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.

learn more… | top users | synonyms

5
votes
7answers
1k views

Realtek HD Audio playing weird with certain video formats

I have a Gigabyte motherboard with an onboard Realtek HD sound card. The card is working perfectly everywhere, except for a single video format, where the voice is distorted, sounds as if it's been ...
4
votes
1answer
3k views

What are AC'97 and High Definition Audio?

I've read they were hardware audio codecs. But how are they different from mp3, aac codecs? mp3 and aac codecs can also be implemented in hardware (can't they?). What key differences do AC'97 and ...
1
vote
1answer
717 views

DVDs stuttering on Pentium 4 system with 4gb RAM?

My system used to play DVDs flawlessly. Now all of a sudden, it stutters. I have tested multiple commercial DVDs (standard definition, not HD), which are clean and not scratched. All of them stutter ...
2
votes
1answer
918 views

ffmpeg encoded video - seeking is “quantised” in VLC

I'm running the following command to convert an mp4 video into the VP8/Webm format: ffmpeg -y -i lists.mp4 -f webm -vcodec libvpx -vb 600k -r 20 -acodec libvorbis -ab 64k -ac 1 lists.webm When I ...
1
vote
1answer
421 views

ffmpeg: video file played OK on Ubuntu, but no sound on XP

I created a video clip using ffmpeg (vcodec: mpeg2video, acodec: AC3 5.1). The file can be played normally on Ubuntu, but when I play it on an XP machine, there is no sound. I can play AC3 files and ...
1
vote
1answer
724 views

Adobe Premiere Pro and Elements only play the first seconds of sound for my videos

I have some movie clips from my camera. The problem is that when I import such a video into Adobe Premiere Pro or Elements, the video is working all fine, but from the sound, I just hear a few ...
1
vote
1answer
4k views

FFMPEG able to convert m4a -> mp3, but unable to convert mp3 -> mp3?

FYI: Fedora 8 running on Amazon EC2... Having a difficult time with FFmpeg doing a (what should be pretty simple) conversion. I can get FFmpeg to encode an mp3 file from an m4a file using the ...
2
votes
0answers
3k views

Stream video with FFMPEG, “Output file does not contain any stream”

I would like to stream an H.264 encoded elementary stream wrapped in RTP headers to a port using FFMPEG. I have tried the following command lines to no avail... ffmpeg -i 1080p_1.h264 -f rtp -vcodec ...
3
votes
4answers
5k views

which codec inside mkv file?

I built an HTPC built on a Zotac ion mobo, and i put a 1core conroe chip in it. the 9300 video chip onboard is supposed to accelerate video decoding, but it doesnt seem to be working all the time. ...
0
votes
1answer
437 views

Which file formats can be played slower (or faster) than normal in Windows Media Player?

Some file formats (or some files that are coded used some codecs) can be played in Windows Media Player "slow" or "fast". I can enable this by right clicking on the movie while watching, clicking ...
3
votes
1answer
2k views

How do I play back a video encoded with x264 in QuickTime?

I recently encoded a screencast using x264. The video is here: http://www.libsys.und.edu/dev/ssl.avi It works fine in VLC, but QuickTime claims it needs extra components to play it. I'm confused. ...
3
votes
4answers
731 views

Which file format to use for simple video editoring

I've just bought a Sanyo VPC-CG10 camcorder which saves clips as MPEG-4 (specifically, High-Definition 720p MPEG-4 AVC/H.246) I want a simple, cheap way to edit the clips and as, I'm using Windows ...
9
votes
3answers
1k views

What is the current state of development for the FLAC codec? [closed]

I have a pretty large collection of FLAC files created from my CD collection. I love the FLAC format and the sound quality that you can get from it. Lately, however, I've been trying to write a few ...
2
votes
2answers
944 views

Codec supported by most exernal DVD/Video players

My video camera records video using H.264 codec, although it does not look like old DVD players support this format. I would like to convert these videos into some most commonly found, generic ...
5
votes
3answers
2k views

Is there still need for codecs in Windows 7?

Aren't modern OS already packaged with the basic and most used codecs? Is there any reason to install a codec pack on a Windows 7? What are those reasons? Where can someone look for safe codec packs? ...
0
votes
0answers
297 views

Cannot get Xvid video codec to work

I have several videos that were encoded with XVID MPEG-4 video codec that I cannot get to play correctly on my Windows 7 laptop. Have no problems playing videos with other codecs. I have tried ...
0
votes
1answer
228 views

What resources or software should my computer have to play M2TS file without delays?

My computer's configuration is: Intel Core i5-2500 3.30GHz RAM 8 GB NVIDIA GeForce GTX 460 1GB HDD 1GB 7200 Sound Blaster X-Fi Xtreme Audio Monitor with 1920x1200 resolution Windows 7 Ultimate ...
0
votes
1answer
145 views

Which codec is optimal for streaming a screencast with a small webcam PIP?

I need to stream a video feed generated in real time using CamTwist and QuickTime Broadcaster on OS X. The video is of a fairly static desktop, with some mouse movements, and occasional mild changes ...
0
votes
2answers
412 views

Windows Media Player - Can't find video codec for the file, will it still play the audio part?

If I try to play a movie file, whose video codec WMP doesn't recognize, and assuming it does know the audio type, will it play just the audio ? or will it flash an error message and stop? How do I ...
4
votes
3answers
68k views

Install codecs for VirtualDub

I have many video codecs installed on my machine but Virtualdub only lets me choose from a very basic selection. Do I have to manually point VirtualDub to the codecs somehow?
1
vote
3answers
4k views

CoreAVC Professional on Windows 7

Has anyone had any success in getting CoreAVC with Haali Media Splitter playback on Windows 7? I've been trying both KMPlayer (the Korean one, not the OSS one) and Media Player Classic Home Cinema ...
2
votes
1answer
131 views

Do I really need a specific headset to get the benefit of Super Wideband Audio?

Back in 2003 Skype released their Super Wideband Audio codec which was supposed to be a lot better than all other audio codecs. (better sound less bandwidth.) And they give it away with a royalty free ...
3
votes
2answers
786 views

What media formats do I have to use to prevent Zune from having to convert media for Windows Phone?

Zune is able to accept pretty much every media format under the sun, or at least can once someone's installed something like the KLite Codec Pack. However, it does do conversion on your behalf to a ...
2
votes
3answers
201 views

Burning DVDs to disk - what audio codec should I pick?

I finally got around to burning all the DVDs to files, so that I can get rid of all the plastic media once and for all. Most DVDs have several audio codecs available (2 channel stereo or 5.1 Dolby). ...
4
votes
7answers
9k views

How do I watch 1080p video on this setup computer without lagg?

My hardware: CPU: Q6600 @ 2.4GHz RAM: 4GB GPU: Radeon HD5750 OS: Windows 7 Ultimate x64 Codecs: K-lite codec pack default install I'm trying to watch a 1080p bluray movie backup ...
3
votes
1answer
4k views

Best video format for Windows and Mac Compatibility?

I'm about to encode several videos that will physically distributed to clients running either Windows XP (and upwards) or OS X. Is there a compressed format that would be playable on both platforms ...
1
vote
2answers
14k views

How can I check the video/audio format for a MKV file?

I have a MKV video file. Can you please tell me how I can find out the video/audio codec of that file, and how I can find out if it is 1080p or 1080i? I have a Windows 7 desktop PC. Thank you.
1
vote
1answer
6k views

GOM Player can't play RealMedia files

I have CCCP codec pack installed on my system which runs Windows 7. However, GOM Player cannot play RealMedia files like .rm and .rmvb. As I won't use any other players, how can I make GOM Player play ...
0
votes
1answer
99 views

Bandwidth Aware Video Streaming

In the recent Broadcasts of IPL Matches on YouTube (Indian Premier League), I noticed that the Video Quality of the live stream degrades and Up-scales according to the bandwidth available. This is a ...
0
votes
1answer
175 views

Windows Media Based video audio converter?

This may seem like an odd question. Right now ONLY windows media player, VLC and media player classic opens and plays my audio video correctly. Virtualdub plays it back with the wrong framerate and ...
1
vote
1answer
518 views

streaming video on Ubuntu 9.10

I am trying to get streaming video to work on install of fully up to date Ubuntu 9.10. For example: http://cbc.ca/video I am guessing that the packages/codecs necessary cannot be distributed with ...
1
vote
1answer
3k views

Winamp playing sound but no video

I am having problems playing video in Winamp (the movie I am trying to play is an AVI - not sure if other formats work). I have installed the K-Lite Codec Pack, and the video does work in Winamp ...
2
votes
1answer
250 views

Which codec and (Linux) video tool for highly compatible video on Windows?

I'm looking for a Linux tool that allows me to transcode videos to a video codec that is highly compatible to the Windows platform. We produce large scientific videos from measurements and would like ...
1
vote
1answer
153 views

Playing video dumps .wav files into root directory until hard drive is full

After playing a (Xvid) video on my laptop my hard drive space is zero. Turns out loads of files like AC3_xxxxxx.wav are dumped to my C:\ root directory (where xxxxx are some seemingly random ...
1
vote
2answers
639 views

How to add/remove codecs in linux

Friends, I'm new to Linux, I need to work on Linux. I have ported Linux to AT91SAM9261-EK board. Now i need to work on Codecs. I just know the definition of codec from wikipedia, Now i need add my ...
0
votes
1answer
678 views

Codec and format problems with DLNA Server

I use the Windows build in DLNA server controlled with the Windows Media Player under Windows Vista. This is working. The problem is that the Sony Bravia TV does not list all videos which I have ...
1
vote
1answer
795 views

How to install x264 for use with ffdshow

x264 isn't showing in ffdshow. I downloaded x264.exe. What am I supposed to do with it so that x264 will show in ffdshow?
0
votes
3answers
418 views

This .mpg video clip doesn't play well

I've installed K-lite mega codec pack v6.9.0 with playback essentials without player. My default and only media player is windows media player. here are the clip's media info: General Complete name ...
0
votes
3answers
7k views

Ways to play 1080p video on laptop that is not capable to run it

How to run 1080 video on laptop that can only play smoothly 720p video because of its poor hardware? Can I download some special codecs or lower details in some way, or do I need to change its format ...
2
votes
1answer
132 views

converting mp3 to 3gp

How can I convert mp3 files to 3gp files that use the AMR-WB+ codec?
2
votes
1answer
1k views

What tool can I use to transcode my videos to Webm?

What tools can I use to transcode my videos to Webm?
1
vote
1answer
69 views

What video codecs have most amount of content and thus popular at present/in future? [closed]

I want to find out if I can get some data on the percentage wise distribution of video content, for different video codecs currently used for video encoding. I know there are different ...
0
votes
1answer
2k views

Why does lossless video compression cause the file size to go way up?

I have a 200MB AVI that I'm trying to add hardsubs to. I'm using VirtualDub to do it. I selected the H264 lossless codec for compression. The resulting file is 800MB. Why does this happen? Is there a ...
1
vote
1answer
1k views

install Multimedia codecs, flash on linux

i had easylife for fedora that it can install codecs and flash and some other software very easily. i want to know: is there like this tools for Debain?
0
votes
1answer
458 views

Flash video for Windows/VirtualDub/media player

I don't want to install any codec packs because I remember the last time I did it unwanted results occurred. (I think a codec didn't play nice with an application and was a known problem with the ...
2
votes
2answers
1k views

Sony Vegas 8 and VirtualDub codec problem

I have an EzCap 116 capture device, which can capture video and audio from composite cables. I capture the video in VirtualDub using its "Capture AVI" function. VirtualDub apparently encodes the ...
1
vote
1answer
61 views

Changing codec of audio but not video?

I want to convert audio tracks of some video I have. These are mkv files, and I want to convert only the audio. The video codec is fine. I attempted to use VLC, but VLC added occasional blocking ...
1
vote
1answer
308 views

Are f4v-files the same as flv-files?

Are these two the same just with another extension?
-2
votes
1answer
424 views

Protect video file using DRM

I would like to protect a video file (can be any format, avi, wmv, mkv) Something like, user should only be allowed to view first 10 seconds of video or a another video clip showing link to site where ...
4
votes
2answers
253 views

Ripping a DVD to watch on iPod touch

I have a DVD that I'd like to watch on my iPod touch. Can I use normal PC ripping software or is there something special I need to do to get iTunes to sync it to my iPod?