I have search and found multiple question about it but every time when I try these responses I always download only one file or an alias.
I try a code to make download file (.h264 and .json), it seems work for some people:
- Download multiple files with a single action 
- How can I let a user download multiple files when a button is clicked?
My last try is that:
function(uri, data, name) {
    let link = document.createElement("a");
    link.download = name;
    link.href = 'data:'+data+';charset=utf-8;base64,'+uri;
    link.target = "blank_";
    document.body.appendChild(link);
    link.click();
    document.body.removeChild(link);
  }
uri is the data of my file get before with axios.
data is the mime type.
This function is used here:
ListPath.forEach(path => {
    axios.all([axios.get(path+".h264"), axios.get(path+".json")]).then((data) => {
        console.log(data[0], data[1]);
        Utils.downloadFile(data[0].data, 'video/H264', "movie.h264");
        Utils.downloadFile(data[1].data, 'application/JSON', "data.json");
      }).catch(error => console.log(error))
})
And when I click to download one thing (one h264 and his json associated) it try to download only json and failed ("Network error") and redirect to about:blank. If I put in comment the json line it download nothing but redirect too.
I have also tried the method with window.open(), so code like this:
ListPath.forEach(path => {
    window.open(path+".h264", '_blank');
    window.open(path+".json", '_blank');
})
Here the h264 video is download, but it only give an alias of the real link (Like if we download our file on http://mywebsite.com/data.json and in the file it give one line with http://mywebsite.com/data.json) and for the json it was only display on other tab.
I'm using chrome under macOS for testing.
I've also try the js-download-file npm module but is the same issue than before.
