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
votes
2answers
49k 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 ...
-4
votes
0answers
22 views

Intel Pentium dual- core CPU E5800@3.20GHz will be able to play x265 1080p videos? [on hold]

I have a series with each episode of about 20 min in length (180-200MB per episode). Does Intel Pentium dual-core CPU E5800@3.20GHz will be able to play these x265 1080p videos? The file with videos ...
1
vote
1answer
33 views

Trouble playing 1080p HEVC format on VLC, MPC, Potplayer

I am having trouble playing HEVC 1080p file on my system. I don't have a really strong PC, but I will give the facts: Ram: 2GB OS: Win 7 ultimate processor: Pentium(R) Dual-Core T4500 @2.3Ghz ...
0
votes
0answers
43 views

How do I use FFmpeg to convert .264 CCTV footage files to mp4 with h.264 codec?

I get the following error when I try to convert my test.264 file to mp4 using FFmpeg: Log C:\ffmpeg\bin>ffplay -f h264 test.264 ffplay version N-29947-gcd244fa Copyright <c> 2003-2016 the ...
1
vote
2answers
463 views

Problems installing ffmpeg with Homebrew

I get the error when I try to convert mp4 to webm: Encoder (codec vp8) not found for output stream #0:0 Google search tells me that I need libvpx installed, but I've done that. I've installed with ...
6
votes
4answers
17k 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
votes
0answers
14 views

How do I encode a video file using a specific codec in Adobe Media Encoder?

I search high and low across the internet and this questions is NOT answered in a straight forward way anywhere! I have an assignment where I have a short ProRes video file that I must encode with ...
0
votes
1answer
39 views

Recovery of corrupt .mov file from dash cam

Yesterday on the way to work I was run into by a truck. I felt relaxed that I had my dash cam running only to find out last night when I tried to retrieve the commute file that it could not be opened. ...
1
vote
1answer
329 views

mplayer (mplayerhq.hu) repeats ending audio frames

mplayer (from mplayerhq.hu) on windows repeats the last few audio frames upon exit. When the video ends, before you can see Exiting... (End of file) in the command prompt, you will hear the ...
0
votes
1answer
40 views

Convert m4a to aac without quality loss?

I wanna use a program on an .m4a file, but the program can't handle .m4a. It can handle .aac, however, and the codec of the file is MPEG-4 AAC. Is there a way to convert to .aac (and preferably ...
0
votes
1answer
72 views

FFmpeg concatenate - Error while opening encoder

I have an Android application that uses ffmpeg to concatenates 2 mp4 video files (360x640) together and outputs it as one .mp4. This is my command: ffmpeg -y -i vid_1.mp4 -i vid_2.mp4 -strict ...
0
votes
0answers
23 views

downloaded videos without end point.Can't scroll through

I have a habit of capturing videos from online streaming sites using IDM and problem is they show duration in mediatab but while playing them in different players they don't show total duration and ...
1
vote
1answer
49 views

Data loss due to transcoding video[ffmpeg]

I have a app which takes in user's video and does some processing. the processing pipeline consists of multiple steps. The code which i have written so far assumes h264 codec for input video. But ...
0
votes
1answer
79 views

overlaying in ffmpeg failed due to audio codec how to fix it?

I am using ffmpeg to overlaying searies of images on video but on some occasions on some mp4 videos it fails some time it works perfactly my command gives error like Could not write header for output ...
13
votes
2answers
10k 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).
0
votes
1answer
3k views

Why can't I convert FLV to MP4 format using FFmpeg when MP3 works?

In fact I have succeeded to convert FLV to MP3: D:\tmp\ffmpeg-20121005-git-d9dfe9a-win64-static\ffmpeg-20121005-git-d9dfe9a-win 4-static\bin>ffmpeg.exe -i a.flv -acodec mp3 a.mp3 ffmpeg version ...
0
votes
1answer
57 views

ffmpeg: select (-map) audio track by codec id

How can I use ffmpeg -map switch to select the audio track by its codec? Say there is a video.mkv with one video stream (0) and three audio tracks (1, 2, 3). The audio tracks have different codecs, ...
-1
votes
1answer
27 views

Am I even burdened with choosing where and how to decode my video?

Whenever I setup K-Lite codec pack, like during an MPC install, this step of K-Lite always trips me up: It is never clear to me what is going on. No matter what I choose I will first have to decide ...
0
votes
1answer
2k views

Media Player Classic Homecinema display problem

Recently I started having problems with Media Player Classic Homecinema. As far as I know, I didn't install any updates (or any new software actually). Also, I'm using default Windows 7 RC codecs; I ...
3
votes
4answers
1k 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 ...
7
votes
2answers
15k 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
55 views

Unable to play mp3 file on some devices?

I have noticed a certain phenomenon over the last few years... Some mp3 files do not work with certain devices: Example: If I download a file file from the internet, I will be able to listen to it ...
0
votes
0answers
36 views

Quality loss in ffdshow deinterlacing settings

I have been using ffdshow and haali media splitter aka matroska splitter as video codecs in order to export video in Ableton Live. However, external configuration of ffdshow is required. There are ...
1
vote
1answer
25 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 ...
8
votes
1answer
16k 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 ...
0
votes
1answer
252 views

Decoding x265 HEVC more efficiently

I have an old Extreme i7 first generation with 12 threads running a PLEX server. LAtely I've started adding more files compiled using x265 over x264. I noticed that when the system runs a x265 file, ...
0
votes
2answers
215 views

How to learn about media encoding, decoding, formats, etc [closed]

While engaging in some media processing (ripping DVD to .avi to watch on my laptop), I became interested in all the technicalities I encountered regarding the video and audio encoding etc. What are ...
0
votes
1answer
80 views

asterisk 11.7 with app_mp4 for playing mp4 videos

I have successfully compiled and run app_mp4 for asterisk 11.7 and recording audio/video with MP4Save. I am using ulaw as audio codec and h263 (simple h263 not 1998 or 2000) video codec. Although I ...
1
vote
1answer
61 views

Common video format for TV (old decoder) playback

I have a PHILIPS TV/Monitor. I want to watch movies from USB flash drive directly on the TV. The problem is - PHILIPS do not have any updates for the TV software. I requested an update, but request ...
0
votes
1answer
27 views

Raw Bitstream vs Container?

I've been researching multimedia formats (although recently, I've been told not to use the word "format" as it's ambiguous.) I learned that a video file is composed of the Raw Bitstream encoded ...
2
votes
1answer
26 views

Need help searching video files by encoding format profile

I am looking for a way to search all my video files (directory/recursive) that have a "Format profile" of QuickTime and/or "Codec ID" of qt. I just found out that my encoding software has ...
-2
votes
2answers
981 views

What is the audio encoding codec that has the less latency?

There is a lot of audio codecs : MP3 AAC FLAC OGG SPEEX etc Some compress a lot and other less .... however it does not mean that one codec is having less less latency than another. For a general ...
9
votes
2answers
12k views

How does bitrate differ for the same resolution and framerate?

Reading about video quality I found that it depends of resolution, frames per second and bitrate, which decides the size of the video. My question is how the bitrate is calculated and how it can ...
1
vote
0answers
38 views

(FFMpeg) Split the video by size after conversion

I have a 5,000MB long video in .mp4 format. I would like to split the video into segments by the size. For example, I set the size to 1,024,000KB, or simply 1,024MB, because I want it to be accurate. ...
1
vote
1answer
7k 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
1answer
69 views

Video compression size s and codecs from JPEG

I am building a data logger with 3 cameras which output as jpeg frames (o.79MB/jpeg @24bit/pixel) at 24 frames per second. I want to take these images and convert it to a video. Each For the video I ...
1
vote
0answers
75 views

Strange video behaviour

I have a video made by my mobile phone (Huawei Honor - Android 2.3). I haven't problems with them some time ago. Unfortunately, I have now and I don't know why. I'm using Linux Mint 17. When trying ...
0
votes
0answers
77 views

avconv combined audio and video streams, mplayer fails to play audio

I have a movie.avi file compressed with DivX which I'm trying to recompress with H264. I compressed the video stream with x264, leaving the audio as is. I'd prefer to compress everything at once, but ...
0
votes
0answers
485 views

No sound in mplayer - A_OPUS codec

mplayer2 fails to play the sound of some .mkv files. I installed vlc and it is able to play with sound. mplayer2 output: MPlayer2 2.0-728-g2c378c7-4+b1 (C) 2000-2012 MPlayer Team Playing Invisible ...
0
votes
2answers
158 views

How could I represent 1.625 by 0 or a 1 (binary digit)?

This is an excerpt from wikipedia about 'full rate' speech coding standard. Full Rate or FR or GSM-FR or GSM 06.10 was the first digital speech coding standard used in the GSM digital mobile ...
0
votes
1answer
96 views

How BroadcomVoice16 use 2-bits per sample to produce voice?

BroadVoice16 (BV16) is a speech codec that operates at an input sampling rate of 8 kHz and an encoding bit rate of 16 kb/s, or 2 bits per sample. That's an excerpt from BroadVoice 16 Speech Codec ...
0
votes
0answers
243 views

Why won't Windows Media Player use my PowerDVD MPEG-2 codec?

My MPEG-2 files will not play in Windows Media Player (32-bit) in Windows 10. This includes both .mpg and .m2t files. When I attempt to play them I get the message "Windows Media Player encountered ...
2
votes
1answer
2k 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
1answer
184 views

Troupble with ffmpeg MP4 to Webm

I get the error when I try to conver mp4 to webm: Encoder (codec vp8) not found for output stream #0:0 Google search tells me that I need libvpx installed, but I've done that. here is the rest of ...
0
votes
0answers
92 views

Codec missing powerpoint; how do I get get my media to play?

I designed a presentation pull of interconnected audio & video files in 2013. Edited since in 2007 and most of my media wont play. Tested in 2010; It offers to upgrade the media and then says ...
1
vote
1answer
240 views

SWF -> Compatible YouTube format and retain ActionScript

I have an swf (just a sequence of slides with audio, timing controlled by actionscript) that I want to convert to a compatible YouTube format (flv, mp4, etc.). I've tried using the Moyea SWF4Tube ...
0
votes
0answers
109 views

Convert videos to MP4 iPad (h264 and aac), but leave video codec alone if h264 already

I want to batch convert video files with different extensions and convert them to MP4. If the video codec is already H.264, I want to copy it and convert the audio only if it is AC3, MP3, or anything ...
2
votes
0answers
349 views

Cannot play video file from external hard drive on Windows 10

I have upgraded my OS from 8.1 to 10 and I have this weird problem that if I open a video file from my external hard drive it doesn't play but when I copy the same file to my desktop it works fine. I ...
1
vote
0answers
289 views

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 ...
2
votes
1answer
881 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 ...