See youtube-dl manual (-o parameter) for more info. 
# E.g. with titlePrefix "[%(extractor)s %(height)sp] " sets the output filename 
# to something like "[720p YouTube] Some movie title.mp4"
titlePrefix="[%(extractor)s %(height)sp] "
titleSuffix=

# File allocation method. Possible Values: none, prealloc, trunc, falloc.
# Recommended value is "falloc", but it won't work on ext3 (ext4 is fine).
fileAllocMethod="falloc"

# ----USER CONFIG ENDS HERE----

if [[ $1 == --installreq ]]; then
		if [[ $2 == ytdl ]]; then
			sudo curl -L https://yt-dl.org/downloads/latest/youtube-dl -o /usr/local/bin/youtube-dl
			sudo chmod a+rx /usr/local/bin/youtube-dl
		else
			sudo apt-get install aria2c ffmpeg
		fi
	exit
fi

wasUpdated=false

youtube-dl -F $1
if (($? != 0)); then
	read -p "Can't get format list; Try to update Youtube-dl? " -n 1 -r
	if [[ ! $REPLY =~ ^[Yy]$ ]]; then
	    exit 1
	fi
	sudo youtube-dl -U
	if (($? != 0)); then
		echo "Couldn't update Youtube-dl. Aborting"
		exit 2
	fi
	wasUpdated=true
	youtube-dl -F $1
	if (($? != 0)); then
                echo "Update didn't help. Aborting."
                exit 1
        fi
fi

vidFormat=
while [[ $vidFormat == "" ]]; do
        read -p "Which format would you want to get? " vidFormat
        if [[ $vidFormat == "" ]]; then
                echo "You must provide answer; press CTRL+Z to exit"
                echo $vidFormat
        fi
done

youtube-dl -f $vidFormat -o "'$outputDir$titlePrefix%(title)s$titleSuffix.%(ext)s'" --external-downloader aria2c --external-downloader-args "'--min-split-size=$minChunkSize -x $maxChunks -s $maxChunks' --file-allocation=$fileAllocMethod" $1
exit $?