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Audio Video

audio-video

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by potluri_suresh
Raw Audio data is encoded to AMR-NB audio using opencore-amr library
by V. Subhash
Cut, copy, convert, mix, rotate, flip, resize, crop, combine, compose, blur, sharpen, smoothen, side-by-side split, PIP inset, fade in/out using FFmpeg Filters
by dolhaig
How to Resume the User's music after we played a video or audio from our Silverlight/XNA WP7 Application.
by Banjoo
Stream TCP Audio data (Voice Chat over IP)

Latest Articles

by V. Subhash
Cut, copy, convert, mix, rotate, flip, resize, crop, combine, compose, blur, sharpen, smoothen, side-by-side split, PIP inset, fade in/out using FFmpeg Filters
by Maxim Komlev
Experiment of Video Transcoding and Streaming on the fly to all major internet browsers (just to video tag) without Flash or Silverlight
by leshkoapps
How you can use AVAssetResourceLoader and AVPlayer in your apps
by Banjoo
Stream TCP Audio data (Voice Chat over IP)

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Audio Video 

17 Feb 2012 by potluri_suresh
Raw Audio data is encoded to AMR-NB audio using opencore-amr library
15 Mar 2010 by OriginalGriff
Don't post this under Quick Answers - if you got the code from an article, then there is a "new message" button at the bottom of that article, which causes an email to be sent to the author. They are then alerted that you wish to speak to them.Posting this here relies on them "dropping by" and...
25 Aug 2011 by OriginalGriff
AFAIK, you can't, not without some specialized hardware to monitor the physical port.
21 Jun 2021 by V. Subhash
Cut, copy, convert, mix, rotate, flip, resize, crop, combine, compose, blur, sharpen, smoothen, side-by-side split, PIP inset, fade in/out using FFmpeg Filters
25 Jan 2010 by Christian Graus
If you're new to PHP, why would you be working on a project where you have a requirement ? Oh, that's right. Outsourcing. Brave new world, etc.It works the same. You store the path. To show an image, you'd be rendering an img tag, right ? Or just sending a byte stream and showing it on...
30 May 2010 by DaveyM69
Use WaveInGetNumDevs[^] to get the number of devices - ID's are 0 to WaveInGetNumDevs -1.To get information about the device use WaveInGetDevCaps[^] and examine the WAVEINCAPS[^] in pwic.
11 Jun 2010 by yales
i solved the problem. Following code, changes each channel volume. The sound card has 8 channels.MMRESULT mResult;HMIXER mHMixer;MIXERLINE mML;MIXERLINECONTROLS mMLC;MIXERCONTROL ...
6 Oct 2010 by ely_bob
Nope, unless you have DoD/DoJ permissions, maybe...I've been told by an old school hardware guy that DoD/DoJ (Department of Defense, and Department of Justice) have access to a "ghost" drive which handles/copies all the backup data to ensure that people don't say download illegal materials,...
15 Oct 2011 by André Kraak
Have a look at this Developing a Video Chat Application with high quality video streaming[^].
15 Jan 2012 by RasheshJagad
First register axvlc.dll from "C:\Program Files\VideoLAN\VLC\axvlc.dll"Then add it as com component
25 Jan 2010 by Mohal
Dear Coders and Helpers,I am new in PHP and currently working on a project in which I am required to store audio clips from users onto server. I recently learned how to store images onto server. For that I store Image link into MySQL database rather than storing actual image in the database....
16 Mar 2010 by arasan007
Hi all,Can anyone suggest me, i'm trying to get the audio and video from webcam using Ffmpeg and display them through wowza media server via RTMP.Thanks in advance.Arasu
16 Mar 2010 by Dave Kreskowiak
Your best source of information on this would be the people who wrote Xuggler. It is very unlikely anyone who answers questions on a regular basis around here is going to have any experience with Xuggler.
29 Apr 2010 by Jackzhonh
Hello, I have a problem must to be resolved soon, I have looked for a lot of information and published in many forums, unfortunately, that is still not resolved . I can get default render endpoint device by using IMMDeviceEnumerator::GetDefaultAudioEndpoint function, and get all endpoint...
28 Apr 2010 by nguyenvanven
I see a code to play a wav file: TCHAR szMCIString[260]; TCHAR szDevType[245]; TCHAR szFileName[245]; MCIERROR dwReturn; wcscpy(szFileName,L"E:\\v.mp3"); wcscpy(szDevType,L"wavaudio"); _stprintf(szMCIString,_T("open %s type %s alias MyWAV"),szFileName, ...
28 Apr 2010 by nguyenvanven
oh! sorry, this isn't my error code. wcscpy(szFileName,L"E:\\v.mp3");my code is wcscpy(szFileName,L"E:\\v.wav"); but it is in error! thanks for help.PS: how i can play mp3 file, MCI is not have a format for mp3.
29 Apr 2010 by wgh16899
WAVEFORMATEX in_wfx;in_wfx.wFormatTag = WAVE_FORMAT_PCM;in_wfx.nChannels =1;in_wfx.nSamplesPerSec =8000;in_wfx.nAvgBytesPerSec =16000;in_wfx.nBlockAlign =2;in_wfx.wBitsPerSample =16;in_wfx.cbSize = 0; how to convert above form to bellow form?WAVEFORMATEX...
1 May 2010 by nguyenvanven
I use mciSend command to set a window for my movie open by mcisendcommand:MCI_DGV_WINDOW_PARMS mciWindow;mciWindow.hWnd = hWnd;mciSendCommand(mciDevId, MCI_WINDOW,MCI_DGV_WINDOW_HWND, (DWORD)(LPSTR)&mciWindow);hWnd is a handle of window is created:HWND hWnd = ...
13 May 2010 by ProkopisCamco
Hi everybody.I am a new VB programmer in Visual Studio 2005 and I would like to ask you if there is any component to adjust the volume of the sound in my application.I have done the other buttons like "play,pause,stop..." but I don't know how to adjust the sound through my application.I...
17 May 2010 by Member 2065437
Hi Andrew, I have written an application which uses DirectShow to read the stream from an Axis camera, which works really well. However, when we switch security on in the camera, when we try to connect we get a login dialog box that pops up. Do you know if there is a way we can pass the...
17 May 2010 by Member 2065437
Thanks for the two comments above. I want to develop something that is camera agnostic, and therefore using the SDK would not work as they are specific to axis cameras (although they are very good). Axis do provide DirectShow filters as well, although they don’t provide support for them. These...
18 May 2010 by czbever
I have a flash file: a.swf, how can I program with c/c++ to convert it to scr format?
18 May 2010 by Richard MacCutchan
Windows screen saver files (.scr) are actually executables that are instantiated by the system, so to make your movie into a screen saver you will need to create some code to run the flash file. John Walker has some great samples of screen savers (including source code) here[^].
19 May 2010 by adventurous_pk
Hello, I am looking to get input from 2 sound cards and then do compression on the data. Can I get some assistance on this? What I know at this point is that DirectX can be used for getting the speech input. But I need to know how can I do real time data and do real time compression on...
19 May 2010 by lucasescucha
Hi, I'm Lucas. Thank you very much for yours contributions. I'm reading the article "FFT of waveIn audio signals". I want to make a soft for filtering signals in real time using waveIn and waveOut, and I have not information about this API. Have you got any book, or any tutorial of this? I would...
22 May 2010 by Sumit_Ghosh
I am working on a project where we have to create a video chat application, it will work as a P2P application like skype or msn. I want to know what should be the best technology stack for this. How should I proceed for this part. Should I use DirectShow or any custom codec?Any ideas or...
21 May 2010 by @Intersect☺™
go through this for a basic details.http://www.inversereality.org/tutorials/sound%20programming/soundblaster16.html[^]
25 May 2010 by zlo2107
Does anyone know a component for C++ builder 2010 which enables reading MP3 tags? Or a library working in 2010 version?
25 May 2010 by Christian Graus
There's tons of code on the web, I found some with a search engine a decade or so ago. Some mp3s store them uncompressed, those are trivial to read. The compressed ones are just a little harder. Read the format, and write the code, it's not hard.
2 Jun 2010 by vinodkalanji87
I need to create a FireFox plugin to enable the browser to playback content encoded using the H.264 standard. The plugin will register the codec in such a way that when an HTML5 tag that require H.264 playback is detected the H.264 codec installed on Windows7 will be called. I am new to plugin...
30 May 2010 by Darkcharm
I don't know how to get the device-ID of the microphone or the line-in. I'm doing something for a guitar player/singer, they need to play the guitar and sing at the same time.
31 May 2010 by Darkcharm
I give up ! WaveIn Functions are not what I need !Go to have a death ,MS!
2 Jun 2010 by vinodkalanji87
Windows 7 has a built in codec to play h.264 standard videos. I want to call that codec through JavaScript for one of my application development. Is it possible to do that?Thanks.
2 Jun 2010 by athalon
Hi, I am currently doing video scaler project, in which I have to upscalce the PAL and NTSC videos to HDTV videos, I have chosen bicubic interpolation algorithm[^] for this. But I am finding difficulty in selecting the 16 neighbouring pixels for interpolation (especially the border...
5 Jun 2010 by yales
I have a 5.1 sound card and can change each output channel volume (rear, front, subwoofer etc.) by volume control at system tray. I'm developing a sound application in C++ and I want to change each channel volume inside my application like Winamp changes wave volume and I can see it at...
8 Jun 2010 by CPallini
In my "Plain C Resampling DLL", following Libor Tinka's ("Image Resizing - outperform GDI+") approach, I discarded the out-of-border contributions in the weighted sum, i.e. something like:for (j = left; j= iw) continue; /* HERE out-of border...
11 Jun 2010 by DeepOceans
Hi,I am in search for an algorithm or code for determining or extracting beats/tempo from an audio track. I urgent need it for iPhone application development.Please help ASAP.Rabia
18 Jun 2010 by GPUToaster™
18 Jun 2010 by GPUToaster™
As per my knowledge, writing an ActiveX control would grant you complete access to Win7 system files.
18 Jun 2010 by Christian Graus
You don't 'call a codec' not even in C++. You play a video and the codec gets used as needed. Use Windows Media Player as a control, and you'll find that it will play the files fine. Of course, it's a bit bizarre that you'd write a website that only works on Weven.
18 Jun 2010 by nguyenvanven
I need to set volume of a device, I open and play it with MCI command message. I want to study about MCI, but I do not have a book about it. MSDN is not enough.
18 Jun 2010 by Henry Minute
Take a look at this[^].Pay particular attention to the sentence So I dug deeper, and discovered that you can't set the volume of CD playback via MCI.
24 Jun 2010 by engineer27
I found this paper helpful from an algorithmic point of view. Setting the thresholds is a matter of taste or intent, rather than a science. I found that by increasing the window size (to 5 or 7 samples) made the algorithm slightly more robust.
28 Jun 2010 by Rehman1978
Hi ,i am a student of Mobile Augmented reality using windows mobile.i want to capture live video from mobile camera and then use it for Tracking. Can you please shere with me any simple code example which captures from windows mobile camera and display the live video on...
28 Jun 2010 by GPUToaster™
There's a very nice article similar to your problem. Just read it. The Link is : Creating Custom DirectShow SampleGrabber Filter for Windows Mobile[^]
11 Jul 2010 by Abhinav S
See here[^].
31 Aug 2010 by alabal
HelloI have seen you'r question about asio in the forumI am also writing a little soft to play MIDI with winapi : winmm.dllBecause of latency when playing , i would like to send MIDI OutMessage using winmm.dll and ASIODo you have a solution to make that works...
31 Aug 2010 by Richard MacCutchan
Quote "I have seen you'r question about asio in the forum".Who is this directed at? There are over 7,000,000 members here, 22,467 online at this moment. Please reply directly to the message you saw.
31 Aug 2010 by Sandeep Mewara
It looks like you want to ask this question to an author related to his/her article. I would suggest you to please use the forum present at the end of the article in order to reach author and get quick response. Rarely you will find authors reading this forum. Please post the same at the...
27 Sep 2010 by Young J. PARK
Dear,In this case, you have to drop lower byte of 16bit PCM sample. Also this is related with endian.
26 Aug 2011 by Dave Kreskowiak
Monitoring that is driver specific, if it's supported at all. Not all audio cards support reporting jack status.There is also no standard interface to check for that or get notifications for it. You'd have to write code specific to the audio driver to get any kind of notification and...
17 Oct 2011 by Jackie0100
Hi every onethanks for all yours help in the past but yet again i need some help.as i've before have posted about here am i making a IM-chat server and chat client and i now want to add webcam/video/voice chat to my application now.i've already found a way to add webcam capture by...
19 Mar 2012 by Manish Kumar Namdev
Hello Friends,I'm using Silverlight to record an audio in .wav format and to store.When I'm using SaveFileDialog Box then it save the file.Here is the following code.Stream stream = saveFileDialog.OpenFile(); ...
6 Jan 2012 by donaldrichardson
Silverlight has no direct access to the users machine like your example to the "E" drive. If you want to store on the machine look at something called isolated storage within the silverlight paradigm.Its a small amount of space accessible by silverlight code.
16 Jan 2012 by chaiein
How to play and record sounds[^]I feel this link helps u too.
16 Jan 2012 by Satheesh1546
Hi,You have to use Direct Sound, please google it to learn the basics, and try to use it.Thanks
11 Feb 2012 by dervishk
I've looked for a long time, but I can't seem to find any answer. I've accomplished something on After Effects, but it's not cutting it, so I'm thinking programming it myself would be the best. Thing is, I have no idea how.I want to have a visualizer that analyzes the spectrum of the input...
11 Feb 2012 by Sergey Alexandrovich Kryukov
Please see my comment to the question.As you did not specify platform, computer language, the goal of your activity, requirements and other specific detail, the answer could only be as general as this question.Look here:http://bit.ly/yUbLV1[^],http://bit.ly/yzoyMk[^].Besides, you...
19 Mar 2012 by Julien Villers
Silverlight in 'normal mode' has no access to the local filesystem. Silverlight 5 using elevated priviledges has full access to the file system (but some .NET parts are still missing, like DriveInfo).So if you really want to have this kind of direct access, you'll need to enable elevated...
21 Mar 2012 by MKHAAR
Am working on a project Which I'll need to share my desktop by streaming it as video / audio live, i need an algorithms, past projects, and links regarding that matter. Please Help
21 Mar 2012 by Rahul Rajat Singh
You can do this by using VLC player. since you want to do it in code then I suggest try libvlc and it could be done. check this for the discussion streaming desktop[^]
4 Sep 2012 by Joan M
Take a look at this article:DirectX.Capture Class Library[^]And those other 3:Audio Capture with DirectShow - Part 1[^]Audio Capture with DirectShow - Part 2[^]Audio Capture with DirectShow - Part 3[^]Good luck.
20 Jan 2013 by satendra K
Hi,What is stutter mode in audio?How we can not that audio is going in stutter mode and coming back from it?please reply.--Satendra
15 Sep 2013 by Hellothi11
Hi every one,I tried to decode MTS file as mpeg2 transport stream to extract audio information like audio codec, audio channel but I can't.From here: http://en.wikipedia.org/wiki/MPEG_transport_stream, I read each byte and get all packet data such as: PID, Adaptation field, payload data but...
18 Sep 2013 by Hellothi11
I tried but the codes is very big :(, but thank you
1 Jan 2014 by Member 10490344
Hi..Did you succeeded with that project ? i have to do exactly same thing for my faculty and i am stuck... Can you please help me ?
20 Jan 2015 by SohaibX
Hi, I'm trying to using the embedded window media player in MVC to play .wav files.I'm pretty much succeeded in playing all the other formats but somehow .wav files (which i actually need ) are messing it up and WMP is not playing them below is my code. In View
4 Jun 2015 by Candacelom0
Hey, you also get your desired photos, music and other stuffs deleted accidentally? Last Friday, I also mistakenly deleted some camera memory card photos and documents and felt depressing for a long time. But, fortunately, I did not give up and tried many deleted data recovery solutions online...
29 Jun 2015 by OriginalGriff
Basically, you can't.Audio files are just that: files. And if one app can read a file, then any app can read the file. And if you can read it, you can access the data it contains, which means you can copy it. Even if you couldn't read it directly, it's easy enough to "grab" audio data - the...
9 Sep 2015 by alfonso27
The best thing is to go ahead and try with a read only data recovery software.If the software can't recover your files you should contact a local data recovery expert
16 May 2016 by Eranga Dayarathne
I have Created audio and video capture method and Save thee two file in to my location.after these two file merge in to one avi format file.in the final output file audio run first and video take delay. how to fix it. I used ffmpeg.exe for merge.are there many system for capture audio and...
18 Apr 2017 by Atakutabrak
I build project with video Imports Microsoft.DirectX.AudioVideoPlayback when developing I can play video why in the client video cannot played? I get this error in client: "Unhandled exception has occurred in your application. If you click Continue. the application will ignore this error and...
11 Jul 2017 by Ahmad_Mustafa
use this proc.StartInfo.Arguments = string.Format("-i {0} -i {1} -acodec copy -vcodec copy -map 0:0 -map 0:1 {2}", Wavefile, video1, strResult);
3 Jan 2018 by Richard MacCutchan
See Code Project Quick Answers FAQ[^].
8 Nov 2010 by dolhaig
How to Resume the User's music after we played a video or audio from our Silverlight/XNA WP7 Application.
22 Apr 2014 by Banjoo
Stream TCP Audio data (Voice Chat over IP)
21 Jun 2010 by Kubajzz
How to avoid performance problems when capturing audio only (or video only)
18 Jun 2012 by Petr Ivankov
Applications of abstract math theories to practice
13 Mar 2016 by Maxim Komlev
Experiment of Video Transcoding and Streaming on the fly to all major internet browsers (just to video tag) without Flash or Silverlight
28 May 2010 by Dylan Morley
Sound Visualizer[^]Wow, top hit is this site!
7 Jun 2010 by Radhakrishnan G.
HiThis link may be usefullhttp://msdn.microsoft.com/en-us/library/dd756706%28v=VS.85%29.aspx[^]RegardsRadhakrishnan G.
14 Jun 2010 by vinodkalanji87
Hi all,How to ensure that whether a given video is of H.264 standard or not? Is it possible to do it with file extension?Thanks....
15 Jun 2010 by takaza
Hi everybody! I am interested in creating a P2P voice over WLAN application (VOIP) on PDA wm6.5. It should be possible to talk on WLAN (no server), like Skype. I have a problem with class library (.NET) of window mobile, does it support VOIP, I can't find it?Please help me with...
25 Nov 2010 by Tim Smithson
Hi,I am trying to create an application to stream audio from one PC to another using the RTP protocol. I was wondering whether this is even possible, or whether this is the best way to stream audio within a LAN?I have read through this article...
1 Jun 2011 by XtremLucky
Hey EveryOne ,I want to embed( Vlc Player - coz is the best for running all kinda Audio/Video format out there ). But I am not able to progress any way on these lines .I have check out videolan forums , found one article ( but was out of date ) ,Now , any how have found out that vlcLib.dll...
11 Feb 2015 by leshkoapps
How you can use AVAssetResourceLoader and AVPlayer in your apps
25 Aug 2011 by faifai2
Hi everybody!I would like to know how to detect the removal of a headset device. When the headset device is unplugged I want to stop the currently running video. Does anybody know how to do that?I'm programming in VB.net, but any examples on how to achieve this are welcome.Thanks for...
18 Apr 2013 by JL_Coder
Well, I am developing a virtual classroom i.e. Online classroom, It is a website which provides faculties and students an interactive way of learning. I am almost done just I am stuck with this video conferencing module. I am using ASP.NET C#. I have searched a lot for this. Some information I...
1 Jun 2010 by Darkcharm
I have tried a lot but unable to find the resolution. Need suggestion. Earlier, I asked about waveIn and something, but I found it is not what I actually needed.The most important problem is related to playblack. The application needs to record the MIC-IN and LINE-IN the same time and...
1 Jun 2011 by ambarishtv
you can emmeded VLC Player in winforms via vlcActivex control How to embed VLC control in c#.net windows application[^]
17 Apr 2013 by Vani Kulkarni
Take a look at following links:Chat Application using Web services in C#[^]How to create a video chat application in C#.Net?[^]how-to-work-with-videos-in-asp-net[^]video-streaming-to-a-client-app-using-asp-net-web-api[^]Video+Chat+application+in+ASP+net+using+C+[^]
5 Jun 2011 by XtremLucky
Yeap ! I did follow the steps given @ How to embed VLC control in c#.net windows applicationand its working !! Thanks alot !! BUT BUT BUT My applications .exe does not work on the machine that has no vlc Installed !.Please Help !!I want to embed an independent vlc player into my...
15 Mar 2010 by saeed2502
Hi dear erici used your source code in my project and finally i met an unknown state in adjustvolumeinplace().as I explain, when my code rich to this function, the program enter into a for loop and by the way, it doesn't rich to audiofile.close();so, my mixed file is maked but still in use...
25 Jun 2012 by vshake
Hi Jackie,Did you ever have any success with your webcam/video/voice streaming over internet project? I'm trying to leverage the same technologies but I'm finding it very hard to locate people with good experience.Thanks
23 May 2010 by Christian Graus
Why does everyone want to reinvent the wheel, and why do they employ people who have no idea to do the task they have been given ?Why would you use a custom codec ? DirectX seems like an obvious choice. However, I thought WMP can be pointed to a video stream over the web, so you could use...
28 May 2010 by subramanya2
Hi,I am new to this forum. I need help in creating a sound visualizer for my Media Player developed using MCI commands. Can you please help me with this. It's urgent. Thanks in advance.
28 May 2010 by subramanya2
Hello Smithers.If my explanation was very less, ask for more details i ll give you but anybody in this world knows how to google around for some details. But when googling around doesn help we try to approach masters like Dylan. But instead of asking for more details he just showed how to google...
4 Sep 2012 by weirdProgrammer-2
Hello All,I have just started programming a bit in directshow a few months ago.I was hoping to design an application where I could record whatever is being output on my sound card using directshow. Is it possible at all? Preferably, I would like the data to be stored into an array...