Free Voice Changer is an user-friendly audio application of AthTek. This means that the player will look different in different browsers. For playing an audio file in HTML, we can do the install. If you use mp3 as file ending, FFmpeg will transcode the audio to mp3, which results in additional compression and further quality loss.Html5 audio player. In that case you can download the file with wget and extract the audio afterwards directly from the downloaded file.īe aware that the audio stream in an mp4 file is most likely aac compressed audio and therefore needs the m4a or mp4 file ending. In some cases ffmpeg might not be able to stream the file from YouTube, which results in choppy audio playback or even a corrupted file. $ ffmpeg -i "" -vn -c:a copy someAudio.m4a That’s why you get all those PID console outputs. You have to add the &signature=SomeSignature to the URL parameter and put the whole URL in double quotes, otherwise bash will interpret the & as concurrent execution command. If you want to save only the audio part you can use ffmpeg with ffmpeg -i -vn -c:a copy If you want to save the video to your harddrive, simply use wget to download it. Now you can copy the URL of the video with the desired quality and paste it to VLC, ffplay, mplayer or whatever media player you like that can play files via http. The output should look something like this: You can call the script with the URL of the YouTube video page, e.g. Streams=($(ffprobe "$url" 2>&1 | grep -i stream)) # construct video URL and output information # replace unicode character & with newline to separate parameters # replace "," with newline so we can filter for parameters # replace ", " with newline so we can find encoded URLs # obtain parameters for construction of video URLs Save the file as “youtubeurlextractor”, make it executable and put it somewhere in your $PATH. You can copy the code and paste it into your favourite editor. The following code block contains a bash script that extracts all video URLs from a YouTube video page and outputs them to standard output. I will also make use of ffprobe, a part of the ffmpeg distibution, to obtain information about the video, e.g. Nevertheless it explains the basic steps to be taken to get to the actual video URLs. The method I will introduce involves some filtering and editing operations on the source code of the according YouTube video page, so it might not work as soon as YouTube changes the structure of their video pages. The reasons I’m writing this article are a) because sometimes you just need the URL, for example to watch a video with a much less ressource consuming player like VLC or ffplay, b) because sometimes you just want to listen to the audio and save up even more ressources by not decoding the video and c) because I can □ I know there are many tools out there that allow you to download videos from YouTube, like the Video Download Helper for Firefox, even online tools that convert the audio to mp3.
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