上传视频：http://tinymce.ax-z.cn/general/upload-images.php
tinymce.init({
    selector: '#tinydemo4',
    language:'zh_CN',
    plugins: 'link',
    toolbar: 'link',
    file_picker_callback: function (callback, value, meta) {
        //文件分类
        var filetype='.pdf, .txt, .zip, .rar, .7z, .doc, .docx, .xls, .xlsx, .ppt, .pptx, .mp3, .mp4';
        //后端接收上传文件的地址
        var upurl='/demo/upfile.php';
        //为不同插件指定文件类型及后端地址
        switch(meta.filetype){
            case 'image':
                filetype='.jpg, .jpeg, .png, .gif';
                upurl='upimg.php';
                break;
            case 'media':
                filetype='.mp3, .mp4';
                upurl='upfile.php';
                break;
            case 'file':
            default:
        }
        //模拟出一个input用于添加本地文件
        var input = document.createElement('input');
            input.setAttribute('type', 'file');
            input.setAttribute('accept', filetype);
        input.click();
        input.onchange = function() {
            var file = this.files[0];

            var xhr, formData;
            console.log(file.name);
            xhr = new XMLHttpRequest();
            xhr.withCredentials = false;
            xhr.open('POST', upurl);
            xhr.onload = function() {
                var json;
                if (xhr.status != 200) {
                    failure('HTTP Error: ' + xhr.status);
                    return;
                }
                json = JSON.parse(xhr.responseText);
                if (!json || typeof json.location != 'string') {
                    failure('Invalid JSON: ' + xhr.responseText);
                    return;
                }
                callback(json.location);
            };
            formData = new FormData();
            formData.append('file', file, file.name );
            xhr.send(formData);

            //下方被注释掉的是官方的一个例子
            //放到下面给大家参考
            
            var reader = new FileReader();
            reader.onload = function () {
                // Note: Now we need to register the blob in TinyMCEs image blob
                // registry. In the next release this part hopefully won't be
                // necessary, as we are looking to handle it internally.
                var id = 'blobid' + (new Date()).getTime();
                var blobCache =  tinymce.activeEditor.editorUpload.blobCache;
                var base64 = reader.result.split(',')[1];
                var blobInfo = blobCache.create(id, file, base64);
                blobCache.add(blobInfo);

                // call the callback and populate the Title field with the file name
                callback(blobInfo.blobUri(), { title: file.name });
            };
            reader.readAsDataURL(file);
        };
    },
});

播放不了视频：https://blog.csdn.net/weixin_38727232/article/details/103273886
tinymce.init({
	media_url_resolver: function(data, resolve) {
          try {
            let videoUri = encodeURI(data.url);
           let embedHtml = `<p>
                  <span
                    class="mce-object mce-object-video"
                    data-mce-selected="1"
                    data-mce-object="video"
                    data-mce-p-width="100%"
                    data-mce-p-height="auto"
                    data-mce-p-controls="controls"
                    data-mce-p-controlslist="nodownload"
                    data-mce-p-allowfullscreen="true"
                    data-mce-p-src=${videoUri} >
                    <video src=${data.url} width="100%" height="auto" controls="controls" controlslist="nodownload">
                    </video>
                  </span>
                </p>
                <p style="text-align: left;"></p>`;
            resolve({ html: embedHtml });
          } catch (e) {
            resolve({ html: "" });
          }
        }
})

解决方案：两个合并在一起
tinymce.init({
    selector: '#tinydemo4',
    language:'zh_CN',
    plugins: 'link',
    toolbar: 'link',
    file_picker_callback: function (callback, value, meta) {
        //文件分类
        var filetype='.pdf, .txt, .zip, .rar, .7z, .doc, .docx, .xls, .xlsx, .ppt, .pptx, .mp3, .mp4';
        //后端接收上传文件的地址
        var upurl='/demo/upfile.php';
        //为不同插件指定文件类型及后端地址
        switch(meta.filetype){
            case 'image':
                filetype='.jpg, .jpeg, .png, .gif';
                upurl='upimg.php';
                break;
            case 'media':
                filetype='.mp3, .mp4';
                upurl='upfile.php';
                break;
            case 'file':
            default:
        }
        //模拟出一个input用于添加本地文件
        var input = document.createElement('input');
            input.setAttribute('type', 'file');
            input.setAttribute('accept', filetype);
        input.click();
        input.onchange = function() {
            var file = this.files[0];

            var xhr, formData;
            console.log(file.name);
            xhr = new XMLHttpRequest();
            xhr.withCredentials = false;
            xhr.open('POST', upurl);
            xhr.onload = function() {
                var json;
                if (xhr.status != 200) {
                    failure('HTTP Error: ' + xhr.status);
                    return;
                }
                json = JSON.parse(xhr.responseText);
                if (!json || typeof json.location != 'string') {
                    failure('Invalid JSON: ' + xhr.responseText);
                    return;
                }
                callback(json.location);
            };
            formData = new FormData();
            formData.append('file', file, file.name );
            xhr.send(formData);

            //下方被注释掉的是官方的一个例子
            //放到下面给大家参考
            
            var reader = new FileReader();
            reader.onload = function () {
                // Note: Now we need to register the blob in TinyMCEs image blob
                // registry. In the next release this part hopefully won't be
                // necessary, as we are looking to handle it internally.
                var id = 'blobid' + (new Date()).getTime();
                var blobCache =  tinymce.activeEditor.editorUpload.blobCache;
                var base64 = reader.result.split(',')[1];
                var blobInfo = blobCache.create(id, file, base64);
                blobCache.add(blobInfo);

                // call the callback and populate the Title field with the file name
                callback(blobInfo.blobUri(), { title: file.name });
            };
            reader.readAsDataURL(file);
        };
    },
media_url_resolver: function(data, resolve) {
          try {
            let videoUri = encodeURI(data.url);
           let embedHtml = `<p>
                  <span
                    class="mce-object mce-object-video"
                    data-mce-selected="1"
                    data-mce-object="video"
                    data-mce-p-width="100%"
                    data-mce-p-height="auto"
                    data-mce-p-controls="controls"
                    data-mce-p-controlslist="nodownload"
                    data-mce-p-allowfullscreen="true"
                    data-mce-p-src=${videoUri} >
                    <video src=${data.url} width="100%" height="auto" controls="controls" controlslist="nodownload">
                    </video>
                  </span>
                </p>
                <p style="text-align: left;"></p>`;
            resolve({ html: embedHtml });
          } catch (e) {
            resolve({ html: "" });
          }
        }
});