Chinese Ebook Torrents. Advertisement Explaining the difference between codecs and containers is relatively simple, but hard part is attempting to understand each format. The lines start to get blurred when you realize that most common codecs aren’t exclusive, and can make use of multiple compression technologies in order to get the job done. The blurred line becomes nearly invisible when you start to talk about formats like MPEG-4 which could be classified as a bit of a container and a bit of a codec, but that’s a rather complicated classification that’s best left for another time. So, how do you teach yourself the difference between dozens of codec and container options?

Nov 13, 2012 - But be aware that YouTube will ALWAYS encode your video once it's uploaded, doesn't matter what codec and settings you use. So if you want the theoretically best quality for your uploads, choose a lossless codec for uploading or at least visually lossless. See YouTube as the final output into a. The following specifications provide optimal playback of MPEG-2 and MPEG-4 videos: MPEG-2. Audio codec: MPEG Layer II or Dolby AC-3. Audio bitrate: 128 kbps or better. Video codec: H.264. Audio codec: AAC. Audio bitrate: 128 kbps or better.

There is only a handful of technologies that are used for online video, and the bulk of your effort will be spent understanding how these work, as well as understanding the trade-offs you’re faced with when deciding on what to use. You could spend weeks studying technologies that are only used for a relatively small number of applications, so instead we’re going to focus our attention on what technologies you’ll use for most of your video encoding and playback needs.

What Is a Codec? A codec – or coder/decoder – is an encoding tool that processes video and stores it in a stream of bytes. Codecs use algorithms to effectively shrink the size of the audio or video file, and then decompress it when needed. There are dozens of different types of codecs, and each uses a different technology in order to encode and shrink your video file for the intended application. Depending on the codec, this encoding occurs in one of two ways: File compression is at the core of how the modern web works, one could argue, because it allows us to share files that would otherwise take too long to transfer. But how does it work?

Lossy Compression When looking for manageable file sizes, lossy compression is the most viable method available. While you certainly lose quality in audio, video, or both, the compression is a necessary evil (currently) in a world dominated by the need to share and store what would otherwise amount to impractical file sizes. Your average Blu-ray, for example, can exceed 40 gigabytes, and that sort of storage space would not only be expensive, but it’d make digital downloads and purchases inconvenient, if not an outright waste of time. The key when using lossy compression is to settle on the highest quality compression format for your intended use, so that you walk the fine line between loss of quality, and file size.

Lossless Compression Lossless compression works much like a ZIP or RAR file in that after compressing and decompressing, the file is essentially the same. Through use of smart algorithms, the file doesn’t lose much quality, but it’s not an efficient way to store large files because there isn’t much compression that actually takes place. In addition, online transmission of large video files uses far too much bandwidth () to make it a viable compression option. Unless you work in the film industry, or in video editing, it’s unlikely you’ll ever share video files in a lossless format (if even then). To put it into perspective, even a 4k television doesn’t contain the resolution needed to display a film shot on a modern camera and delivered without some sort of compression.

In fact, it’s not even close (yet). While We've trawled high and low and found some eye-popping 4K videos that take full advantage of the ridiculous number of pixels at your disposal, for free., it’s not even close to the size of an uncompressed video format. While a Blu-ray film is less than 50 gigabytes (if it has to fit on one disc), the first downloadable 4k movie (available to consumers – trailer below) is a whopping 160 gigabytes! Completely uncompressed 1080p video is a mind-boggling 410 gigabytes per hour, and that doesn’t include the audio file, which could add an additional 7 gigabytes per hour depending on how it was recorded.

All-in-all, these files are all but useless for a consumer market with current technology. Verdena Discografia Free on this page. It’s also important to note that codecs aren’t just for and video files. Fairbot Serial Keygens. Once a file has been encoded using a specific codec, that same codec must be used to decode the file in order for it to play on your device.