Renaming a file while downloading

Question

I would like to know how I can change the name of the file in direct link as for example http://meusite.com.br/file/374749482.mp4 so that when the user downloads the file name is sent to the users changing the file name by taking the name in the case of the variable $medias["nome"] putting the format at the end getting $medias["nome"].mp4

Being that my site is in one place and the host of direct links on another server.

Answer 1

Using the download attribute=""

You can use the download attribute in html on a link, for example

<a download="media4.mp4" href="http://meusite.com.br/file/374749482.mp4">Download</a>

If the download is not started by a link, you can create a javascript event:

function download(url, nome) {
    var el = document.createElement("a");
        el.download = nome; //Define o nome
        el.href = url; //Define a url
        el.target = "_blank"; //Força abrir em uma nova janela
        el.className = "hide-link"; //Adiciona uma classe css pra ocultar

    document.body.appendChild(el);

    if (el.fireEvent) {
        el.fireEvent("onclick");//Simula o click pra navegadores com suporte ao fireEvent
    } else {
        //Simula o click
        var evObj = document.createEvent("MouseEvents");
        evObj.initEvent("click", true, false);
        el.dispatchEvent(evObj);
    }

    //Remove o link da página
    setTimeout(function() {
        document.body.removeChild(el);
    }, 100);
}

using:

download("http://meusite.com.br/file/374749482.mp4", "media1.mp4");

css:

.hide-link {
   position: absolute;
   top: -9999px;
   left: -9999px;
}

I didn’t use display: none (or visibility) because I don’t know if it affects the click, and I used -9999px with position: absolute to avoid affecting other elements on the page.

Using . htaccess

If media1.mp4 is the only name you will use and the download is from the static file, you will need . htaccess (acaso use apache).

To "rename" you need the header:

Content-Disposition: attachment; filename=...;

The attachment will force the download and the filename will give the name of the download, then create in the folder /file the file . htaccess and play the following content:

<FilesMatch "\.(?i:mp4)$">
    Header set Content-Disposition "attachment; filename=media1.mp4"
</FilesMatch>

Using php

If the page is generated by PHP, or you need the file name to be dynamic, you will need to use PHP and header, for example:

<?php
$nome    = 'media1.mp4'; //Altere o nome aqui
$arquivo = './file/374749482.mp4'; //Altere o nome aqui

header('Content-Disposition: attachment; filename=' . $nome . ';');
header('Content-Type: video/mp4');
header('Content-Transfer-Encoding: binary');

//É necessário informar o tamanho do arquivo pelo php
header('Content-Length: ' . filesize($arquivo));

$handle = fopen($arquivo, 'rb');

while(false === feof($handle)) {
    echo fgets($handle, 1024);
}

fclose($handle);