Where is Audio Only [MP3] option?

[coolguruji]

New issue

Your environment

Please answer these questions when reporting a new issue:

What is your operating system (Windows, Linux, OSX, etc.)? LINUX [Centos] What is your web server (Apache, IIS, etc.)? Apache What version of Alltube are you using? Maybe latest because i installed it today from github How did you install Alltube (with Git or with a release package)? Git What version of PHP are you using? 7.0 What version of Python are you using? Python 2.6.6 What version of youtube-dl are you using? 2018.02.04 Do you get any PHP-related errors in your webserver's logs? No What is the content of your config/config.yml file? File is not there, I can see config.example.html, config_test.yml, config_test_windows.yml Please provide the URL of a video that causes the issue. I can download videos by using this script

Describe your issue

Well, This is first time i tried to install something via composer / yarn and after solving few issues i can see it working and i downloaded a video by using this script. But, I cant see Audio only (MP3) button below the form, WHY?

I installed it to only for that purpose and now i am unhappy. Can you help?

[Rudloff]

Hello, As explained by the FAQ, you need to create the config/config.yml file and add this in it:

convert: true
avconv: path/to/avconv

[coolguruji]

i did and it works now. May i ask you one thing, I hope you'll answer me. how you are converting to mp3 files? I know you'll say ffmpeg but as i can see your script is not saving file on the server. I believe its fetching stream and converting it and giving instant download and dont save it on server. Am i right ?

[Rudloff]

Yes, we are using pipes to convert a video stream and stream directly to the browser without saving it on the server. Basically, we run something like this:

ffmpeg -i 'https://example.com/video' -f mp3 -vn pipe:1

[coolguruji]

Sound Good! This is how you can convert longer videos. I mean duration does not matters? But i believe you are running it inside a shell command as far as i know? Then how can you print / echo the stream data?

    ffmpeg -i 'https://example.com/video' -f mp3 -vn pipe:1

I can set PHP headers like 👍

    header('Content-Description: File Transfer');
    header("Content-Type: audio/mpeg"); 
    header('Content-Type: application/force-download');
    header("Accept-Ranges: bytes");
    header('Content-Transfer-Encoding: binary'); 
    header('Content-disposition: attachment; filename="'.$title.'.mp3"'); 
    header('Connection: Keep-Alive');
    header('Expires: 0');
    header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
    header('Last-Modified: ' . gmdate('D, d M Y H:i:s', time()) . ' GMT');
    header("Cache-Control: private", false);
    header('Pragma: no-cache');
    readfile($mp3path); // pipe data
    exit;

How to put that converted stream data inside php? Can you describe?

[Rudloff]

Yes, this is an efficient way to convert big videos because PHP only handles a small bit of the converted file at a time.

You should have a look at VideoDownload.php to see how we do it.

We are running the command with popen so it returns a stream: https://github.com/Rudloff/alltube/blob/6e0464ebbeee989016e7711b3ec7d27a5f1b5404/classes/VideoDownload.php#L331

Then we can give this stream to Slim which sends it to the browser: https://github.com/Rudloff/alltube/blob/6e0464ebbeee989016e7711b3ec7d27a5f1b5404/controllers/FrontController.php#L227

(Under the hood, Slim reads the stream chunk by chunk with fread.)

[coolguruji]

Hey

You are my hero!

You saved my day. Finally i got what i was looking for from the last 4 days. I was looking for a way to get instant mp3 files without downloading it on my server. And, Your solution is perfect.

Thank you once again.