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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2
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2answers
27 views

Which lossless image codec can achieve the highest compression ratio on photographs of buildings?

I was wondering which lossless image codec is best for compressing photographs* if we only care about final file size? * scanned negativs specifically Additionally does it make a difference if the ...
2
votes
2answers
12 views

How to get and install g723 codecs for sip applications?

I install an ubuntu desktop in my company network (windows network) that use SIP on software phone and hard SIP phones. I use Jitsi that is a good client for SIP and works well with others software ...
1
vote
1answer
18 views

FFmpeg - PNG / JPG - Invalid data found when processing input

I am trying to add a watermark to a video with FFmpeg. I have a custom build of FFmpeg that I am creating with a view to keep the binary size down. I seem to have excluded the ability for FFmpeg to ...
-2
votes
0answers
13 views

Lossless video codec optimized for both capturing and archiving [closed]

know any lossless video codec that optimized for both capturing and archiving for iDevices? I'm looking for a video codec like FLAC that is the de facto lossless audio codec. A lossless video codec ...
1
vote
0answers
105 views

container format requires global headers

Using this file: youtube-dl --youtube-skip-dash-manifest --format m4a --output alpha.m4a 19GFDljxrY0 If I run this FFmpeg command: ffmpeg -i alpha.m4a -c copy bravo.m4a I get this message: ...
2
votes
1answer
15 views

How to hide the opaque gray information on MPC HC in the upper left of the video

I just updated K-Lite Codec Pack. The updated version of MPC HC is showing this gray opaque OSD box: Anyone knows how to disable that? I can't seem to find the option to remove it. It's getting ...
0
votes
0answers
25 views

How to convert video audio codec with ffmpeg

I am trying this command but it fails I need to convert audio track of 17gb movie file with fastest way So i only need to convert audio and leave video file alone Here the command But it fails It ...
0
votes
0answers
45 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 ...
0
votes
0answers
28 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 ...
0
votes
0answers
15 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 ...
1
vote
1answer
220 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
45 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
21 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 ...
-2
votes
3answers
84 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
93 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
92 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
149 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
39 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
158 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 ...
0
votes
1answer
39 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 ...
1
vote
2answers
121 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 ...
0
votes
1answer
118 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?
1
vote
0answers
121 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
319 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
vote
0answers
35 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 ...
2
votes
0answers
86 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
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 ...
3
votes
1answer
312 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 ...
0
votes
0answers
30 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 ...
0
votes
1answer
113 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 ...
0
votes
0answers
182 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
99 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 ...
0
votes
1answer
369 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
210 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 ...
2
votes
1answer
4k 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
177 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 ...
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 ...
1
vote
1answer
68 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
1k 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
1answer
56 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 ...
4
votes
1answer
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 ...
0
votes
0answers
226 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? ...
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
1answer
7k 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 ...
1
vote
1answer
50 views

Does flash video in browser required video codecs?

Imagine situation when I don't have any video codecs and flash installed on my PC. I've downloaded and installed flash player from here. Can I start watching video in the web, or additional codecs ...
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 ...
1
vote
2answers
1k views

Which codecs are supported by ffmpeg libraries in system?

I have Linux server/workstation box which had ffmpeg compilled for it some time ago. Now one type of library for internet communication does not seem to work on one of the endpoints. I think that real ...
1
vote
2answers
970 views

can't find a mp3 codec on ubuntu

Trying to convert an audio CD to mp3. ubuntu says ffmpeg is deprecated and I should use avconv Here are the codecs after i installed all I could find in aptitude for libav that provided codecs. ...
2
votes
1answer
4k views

Which Codec to avoid Recompression in youtube & vimeo

Which codec to use to compress videos that youtube and vimeo don't recompress ? to avoid the quality loss of recompression @Chris let me make it more specific (i posted a geneal question so that ...
4
votes
1answer
22k 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 ...