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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4
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2answers
7k 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 ...
5
votes
2answers
11k 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 ...
1
vote
2answers
110 views

Installing the iLBC codec (libilbc) on Mac OS X for use with FFmpeg

I'm trying to use FFmpeg to encode files with the iLBC codec, e.g.: ffmpeg -i audio.wav -ar 8000 -acodec ilbc audio.lbc -y This worked fine on Windows, however on Mac OS X I'm getting the error ...
2
votes
1answer
3k 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 ...
0
votes
0answers
27 views

Incorrect Codec Parameters While using '-acodec' option while Working with FFMPEG

I am working with FFMPEG Library. I am capturing streams in particular compression codes to the destination file with the specified format with the following command: ffmpeg -i ...
5
votes
2answers
11k 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 ...
0
votes
0answers
13 views

FFmpeg Degrades Quality of Video [closed]

I have been tasked with converting a batch of videos from MOV to MP4 for an application my company is building. We're converting the videos because a short MOV file has an extremely large file size ...
0
votes
0answers
23 views

How can I encode an image sequence to a 24bit RGB888 AVI file on OSX?

I would like to convert an image sequence(PNG or JPG) to an RGB888 avi file on OSX. I used VirtualDub on Windows, but I'd rather not go back and forth between operating systems if I can. I did try ...
1
vote
1answer
131 views

How do I know if hardware acceleration of the GPU is enabled in VLC?

Under the new VLC interface (Linux) with video-Catalyst driver installed what option I can chose to enable GPU hardware acceleration? How can I be sure it is enabled? $ vainfo give me this ...
1
vote
1answer
34 views

Unable to re-encode audio stream with different bitrate using ffmpeg

A similar question has been asked elsewhere without a satisfying answer for me. The following ffmpeg command results in error. When "-c:a copy" is added to just copy the audio stream, the video ...
0
votes
0answers
16 views

How do i configure background traffic in Opnet 16.4?

I am currently working on a project which investigates codec performance over IPv6 networks. i have a two topologies for each codec, one with background traffic and one without. so far i have only ...
0
votes
2answers
5k views

How do I compress my video without compromising it too much

Alright, i'm down to crunch time. I have a video that I have rendered out for something I have to turn in. The submission requires that it be At Most: 200 MB and be one of the following formats: ...
0
votes
1answer
144 views

how to join ts files together into mp4 with ffmpeg?

I download a lot of streams since the internet speed is too slow to watch high definition. When I download a stream I find the .m3u8 file which points to the TS files. Then I use the following ...
-2
votes
3answers
79 views

MP4 files I download look pale and have colors misplaced [closed]

Ok, first things first: here's a screenshot from a recap I've downloaded. I guess if Neil Patrick Harris would host the ceremony back in 70s it'd look like that. There's this obvious offset of the ...
1
vote
0answers
85 views

VLC freezes in fullscreen

I am running VLC media player 2.0.6 Twoflower under Linux Mint 17. I do not have a dedicated graphics card so the display output is set to X11. With certain .avi files (not all of them) the video ...
0
votes
0answers
89 views

Using ffmpeg for mp3 conversion: could not find codec parameters / unspecified frame size

I have an mp3 file that I can't play with any of my audio players that I have on Windows 8, so I decided to convert it using ffmpeg. I downloaded it from a website, which was able to play the mp3. I ...
0
votes
0answers
139 views

ffmpeg or video codec

I have this problem but I don't understand if is a codec or wrong ffmpeg profile. I'm viewing a video in a web player (videojs). From some PC video work good but, from other PCs, with the same version ...
0
votes
0answers
36 views

MJPEG format not working

Gphoto2 captures live preview frames from cameras and store them as a MJPEG encoded movie. For some reason, nothing besides ffmpeg works with it as it should, all programs just see the first JPG ...
0
votes
1answer
36 views

Change audio track of a video without codec

I have some AVI files of an old Win 3.11 game, where I want to change the audio track, without touching the video part. I have a (propertiary) codec as *.drv file (VfW; works in Win95), but it is ...
0
votes
1answer
105 views

ffdshow filter cannot be selected in Media Player Classic-HC

I installed ffdshow on my Windows 8.1 x64, as you can see: My MPC-HC can't see it as an external filter: Where should I look for it?
4
votes
3answers
5k views

Video encoding: How much does the video file size increase with fps?

Given that the next blockbusters of e.g. Peter Jackson (The Hobbit) and James Cameron (Avatar 2) are going to be shot with a frame rate of 48 fps (or even more) - i.e. more than the usual 24 fps - I ...
0
votes
2answers
1k 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 ...
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
104 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
272 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
33 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 ...
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
80 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 ...
3
votes
1answer
302 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 ...
2
votes
0answers
956 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.
4
votes
1answer
21k 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
29 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
8k 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
711 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
6k 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
8k 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
109 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
7k 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
453 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
1k 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?
1
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
172 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
97 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
5k 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
351 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
203 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 ...
3
votes
3answers
6k 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 ...