FLV – ne abbiamo parlato in precedenza in relazione con youtube e megavideo, e il formato video di Macromedia Flash e per essere riprodotto sul PC questo deve aver installato un riproduttore tipo FLV Player. Adesso che abbiamo un’idea sui vari codec, formati e riproduttori annessi possiamo introdurre K-Lite Codec Pack (freeware).
K-Lite Codec Pack e un pacchetto completo di codec per poter visualizzare ed ascoltare sul proprio PC qualsiasi video o brano musicale.
Un altro software gratuito, davvero favoloso, e VideoLAN VLC, da scaricare assolutamente insieme al pacchetto dei codec visto poco fa. Pablo su Assemblare PC fai da te: compatibilita e scelta componentiRoberto su Wellbid, strategie, suggerimenti, guida. Questo sito e i servizi pubblicitari qui presenti utilizzano i cookies per offrire le migliori prestazioni. 10 Sep 2011 Perian is a free QuickTime component that ads support for numerous file types as well as numerous video and audio codecs. Whenever we install a fresh copy of Windows, limited codec support often ruin the initial media playback experience. By default, when you try playing a media file such as MKV using Windows Media Player, the application gives an error about unrecognized extension or unsupported codecs, the latter being the issue most frequently. After installing the codecs, Windows Media Player and most third-party applications will be capable of playing all major audio and video file formats including AMR, MPC, DIVX, APE, MKA, EVO, FLV, FLAC, M4B, MKV, XVID, OGG, RWVB, OGM and OGV. Overall, Windows 8 Codecs is a must-have applications for those looking for a flawless media playback experience on their upgraded or new Windows 8 machine. I asked to make sure you weren’t trying to install it on Windows RT, as that version of the OS is also commonly being referred to as Windows 8 by many non-techie people. AddictiveTips is a tech blog focused on helping users find simple solutions to their everyday problems. Warning: Parts of this page require the use of scripts, which your browser does not currently allow.
Over the next several months, visitors to this website will find our series of articles about multichannel audio, also known as surround sound audio. Mike Sokol is a live and recording audio engineer with more than three decades of experience in the music field.
Audio professionals working in commercial and project studios who will look to the Windows Media Audio 9 codec as a means to streamline workflow and help to make audio files more secure by using digital rights management (DRM). Working musicians who can use their existing production tools, such as Steinberg Nuendo 2.0, Digidesign Pro Tools and others, as well as freely available tools such as Microsoft Windows Media Encoder 9 Series to efficiently transfer compressed audio files of works in progress to other band members. Hard-core music fans who can use the Windows Media Audio 9 codec and these articles to set up a listening system that enables them to appreciate true multichannel audio playback.
Those individuals who are already involved with multichannel audio will find additional helpful techniques on how to properly outfit their studios and calibrate the components for quality surround sound playback.
As we progress in this series, you can expect to understand Windows Media Audio 9 Professional system requirements, sound cards, playback systems, additional multichannel distribution methods (for example,: Digital Theater Systems , Dolby Digital AC3, SRS Circle Surround, DVD-A, SACD, MP4) and the differences among them, and much more.
Let's begin by discussing exactly what multichannel audio is, and how you can create, shape, and play it back all from your computer. The drive behind the original multichannel movement came from the film industry, where surround audio is more than 50 years old, having started with a mouse named Mickey in a movie named Fantasia. Like many great ideas before their time, surround sound just wasn't easily available to consumers in their homes as soon as it could be produced by the professional industry. What made surround sound for the home possible was a new technology called a multichannel codec. The speakers are labeled L for Left Front, C for Center Front, R for Right Front, Ls for Left surround, Rs for Right surround, and LFE for the subwoofer.
You can then store this file on your hard disk or copy it to some removable media such as a CD-R or USB RAM card. A secondary function of the Windows Media Audio codec is to reduce the bandwidth needed to carry six or more channels of Pulse Code Modulation (PCM) audio, which streams out at 1.5 megabits per second (Mbps) per channel, down to a manageable size. The second aspect of audio compression is the audio resolution, that is, the frequency at which audio is sampled as it is converted from analog to digital format, and the number of bits it uses at each sample time. Now that you are familiar with codecs, a few definitions about compression types are in order. Lossless compression is what occurs every time you use a file compression program such as PKWARE PKZIP to reduce the size of a database file.
We generally talk about this compression in ratios so that, for instance, a 2:1 compressed file becomes one-half its original size.
Because impact noise clouds our ear for a few milliseconds, the codec can eliminate some complex musical data after every transient. On the decoding or playback side of the compression, the codec then estimates what must have happened originally during compression and expands the audio file back to its original size. The Windows Media Audio 9 Professional codec can reduce 5.1 surround sound data rates to as low as 128 Kbps. The next article in this series will get you up and listening to surround sound that is encoded with the Windows Media Audio 9 codec rather quickly so you'll have something with which to test your encoded audio.
So it’s not so long one day you decide to know what are the various audio and video codecs installed in your PC. Il DivX e uno dei codec piu famosi per comprimere filmati in spazi minori senza alterarne la qualita video, ma scaricarsi questo codec non e certo sufficiente per tutti i tipi di formato video che circolano in rete. Tali informazioni potrebbero essere utili per consentire a un addetto al supporto tecnico di risolvere i problemi relativi al computer.

Quindi se vi ritrovate un video avi che non viene riprodotto nel vostro lettore tradizionale significa che vi manca uno dei codec citati prima, Xvid o DivX. Quella che consigliamo e la versione Full, che contiene tutti i codec conosciuti ed e completa di tutti gli encoder. VLC media player e un ottimo multimedia player che riproduce vari formati audio e video formats (MPEG, MPEG-2, MPEG-4, DivX, mp3, ogg, …) anche DVDs, VCDs, e vari streaming protocols. Supported file WavPack is a completely open audio compression format providing lossless, high-quality This ensures that WavPack encoders and decoders will remain open and royalty-free. The limited number of codecs out of the box has always been a major set back in Windows Media Player and apparently, the story hasn’t quite changed in Windows 8 either.
The downloadable package comes with FFDShow, Lav Filters, Haali Media Splitter, MPEG-2 Decoder (used by Media Player Classic), and VSFilter.
We gave Windows Media Player a shot after installing Windows 8 Codecs, and faced no problem whatsoever in playing the supported file types. Just because Windows RT does not have Windows Media Player doesn’t mean no one can think of installing a codec pack on it.
We review the best desktop, mobile and web apps and services out there, in addition to useful tips and guides for Windows, Mac, Linux, Android, iOS and Windows Phone. Our goal is to deliver articles that will educate and instruct our readers about the technology and equipment used for multichannel audio and to demonstrate how anyone can get involved with it. The company has conducted nearly 300 surround sound seminars and is the leading provider of audio seminars in the United States. He has authored more than 1,200 articles for numerous pro-audio magazines over the last 20 years and has published a book on acoustic instrument sound reinforcement. No matter how useful a tool the Windows Media Audio 9 codec might be, its effectiveness would be minimized if the basic recording and playback system were improperly set up and calibrated.
Those new to the game will find detailed information on the necessary components in a surround system, and how the computer is at the heart of that system. Ten years ago, the technology became inexpensive enough that home consumers could own a multichannel sound system, the now ubiquitous home-theater system, and surround music was on its way.
In fact, the music industry had a brief dalliance with surround music in the 1970s called Quad, which failed primarily due to a lack of a workable consumer delivery system. Let's say you have six music files designated for various speakers in the listening room, as shown in Figure 1. An encoding application, such as Windows Media Encoder 9 Series, lets you assign these six files to the appropriate speakers through a dialog box on your screen.
When the time comes, you can either e-mail the file to another computer or place it on a Web server so it can be streamed in real time. After all, if a disc could hold only one-third the amount of play time as its stereo capacity, it would be of limited use. With the Windows Media Audio 9 codec, audio is sampled at 44.1 or 48 kilohertz (kHz) using 16 bits, similar to the current CD standard. First, remember this is computer data compression, definitely not the dynamic-range compression we are all used to in the recording studio and on stage.
There are several technologies involved, but the simplest way to think about it is to imagine taking all the extra spaces out of a document and putting the words into one long line. We can extend this same idea of lossless compression to music, but the problem is that most audio files have very few blank spaces to compress. Instead of looking for empty spaces to store extra bits, it works by using a perceptual coding technique. By doing these reductions, as well as looking for related harmonic content and such, a lossy codec can attain data compression rates of 20:1 or more. However, the output file is never exactly the same as the original, as there is some loss in musical fidelity.
We also will show you how to get Microsoft Windows Media Player 9 Series to recognize your files as multichannel. Thankfully, it is not that hard to find it, but you need to have Windows Media Player installed in your computer to follow this procedure.
Che fare allora se ci ritroviamo, ad esempio, un file con estensione .avi ma che pero ci fa sentire solo l’audio sul riproduttore di windows? Perhaps this is the reason most users avoid using Windows Media Player as their default application to play audio video files. The package also installs Media Player Classic along with the codecs.  The app uninstalls all the existing codecs from your machine prior to installing its own codecs to avoid any conflicts. In another life, Hector was a Boston- and New York-based musician and record producer, former executive director of EQ and Gig magazines, and technical editor of Pro Sound News magazine. He also owned a computer integration and repair business for 15 years before joining Fits & Starts Productions LLC as a lead instructor, with more than 250 seminars on surround production techniques taught over the last five years.
In brief, we want to take you on a multichannel ride from start to finish—from capturing music to encoding to mastering to final playback.
However, a three-channel system, such as an LCR (left, center, right) is multichannel as is four-channel LCRS (left, center, right, surround). It wasn't until Dolby Logic, Dolby Digital, and Digital Theater Systems (DTS) audio became widespread in the cinema industry in the late 1980s that the technology trickled down to the home theater surround systems we currently enjoy. This file can then be transported, stored, and played much like any stereo information, but can be decoded back to its original multichannel streams.
After you make the appropriate assignments, you provide a name for the output file, as shown in Figure 2, click OK, and a few minutes later a single file is created from the original six.

On the playback end, the decoder turns the six files back into their original streams and routes them to the appropriate speakers in the listening room. In fact, codecs use a lossy compression method (see the topic "Defining Compression") to reduce the file size (and bandwidth) by a factor of 10:1 or more. The Windows Media Audio 9 codec is able to offer CD quality at data rates from 64 to 192 Kbps, at 16 bits per sample. Of course, some documents have a lot of spaces, and hence wasted space, while other documents have a lot of blank places that can be compressed. That is, a lossy compression algorithm understands how human beings hear things and what parts of the data are important to musical fidelity.
This means you can compress a 20-megabyte (MB) file to a size of 1 MB or less, reducing the download time and bandwidth by a similar factor. This loss can vary from being imperceptible to most listeners at low compression rates (high bandwidth) to quite obvious at very high compression rates (low bandwidth). Then, in future articles, we will jump into a whole series of how-to steps on using Windows Media Player 9 Series to play streams from your server, its down mixing and metadata functions, and much more. Even if you download your favorite media player off the internet, the problem of missing codec can still occur one way or the other. Furthermore, you can mark the codecs that you want to install and unmark the ones you don’t require.
Hector La Torre also is an audio consultant and technical writer for the music and recording industry. The surround encoder with the Windows Media Audio family of codecs can compress audio in excess of 20:1 and still maintain musical fidelity. The Windows Media Audio 9 Professional codec, however, is able to sample audio at a higher sample rate (96 kHz) using 24 bits per sample. The opposite action takes place, that is, the spaces are reinserted into the document, when we decompress a file. However, a few codecs exist that accomplish this feat through a series of folding techniques in which unused bit areas are shared with more complex parts of the song.
For instance, loud musical notes mask our ability to hear softer notes in the same passage. How much fidelity loss occurs is a function of the quality of the codec, the complexity of the music, and how much compression is needed to get the file to a usable size and small enough bandwidth.
At higher data rates (less compression) of 192 Kbps, the Windows Media Audio 9 Professional codec compares favorably in listening tests to other high-resolution multichannel codecs at twice the data rate. If you have recently jumped on to the Windows 8 bandwagon and are looking for a way to install all the required codecs to play almost every audio and video format out there, give Windows 8 Codecs a shot. The next level, 5.1 surround, has three speakers in front of the listener in an LCR setting and two speakers somewhat behind the listener. The Windows Media Audio 9 Professional encoders can achieve data rates as low as 128 kilobits per second (Kbps) (see Figure 3) for 5.1 surround sound audio, which makes the size and bandwidth of a surround sound file on par with a traditional stereo MP3 audio file. This additional sampling information enables the codec to delivery better-than-CD experiences, at far lower data rates than current CDs.
The Windows Media Audio 9 Lossless codec is quite effective at reducing the size of the files in a lossless manner.
So a cymbal crash gets our attention, and we don't hear the acoustic guitar harmonics that happen to be playing at the same time. In addition, when using 5.1 surround sound audio compressed at 384 Kbps with the Windows Media Audio 9 Professional codec, most listeners cannot discern any differences between the compressed music and the original PCM files. It’s an audio and video codec package for Windows 8 that installs most of the popular codec packs in one go, and the installed codecs work with Windows Media Player, Media Center, and third-party media players.
You generally can only accomplish compression rates around 2:1 or so, but upon decompression an exact bit-for-bit duplicate of the original audio file is produced. This allows the codec to eliminate the acoustic guitar for a few milliseconds and save a few thousand bytes of storage with every cymbal crash. The .1 channel is called such because it is about one-tenth the bandwidth of the other channels.
14 Jan 2015 The audio and video elements provide support for playing audio and video media without requiring plug-ins. Video codecs and audio codecs High Definition Audio Codecs Realtek Announces Collaboration with Sound Research Corporation on Realtek Intelligent Audio Amplifiers and DSP Products. Windows will scan and then launch default internet browser, in which a detailed report of the various audio and videos codecs that are installed in your computer.
Kiran Kumar is an Engineer by profession, and loves blogging primarily on Microsoft Windows operating system and also enjoys reviewing software and products. Currently, he is exploring Windows 10 and you will see a lot of articles on know-how about it. When he is not writing for TWP, he enjoys time with his Family, listens to lot of music, enjoys Biking, and occasionally plays racing games on Xbox One.
The Windows Planet is an independent site that is not affiliated with or endorsed by Microsoft. The QT AC3 Codec solves issues that you may have with audio in AVI video files, particularly What're Mac computer supported video and audio formats?

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