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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28 views

ffmpeg Audio Conversion m4a to wav - file size bloat

While converting audio files from *.m4a to *.wav using ffmpeg (and other audio converters - I've tried a few and cannot remember but they were worse) the file size increases by a lot (10x). original ...
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1answer
91 views

Use FFMPEG To Convert .MKV to .MP4 With Conversion Settings

I am using a powershell script and ffmpeg to convert mkv files to mp4 files so that I can stream them using serviio The script executes as it should, however when serviio tries to add the converted ...
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0answers
71 views

how to remove “Writing library” & “Encoding settings” from the video when used ffmpeg convert?

when I used this commond: C:\Windows\bin\ffmpeg.exe -y -i f:\1.flv -vcodec h264 -s 1280x720 -acodec copy f:\output.mp4 The video output.mp4 information: General Complete name : ...
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0answers
37 views

Pipe audio from VLC to stdout?

I want VLC to play some video (from VLC), but have the audio be outputted to stdout or a file. Here's what I've been trying to do, but it obviously doesn't work. It's a FLV file btw: DISPLAY=:0 vlc -...
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1answer
502 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 ...
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0answers
107 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 ...
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1answer
98 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. ...
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1answer
86 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
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1answer
110 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 ...
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0answers
25 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 I'...
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1answer
54 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 user'...
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1answer
137 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 ...
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1answer
78 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, ...
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votes
1answer
31 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 ...
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0answers
79 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 ...
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0answers
39 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 ...
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1answer
314 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, ...
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1answer
88 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 ...
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1answer
105 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 ...
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1answer
38 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 ...
3
votes
1answer
28 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 ...
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0answers
46 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. ...
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1answer
77 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 ...
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0answers
86 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 ...
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83 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 ...
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0answers
570 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 ...
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282 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 ...
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2answers
594 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 ...
2
votes
1answer
272 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 ...
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0answers
103 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 ...
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117 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
381 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 ...
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0answers
319 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 ...
3
votes
1answer
1k 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
62 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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1answer
304 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 ...
0
votes
1answer
103 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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1answer
27 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 ...
0
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1answer
45 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
872 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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votes
2answers
251 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 ...
2
votes
1answer
3k 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
190 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
289 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 rtsp://username:...
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0answers
128 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
105 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
2k 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
296 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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votes
2answers
226 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
469 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 ...