How to identify video and audio codecs used in an audio file / video ?
It happens to have media files which does not play. The player displays an error, as what it does not have the right codec correct, and must be downloaded, bla bla bla.
But good, all media players do not give the name of the missing codec, and in the case where it would, yet he must know where to find.
How do I know which codec I'm missing ?
The first thing to do is to find the right codec missing. For this, there are several software. I will introduce you to 3, to you to choose from that would be most appropriate to your problem.
GSpot, the quick and efficient solution.
GSpot is a software that allows you to find the audio and video codecs in which your video was encoded. He recognizes among other codecs MPEG-1/2/4, DV1/2, MP4, MP3, H263, H264, FLV, AAC, AC3, DTS… This is a freeware and no installation, which gives some more information such as bitrate, resolution, and the information in the video.
MediaInfo, find and download your codecs with two clicks.
MediaInfo is a software similar to GSpot, except that it displays much more information. So you can easily find codecs and download them directly, since MediaInfo offers a link to download the codecs your file scanned on the internet. You will also be possible to scan a specific folder rather than a file, mass processing is therefore simpler. Not practical ?
AVIcodec, to find codecs mass.
A final software to recover your codecs, AVIcodec. It can analyze a complete, tout comme MediaInfo, and display information on video codecs and analyzed. When a codec is not installed on your PC, it displays a one-way next to his name. One negative point anyway, sometimes it redirects to the codec pack instead of the codec in question.
Another function of the software, which can be useful, is the listing of codecs installed on your PC in a different tab.
Where can I download my codecs ?
I install what I need.
As we saw with the two previous software, You can download the codecs you're missing by clicking on the link provided by the software. But in case you have a page fault, where if you do not simply use these software, you can find codecs on the site Free-Codecs.com.
Ready for anything with the pack.
Good, here I'll present a solution that saves you from entanglements. This tutorial is geared for people who already have basic codecs, and desiring a specific codec. If you have no codec installed on your PC, follow this part of the tutorial, and you can read 3/4 videos without installing codec by codec.
There are indeed codec pack, who possess the key codecs used for video encoding.
You can choose between Nimo Codec Pack, the K-lite Codec Pack, the ACE Mega CodecS Pack, and many others.
The ultimate solution against many problems… VLC !
I know, present it to the end, once all the dirty work is done, is wrong. But the purpose of the tutorial is not to circumvent the problem, but to solve ! So for those who read to the end, and would like to override the search for codecs, you can always use VLC player. This is a media player that requires no codec installed on your PC. So there you are quiet for a while (until a video is not working 
).
excellent work , VLC for which there is an equivalent that is more beautiful call Kantaris
http://www.clubic.com/telecharger-fiche42748-kantaris-media-player.html
in terms of codes there are readers who permetteront you only download missing codecs for playback
http://www.generation-nt.com/telecharger-alshow-lecteur-video-codecs-video-logiciels-gratuits-actualite-861711.html
http://www.clubic.com/telecharger-fiche21309-gom-player.html
Indeed it looks interesting !
Eric Goods, I will update the article this evening by adding