Shorthand for "Encoder/Decoder". A codec allows to convert data into a different representation and decode it again. Codecs are mostly used in signal transmission, e.g. for audio/video playback or streaming.

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5
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2answers
8k views

Which Bluetooth Stack supports APT-X on Windows 7

I'm thinking about buying wireless desktop speakers for ease of use with different audio sources (Notebooks, Mobile Phone etc.). For higher audio quality over the standard A2DP protocol there are ...
2
votes
4answers
3k views

How to hardcode subtitles into an AVI without loss of quality

I am using a program to hardcode subs into an AVI file. The problem is that is recompresses the video using a codec. I don't see why this is necessary and causes a noticeable loss of quality. Is there ...
1
vote
0answers
33 views

How to set profile compatibility of an fMP4 using ffmpeg?

I'm using ffmpeg to generate a fragmented mp4 stream that will be consumed by an HTML5 player. I think I have a correctly formatted mp4 stream of data with an empty moov at the start and a series of ...
0
votes
0answers
34 views

How can I change video codecs for Chrome/YouTube?

Today I opened this video which is available in 720p and 1080p at 50 fps. For some reason my laptop can't handle it. I have Core 2 Duo T9300 2.5GHz. Single core performance of this CPU is just 30% ...
1
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0answers
20 views

How do I view an AVI file that requires GTCC codec?

I have pretty much tried every type of decoder package out there (K-lite, CCCP, Satsuki, etc.) but no luck. I used an old webcam back in the early 2000s when recording. Really need to know what this ...
3
votes
1answer
5k views

ffmpeg: Could not find codec parameters for stream 0 (Video: h264) unspecified size

I try to convert a video from .raw to .mp4. For this reason I did download, build and install both x264 and ffmpeg. However, command: ffmpeg -f h264 -i output.raw -vcodec copy output.mp4 fails with ...
1
vote
4answers
1k views

Which has the best codec support: Mplayer or VLC?

So, put everything else asside. Forget the interface, the extra functions, the speed, or whatnot. Which of these two media players supports the largest number of video codecs right out of the box? In ...
2
votes
0answers
37 views

What are the rules for using Dolby codecs in mobile and desktop apps?

I'm developing a video player and can't get a straight answer. VLC on iOS plays Dolby codecs (AC3, EAC3, TrueHD) if the user is not in a US timezone. I didn't check the source code for Android, but it ...
0
votes
1answer
271 views

Windows Media Player Play to - failed to retrieve media information from media server

So, I'm recently having issues playing any sort of mp4 file to my xbox one. Everytime I try, I just get the message "Failed to retrieve media information from media server". I've tried the common ...
3
votes
1answer
126 views

Enabling Microsoft Windows Media player to play Matroska (MKV) container and H.264 codec videos

My understanding of the technical aspects associated with Video files is very basic. Our company developed a Thick-client software product for the commercial market that would allow users to view ...
5
votes
2answers
9k views

Converting AVI encoded file with an IMM5 codec

As part of a legal matter, I received a copy of a security video encoded using what appears to be an 'IMM5' codec, apparently often used by police. I also received a copy of 'BackupPlayer', which can ...
2
votes
0answers
917 views

Best video and audio format for small file size with very unnoticeable quality depreciation [closed]

I need to bring down disk space of my file-sharing website suggest me an audio codec and video codec which works with FFMPEG and can reduce file size with little or no loss in quality . Thanks.
3
votes
1answer
13k views

How to fix choppy sound replay with VLC

I've got a problem with vlc playing some file formats, for example mkv or m2ts (I didn't notice this problem with avi though). The sound plays ok, than dissappears for a second or two, than ...
0
votes
0answers
23 views

Windows Search for Video Codecs

Is it possible to search a folder for all video files using a certain codec? I got a bunch of video files from people, and one of the codecs used by some is giving me problems. So I would like to ...
2
votes
2answers
6k views

Which one VoIP SIP audio codec should I choose to high quality calls?

The quality of VoIP calls depends on the codec used for the transmission and on the bandwidth of Internet connection. I want to use best optimized codec for my Internet connection. I have to select ...
1
vote
1answer
573 views

How can I get the Microsoft Expressions 4 Codec to work on XP SP3?

The codec allows you to preview the recording you just took. The recorder itself and the encoder both seem to work just fine, but when I try to preview a recording it says it can't find the codec. ...
2
votes
1answer
2k views

get avi file with codec UMSV to play in vlc, or convert with ffmpeg

I have some video from security cameras. The program outputs in avi file extension. I can play the file in Kaffeine (openSUSE 12.3) but the file doesn't play in vlc--says it does not play files with ...
0
votes
1answer
4k views

Use ffmpeg copy codec to combine *.ts files into a single mp4

I've got a bunch of ts segments described by a single index.m3u8 file: index.m3u8 segment1_0_av.ts segment2_0_av.ts segment3_0_av.ts segment4_0_av.ts segment5_0_av.ts I know they ...
5
votes
2answers
6k views

How can I get thumbnails in Windows Explorer for .3gp and .webm files?

Basic set up On my Windows 7 Professional 64-bit system I have installed K-Lite Codec Pack 7.10 and K-Lite Codec Pack 64-bit 4.6 with only the following options (the idea being to only add what's ...
0
votes
1answer
50 views

Enhance sound of a Video recorded by CamStudio

Ok, so I am trying to use CamStudio for my own youtube channel. I am new to this video codec thing, but I followed this tutorial completely. I am now testing it in full 1080p resolution. I used Xvid ...
13
votes
2answers
6k views

How do I find the codec for an AVI?

How can I find which codec an AVI file needs? A method that does not require downloading a program would be preferred (such as looking at the file in notepad).
3
votes
3answers
307 views

How do I find the codec I just installed?

So I just downloaded CamStudio Lossless Codec 1.5 and ran the setup (http://free-codecs.com/camstudio_lossless_codec_download.htm). I did not see any hints during the setup process as to where ...
1
vote
5answers
934 views

What can I do if I get a movie that is encrypted?

I have a movie and it is not working on KMP. This message appears on the screen: the video is encrypted please download codec How can I handle this?
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vote
4answers
4k views

Windows Media Player not playing MP4 files correctly, codec doesn't work either

I have video files with MP4 extension (downloaded from my cellular phone) and it appears automatically associated with WMP in the computer. It doesn't play correctly because the sound is not ...
0
votes
1answer
3k views

“windows media player cannot play the file” mp4

We have an .mp4 video hosted on a web site. I can play back the video from the production version of the web site, but not the test version of the site. The production web site has the .mp4 MIME ...
0
votes
0answers
119 views

HD Audio codec dump from Windows XP SP2

I have win xp running on my Apple Macbook Air 1,1 (early 2008), with Bootcamp and all the stuff working properly (in particular, I'm interested in the internal microphone) I'd like to get a codec ...
0
votes
0answers
79 views

Video is pixelated on my old HP G60 laptop

I've taken my usual computer in for repair, which was a Dell Inspiron with Windows 7 64-bit. I'm now using an HP G60 notebook with Windows 7 32-bit. I'm noticing a problem that any video files I watch ...
5
votes
1answer
4k views

Why does a Raspberry Pi require a key to playback MPEG2 content?

I was reading here and the article said that linux distros often use free versions of MPEG2. On my Raspberry Pi, however, I had to purchase a license to achieve playback of some of my files. I never ...
0
votes
1answer
262 views

Play `wma` files without installing whole Media Feature Pack in Windows x N

I have Windows 8.1 Pro N version installed, which comes without Windows Media Player and 'media features'. This includes no support for *.wma files. I have been looking for a way to install codec for ...
0
votes
0answers
161 views

Codec information missing after clicking on link to wmv file

I am running Windows 7 64 bit. When using Internet Explorer 9 or Chrome, I get the error: "Windows Media Player cannot play the file. The player might not support the file type or might not ...
3
votes
3answers
2k views

Matlab libraries in Ubuntu

I just installed matlab on my computer, seemingly successfully, but I've been trying to run a program, and I'm getting the following error: >> reproduceResults Warning: Directory already ...
2
votes
3answers
4k views

What codecs does the Windows 7 & Powerpoint 2010 combination support out of the box?

Apologies if this question has been asked many times before... but I can't find a duplicate. I'm helping a colleague prepare a Powerpoint presentation. We have no control over the computer that it ...
2
votes
0answers
2k views

Microsoft Camera Codec Pack not working in Windows 7

Because the Windows Update was not offering this as update after several update checks, I went online and downloaded the Microsoft Camera Codec Pack (6.3.9721.0) from the download center. I used the ...
1
vote
1answer
145 views

What is the lowest FPS at which the human eye can notice a flickering image? (testing this with ffmpeg)

I wanted to check what the lowest FPS is that the human eye cannot notice as flicker. I created a white jpg and a black JPG. I started with 25 fps which means that I have 24 jpg of white and 1 of ...
2
votes
1answer
18k views

No suitable decoder module: VLC does not support the audio or video format “undf”.

I'm playing a video in VLC which has dual audio tracks. It runs fine with one track (Language), but when I change to the second audio track, doesn't play the audio and gives the error below: "No ...
0
votes
0answers
197 views

FFMPEG doesn't convert from m4v files

I am trying to transcode an m4v file from iTunes so I can play it on Windows or XBox. I am running ffmpeg from Windows. Is there some -vcodec I need to specify or something I need to install? ...
56
votes
4answers
10k views

What is a Codec (e.g. DivX?), and how does it differ from a File Format (e.g. MPG)?

I'm so confused... what is the difference between an audio/video codec (which apparently is a shorthand for "encoder/decoder", kind of like how "modem" is really "modulator/demodulator") and an ...
0
votes
1answer
963 views

Optimum parameters for FFMPEG to keep file size

so the idea is: I want to convert every.single.video I have in a 1 terabyte drive to a format that my Chromecast can play (https://developers.google.com/cast/docs/media) and I'll happily leaving my ...
0
votes
0answers
357 views

What video codec over RTP protocol?

I 'm trying to achieve video streaming from a Linux server (ffserver) to a Windows client (VLC player). Although I made it over HTTP protocol, I want the multimedia to be transferred over RTP ...
1
vote
1answer
55 views

Keep input codecs

I have an MKV file with H.264 video and AAC audio. With FFmpeg the default audio codec for MKV is AC3, so if you run a command such as ffmpeg -i infile.mkv -ac 2 outfile.mkv it will transcode the ...
0
votes
1answer
51 views

How to change the code of avi file

I have never worked videos but i need to run a .avi file on windowx xp. The .avi file is smoothly playing in windows 7 bu not able to play in xp I want to play only in windows media player, dont want ...
8
votes
5answers
20k views

How can I make Windows 7 show thumbnails for MKV files?

I'm using Windows 7 64-bit and have installed the latest Haali Media Splitter. How can I make Windows Explorer show thumbnails for MKV files?
1
vote
1answer
2k views

The G2M4 codec of Go to meeting?

I have some wmv files which use the G2M4 codec. They were created by go to meeting. Only windows media player can play these files. I want to remove this codec (is that even possible?) or convert it ...
5
votes
3answers
12k views

Alternative to DVD Player on Mac OS X [closed]

DVD Player is probably the program I use that crashes the most. Are there any alternatives?
0
votes
0answers
160 views

Multimedia codecs for SUSE Linux Enterprise Desktop 11

I've bought notebook from HP with pre-installed SUSE Enterprise 11. I registered system during installation process and upgraded it. I can play all music files but I cannot find any codecs for movies. ...
3
votes
2answers
2k views

Microsoft Internet Explorer: “Your browser does not support this video codec (wmv, flv)”

I'm trying to watch the video in Internet Explorer 11 x64 (Windows 7 SP1 x64 Ultimate). I have the following error message: "Your browser does not support this video codec (wmv, flv)". How can I solve ...
0
votes
3answers
486 views

Windows Media Center Codecs

I like Windows Media Center but I find the codecs limited for it and when I install a codec for Windows Media Player, Windows Media Center doesn't seem to pick it up. So my question is: how do I ...
1
vote
1answer
1k views

Why are my WebM files larger than OGG and MP4 versions?

I have some OGG and MP4 files and I am converting them WebM for use on my website. I have used VLC to convert to WebM. What I have noticed is the WebM file is 8MB while the MP4 and OGG are around ...
0
votes
0answers
23 views

VLC show strange images?

I have windows 8 (i7 , 16gb , ssd ) , with the latest codec pack and latest 64 bit vlc version. When the movie starts - I see the movie ok. But when I scroll position , it shows blurry , strange ...
0
votes
3answers
903 views

Is there a free NEF codec for Windows 7 64-bit?

Is there a free NEF codec for Windows 7 64-bit? NEF is Nikon's RAW picture file format. The NEF codec allows you to view NEF files in Windows Explorer as any other natively supported image formats ...