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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Corrupt MP4 file: ffmpeg codec, global header, and dvvideo errors. Can it be repaired?

So, I have a number of corrupt MP4 files (some corrupt AVI files, too, but I believe that's a different problem). They seem to have gone corrupt when I had an external hard drive that they were on ...
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1answer
25 views

Is it possible to use aptX on unsupported computers or phones?

I've been reading up recently on different ways of wirelessly streaming media. At first I ignored bluetooth connections because of the quality, but then I started reading about aptX, which sounded ...
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0answers
10 views

OneNote 2013: How to change the Codec from Windows Media Audio 9 to 10

I'm trying to improve the audio recordings in OneNote. I need to be able to record lectures in lecture halls without the audio sounding garbled. HELP PLEASE. I think I might be able to start by ...
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0answers
17 views

Bandicam Reinstallation stopped working

I had the product Bandicam installed on my Windows 7 computer. It worked great and got done what I needed it to. I uninstalled it previously, but decided to reinstall it a few weeks ago. After ...
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1answer
47 views

Php ffmpeg exec

with code $a = exec('"ffmpeg" -y -i "test.mp4" -ab 128k -s 640x480 -vcodec mpeg4 -acodec:a copy "output.mp4" 2>&1 ', $output, $error); Input file was 82.21mb output file was 13.74mb ...
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1answer
18 views

What does Asterisk need codecs for?

Let's take a system which consists of one Asterisk server and two SIP clients. Each client has an equal set of codecs installed. Traffic encoding and decoding is performed on a client side. Then why ...
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0answers
9 views

Are video encoders installed per-application or system-wide on Windows?

I normally use Linux where, if I want programs to be able to encode video, once libXXXX.so is installed all programs which are aware of it can use it. By comparison, I have witnessed various programs ...
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1answer
34 views

What all factors affect the ability of a video player to play a particular file?

I am trying to determine what all factors decide whether a file can be played by a particular video player, such as software or dvd player or TV with usb function or any media player. Are there other ...
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1answer
68 views

Playing opus files under ubuntu

Opus is a new audio codec standard for audio on the web. Features include: Better compression than mp3/ogg/aac. Good for both music and spoken word. Dynamically adjustable bitrate, audio bandwidth, ...
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2answers
74 views

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

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
41 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 ...
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1answer
340 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 ...
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1k 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: ...
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1answer
27 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 ...
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0answers
84 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 ...
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0answers
50 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 ...
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0answers
29 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 ...
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1answer
506 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 ...
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1answer
96 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 ...
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0answers
35 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 ...
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3answers
111 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 ...
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0answers
134 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 ...
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118 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 ...
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0answers
181 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 ...
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49 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 ...
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1answer
242 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 ...
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2answers
50 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 ...
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2answers
169 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 ...
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1answer
171 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?
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0answers
184 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 ...
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0answers
440 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% ...
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38 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 ...
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0answers
101 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 ...
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2answers
2k 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
356 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 ...
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0answers
35 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 ...
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1answer
137 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 ...
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1answer
424 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 ...
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0answers
230 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 ...
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votes
1answer
5k 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 ...
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1answer
192 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 ...
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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 ...
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1answer
76 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 ...
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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 ...
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1answer
60 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
8k 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 ...
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268 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
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2answers
3k 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 ...
2
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1answer
8k 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 ...
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1answer
51 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 ...