media

问题 Media Source Extension ( MSE ) needs fragmented mp4 for playback in the browser. 回答1: A fragmented MP4 contains a series of segments which can be requested individually if your server supports byte-range requests. Boxes aka Atoms All MP4 files use an object oriented format that contains boxes aka atoms. You can view a representation of the boxes in your MP4 using an online tool such as MP4 Parser or if you're using Windows, MP4 Explorer. Let's compare a normal MP4 with one that is fragmented:

问题 I would like to learn how to use soundpool method. I would like you to show me a very simple example that run 2 sounds. 回答1: Create a folder named as raw under your_app/res/ . Then paste your ringtone in this folder, for example your_app/res/ringtone.mp3 . Now use the following code: SoundPool soundPool = new SoundPool(5, AudioManager.STREAM_MUSIC, 0); int soundId = soundPool.load(context, R.raw.ringtone, 1); // soundId for reuse later on soundPool.play(soundId, 1, 1, 0, 0, 1); Be sure to

问题 I use the <p:media> to display static PDF content. <p:media value=\"/resource/test.pdf\" width=\"100%\" height=\"300px\" player=\"pdf\"> </p:media> How can I change it to display dynamic content? 回答1: Like as in <p:graphicImage> , the value attribute can point to a bean property returning StreamedContent . This only requires a special getter method for the reasons which is explained in detail in the following answer on using <p:graphicImage> with a dynamic resource from a database: Display

问题 My app allows a user to save an image to their SD card. But I\'m not sure how to make it appear in the gallery until you unmount and remount the SD card. I have googled for a couple of days with this problem but am not sure how to make it appear automatically. I found this link but I\'m not sure how to use the class. This is what i use to save the file. At the bottom of the try catch block is where I want to scan the sd card for new media. FileOutputStream outStream = null; File file = new

问题 What code can I use to make a particular div show only if on a mobile width? I have a 100% width full div at the top of my screen, would like it to only show when the device is specified as a mobile width. 回答1: I'm not sure, what you mean as the 'mobile width'. But in each case, the CSS @media can be used for hiding elements in the screen width basis. See some example: <div id="my-content"></div> ...and: @media screen and (min-width: 0px) and (max-width: 400px) { #my-content { display: block;

问题 Am attempting to implement, for lack of a different description, an offline media context. The concept is to create 1 second Blob s of recorded media, with the ability to Play the 1 second Blobs independently at an HTMLMediaElement Play the full media resource from concatenated Blob s The issue is that once the Blob s are concatenated the media resource does not play at HTMLMedia element using either a Blob URL or MediaSource . The created Blob URL only plays 1 second of the concatenated Blob

问题 I want to change my web page CSS for web browsers running on cell phones, like the iPhone and Android. I\'ve tried something like this in the CSS file: @media handheld { body { color: red; } } But it doesn\'t seem to have any effect, at least on the iPhone. How can I write my CSS to work differently on the iPhone etc, ideally without using javascript? 回答1: You can use @media queries: <link rel="stylesheet" href="path/to/iphone.css" media="only screen and (max-device-width:480px)"/> This

问题 I\'m trying to upload an image via the Django admin and then view that image either in a page on the frontend or just via a URL. Note this is all on my local machine. My settings are as follows: MEDIA_ROOT = \'/home/dan/mysite/media/\' MEDIA_URL = \'/media/\' I have set the upload_to parameter to \'images\' and the file has been correctly uploaded to the directory: \'/home/dan/mysite/media/images/myimage.png\' However, when I try to access the image at the following URL: http://127.0.0.1:8000