HiTry it:$ ffmpeg -s 352x288 -i foreman_cif_frame_0.yuv f.pngffmpeg version N-46810-g7750c48 Copyright (c) 2000-2012 the FFmpeg developers built on Apr 21 2013 11:12:24 with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5) configuration: --enable-gpl --enable-libx264 --enable-libmp3lame ...

C++

ffmpeg

media

Amerge filter in ffmpeg with C/C++

14 Jul 2014 by nv3

The problem seems to be that you don't have a clear idea what it means to "merge" two audio streams. What you probably mean is to mix both audio signals in a way that an audio mixer would do. For that to be possible, the samples of both streams must be taken at the same points in time, i.e. the...

C++

ffmpeg

How Can I Get File Is Uploaded Or Not

18 Dec 2015 by Jochen Arndt

Your FTP server should know which files are actually being uploaded.A good implemented server would also lock the file even for reading while the upload is in progress. Then your service might detect the new file but will be not be able to open it.If there is no read lock, there should...

ffmpeg

Opencv_ffmpeg module crash (IP camera)

27 Nov 2016 by Member 12761317

I'm using IP webcam android app(It converts mobile camera into IP web camera). I'm running below code in Visual Studio 2015 with OpenCV 3.1. VideoCapture cap; Mat img; cap.open("http://192.168.0.101:8080/video?x.mjpeg"); while(waitKey(33)!=27) { try{ ...

C++

ffmpeg

OpenCV

970530 - how to decode by GPU in ffmpeg

20 Aug 2018 by Jochen Arndt

Start by reading HWAccelIntro – FFmpeg[^]. For usage with the API check if an appropriate decoder is available and select that for decoding (requires that the library has been built with support for that decoder): // C/C++ example to use the DXVA2 decoder AVCodec* decoder =...

ffmpeg

video

How to Use FFmpeg Filters to Jazz Up Your Audio and Video Files

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

C++ mp3 decoding library

23 Mar 2012 by CPallini

It looks[^] you may actually (cross) compile ffmpeg.

C++

ffmpeg

MP3

Kinect C# Basketball shooting game ............

8 Feb 2013 by OriginalGriff

Google is your friend: Be nice and visit him often. He can answer questions a lot more quickly than posting them here...A very quick search using part of your question as the search term gave nearly 6 million hits: sample kinect game program using C#[^]In future, please try to do at...

ffmpeg

Convert bmp to yuv and save

21 Apr 2013 by merano

1. Please format your Source with code tag like thisFILE* fp=fopen("aha.yuv","w");if(!fp) return NULL;fwrite(outPic->data[0],nbytes,1,fp); fwrite(outBuffer,nbytes,1,fp);fclose(fp);2. You should use fopen() in binary mode3. Can´t see writing you Fileheader or Bitmap-Header,...

C++

ffmpeg

encoding

the color format convert

11 Nov 2013 by chinahyin

nRet = av_image_alloc(pSrcBuff,nLines,nSrcWidth,nSrcHeight,AV_PIX_FMT_YUV420P,16) ; nDstBuffLen = av_image_alloc(pDstBuff,nDstLines,nSrcWidth,nSrcHeight,AV_PIX_FMT_RGB24,1) ; if (nDstBuffLen

C++

ffmpeg

media

accessing webcam in ffmpeg in C++

12 Mar 2014 by godspeed123

Hi I have been looking through the ffmpeg documentation and samples provided with the library and I can not figure out how to acquire a live stream from a webcam, I know it is possible, but can not figure out how to do this.Does anyone have a tutorial or some sample code to access a...

C++

ffmpeg

OpenCV and FFMPEG connection

12 Mar 2014 by User 59241

Having read your other question on a related matter I will answer here. You need to convert a cv image (cv::Mat) to an AVFrame.This should get you well and truly...

C++

ffmpeg

OpenCV

FFMPEG encodin audio from PCM to AAC in C++

17 Jun 2014 by Sergey Alexandrovich Kryukov

I have one specific advice for you: build the utility ffmpeg.exe and give it the command-line arguments likeffmpeg -i someInputFile.wav outputFile.aacRun it under the debugger and see what happens. This is a great library and utility, but it's very big and have some legacy "noise" in it, due...

C++

ffmpeg

How do I make a C# win form program that breaks a video down to frames, then put those frames back together to make a video?

30 Jul 2015 by CHill60

If you can't understand the code presented we are unlikely to be able to help you much in a Quick Answers Forum! However - your first link - you can put the code wherever you like. A button click event would be appropriate, amongst other options.The missing reference on your 2nd link is...

C#5.0

frame

ffmpeg

Error when I use aforge FFMPEG

10 Sep 2016 by Richard MacCutchan

See VideoFileReader Class[^] for instructions on installation and usage.

ffmpeg

webcam

How to create video streaming for local network using C#

20 Jul 2018 by Gerry Schmitz

How to webcast using Microsoft Expression Encoder[^]

Ffmpeg not creating file running through .NET like when in CMD

16 Aug 2018 by Member 13948830

This is what I did to finally get it to work var processStartInfo = new ProcessStartInfo(@"C:\FFmpeg\bin\ffmpeg.exe"); processStartInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden; ...

ffmpeg

cmd

video

H264/MP4 live stream from ffmpeg does not work in browser

20 Sep 2018 by paunescuionica

I cannot visualize a H264/MP4 stream generated by ffmpeg in Chrome, IE, Edge. It works only in Firefox. My testing environment is Windows 10, all updates done, all browsers up to date. What I have tried: I have a source MJPEG stream, which I need to transcode to H264/MP4 and show it in...

How I cam create video from sequence images

26 Mar 2020 by Maciej Los

Please, take a look at answered question: Converting Images into Video using C#[^] You can also be interested in this project: GitHub - mmaitre314/PictureMovie: Create MP4 videos from JPG/PNG/GIF/BMP images[^] Other links:...

image-processing

ffmpeg

Vb.net aforge video capture - memory is consumed and the camera freezes

23 Aug 2020 by Hank Williams

Have you tried using the Aforge VideoSourcePlayer control instead of the picturebox control? I think the VideoSourcePlayer control is more suited to your needs.

How to Compile FFmpeg 6.0 in Linux and What New Things Can Be Done With It

8 Mar 2023 by V. Subhash

How to get compile the latest FFmpeg source code and try out some new features

Linux

ffmpeg

Bash

How to build FFmpeg 7 from source and what you can do with its new features

U 12 Apr 2024 by V. Subhash

Compile FFmpeg v7.0 CLI from source and check out some of its new features

Bash

ffmpeg

multimedia

C++ mp3 decoding library

24 Mar 2012 by vonpik

What exactly you want to do with decoded file? a) If you want to play it, use irrKlang. I used it, is easy to understand. There are C++ and C# bindings. It also support many of files (*.mp3, *.ogg, *.wav, *.flac, *.ogg even *.mod (amiga modules). irrKlang have to licenses, free and...

C++

ffmpeg

MP3

C++ mp3 decoding library

24 Mar 2012 by Sergey Chepurin

How about BASS audio library [^]"BASS is an audio library for use in software on several platforms. Its purpose is to provide developers with powerful and efficient sample, stream (MP3, MP2, MP1, OGG, WAV, AIFF, custom generated, and more via OS codecs and add-ons), MOD music (XM, IT, S3M,...

C++

ffmpeg

MP3

Streaming webcam over RTSP

29 Mar 2012 by waterduck

Hello thereI'm looking for a solution for streaming my webcam over rtsp and transcodingI tried VLC for this but it doesnt support the TCP transport, only UDPThen I tried FFmpeg. It transcodes well but fails to stream webcamSo now I'm looking for RTSP server which supports TCP transport...

streaming

ffmpeg

webcam

ffmpeg adding watermark to video

8 May 2012 by AR1988

HiDoes anyone know how to use the ffmpeg tool to add a watermark to a video,if anyone does please I need the syntax and the resources required if addition dlls are to be introduced.Thanks in advance.

WinForms

ffmpeg

ffmpeg adding watermark to video

8 May 2012 by Manfred Rudolf Bihy

Here is a video that hows you how to do it: Add a Watermark to a Video with ffmpeg[^]. This video shows how to do it under unix. If you're on windows just vhook the watermark.dll instead of watermark.so.Please always try something first!Regards,Manfred

WinForms

ffmpeg

Streaming webcam over RTSP

2 Jun 2012 by magic.on

VLC steams with RTSP, check some sites on google "stream webcam vlc"

streaming

ffmpeg

webcam

MCI error message 277 on some files

22 Aug 2012 by NeonMika

Hi there!I download and convert a audio file from the web with ffmpeg and convert them to mp3 with "-acodec libmp3lame -ab 128k" using a selfwritten wrapper in C#. This file can be perfectly played in Winamp for example.But now I want to play this file in my C# application with MFC and the...

ffmpeg

audio

RTSP re streaming (converting) HLS streaming

20 Oct 2012 by Eldor Primov

Hi communityIs it possible to re stream RTSP to HTTP streaming? here http://superuser.com/questions/58722/how-do-i-configure-ffserverffmpeg-to-fetch-a-live-stream-in-one-format-and-outp it says to use ffmpeg and mplayer to receive and save rtsp then stream to http, but not so clear. can...

ffmpeg

HTTP

how to switch between multiple video streaming?

5 Dec 2012 by Eldor Primov

Hello community,I am struggling with switching between multiple live streams. For example, I have five live streaming servers streaming(HTTP or RTSP) and I want to put some broker between those (five) streaming sources and destination so that output to the destination would be one video...

HTTP

ffmpeg

video

How to get video lenght itself at the time of uploading

12 Mar 2013 by rocmehra

Hi,I have used the ffmpeg to get the video duration. I want that whenever i browse a file and save then itself save the duration of file in PHP.

PHP

ffmpeg

video

Create ffmpeg.c using vc++

14 Mar 2013 by OSHO580

Hello friends,I want to develop wrapper class in VC++ 2010 of ffmpeg.c. is it possible or not . If it possible please guide me how can i start to do this work. I have already started but i got lot of linker error. I have also mentioned extern "C" for header file . I have also included all lib...

VisualC++

ffmpeg

Convert bmp to yuv and save

20 Apr 2013 by liaoyuandeyehuo

I use this way to convert bitmap to yuv Save bitmap to video (libavcodec ffmpeg) and then save the buffer like this: FILE* fp=fopen("aha.yuv","w"); if(!fp) return NULL; fwrite(outPic->data[0],nbytes,1,fp); fwrite(outBuffer,nbytes,1,fp); fclose(fp); but it has only several lines.All most all of...

C++

ffmpeg

encoding

opening jpg image after saving from ffmpeg not working

30 May 2013 by link_that

In my project I am saving videos, converting formats to .swf using ffmpeg. Converting and saving the videos is working fine, but I have a problem with creating the thumbnails. It saves a "picture.jpg" but there is no image. looking at the thumbnail its only got the normal photoviewer sign which...

ASP.NET

ffmpeg

opening jpg image after saving from ffmpeg not working

28 May 2013 by Sergey Alexandrovich Kryukov

This is simple, but what you really need to is read FFmpeg command-line help paying more attention. It is not as simple as it may look at first glance:http://www.ffmpeg.org/ffmpeg.html[^].—SA

ASP.NET

ffmpeg

how can I learn directshow and ffmepg

25 Jul 2013 by hbbiao

looking for advice on how to learn directshow and ffmpeg.i have compiled some projects available on the internet ,but i still can't quite understand ,especially how to syncronize audio and video ,is timestamp contained in the file container like avi, mpeg,or included somewhere else ,because i...

ffmpeg

directshow

Encode Playback device capture audio data and write an mp3 file

15 Oct 2013 by CodingHell

I'm working on a project in which I'll have to encode my audio data.I can capture the audio and create a .wav file but I want to compress it and make it an mp3 or .aac file.I'm using ffmpeg for encoding.If someone has done this.. Please help me.If necessary I'll post my code and...

How may I free pkt in an ffmpeg write frame method

4 Mar 2014 by radnix

Well, I did finally get it working and will post my particular solution here with the hope it may help others. Oh, almost forgot. If you have a suggestion for change to this code, please do:static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx,...

C++

ffmpeg

accessing webcam in ffmpeg in C++

12 Mar 2014 by Sergey Alexandrovich Kryukov

There are different aspects of this problems. Pretty much everything is described here:https://trac.ffmpeg.org/wiki/StreamingGuide[^],https://trac.ffmpeg.org/wiki/How%20to%20capture%20a%20webcam%20input[^],https://trac.ffmpeg.org/wiki/Streaming%20media%20with%20ffserver[^],see also:...

C++

ffmpeg

OpenCV and FFMPEG connection

12 Mar 2014 by godspeed123

HiI accessed my webcam using OpenCV, and I am getting Mat of the RAW image, I want to pass this into ffmpeg to encode the stream, how do I go about doing this?Thanks in advance.

C++

ffmpeg

OpenCV

image becomes vertical lines after RGB -> YUV420 back to -> RGB conversion

14 Mar 2014 by godspeed123

HiI have a RGB24 image which I am saved on file, I am using sws_scale to convert it to YUV420 and then I wanted to verify if the conversion was done correctly so I tried converting it back to RGB24 to view the results. And all I see is vertical white and black bars. What am I doint...

C++

ffmpeg

Trying to setup MJPEG encoder in ffmpeg in C++

15 Mar 2014 by SoMad

Try using PIX_FMT_YUVJ422P instead of PIX_FMT_YUV422P.I found that in this[^] forum question. That question and answer is from Oct. 2012, so things could have changed.If that does not solve your problem, I noticed the following comment in pixfmt.h:AV_PIX_FMT_YUVJ422P, ///

C++

ffmpeg

Trying to setup MJPEG encoder in ffmpeg in C++

14 Mar 2014 by godspeed123

Hi ThereI am trying to get MJPG encoding working, I have AV_CODEC_ID_MPEG1VIDEO working, but when I switched to AV_CODEC_ID_MJPEG I get an error -22The code fails on the last part with "could not open codec".Any help would be greatly appreciated!This is the code:AVCodecID...

C++

ffmpeg

FFMPEG: Once encoded data, how to send out via RTP/UDP via FFMPEG

16 Mar 2014 by godspeed123

Hi ThereI have a h264 encoded stream in ffmpeg, but i want to transfer it out via RTSP, RTP/UDP, I know FFMPEG has the capability but I dont know where to start. I there a C++ tutorial showing this, or some sample code to start with?Thanks in advance!

C++

ffmpeg

use of av_sdp_create from an encode AVPacket

11 Apr 2014 by godspeed123

HiI was able to encode a raw image to h264, and now I want to be able to transmit it to RTSP using live555. I want to create a sdp so I can put it into live555, so after a bunch of searching I found there is a function av_sdp_create, but I dont know how to use it... The first argument is...

C++

ffmpeg

h264 compressed data, how to extract PPS/SPS

20 Apr 2014 by godspeed123

Hi ThereI have used ffmpeg to compress raw data to h264. Few questions, when the image is compressed is the PPS/SPS going to be at the front of each compressed frame? I see that there is a 0001 in front of the data, is there some way of passing the frame to a h264 dump application to...

C++

ffmpeg

how to put a raw char * to AVPacket

20 Apr 2014 by godspeed123

HiI have a compressed image stored in a char * and I want to put it back to an AVPacket so that I can put it into a ffmpeg decoder. Can someone show how to do this? Any sample or tutorial would be greatly appreciated.Thanks in advance

C++

ffmpeg

how to put a raw char * to AVPacket

24 Apr 2014 by Rage

What kind of "compressed image" ? Have a look at this[^] thread.

C++

ffmpeg

A video file was not opened yet

21 May 2014 by Pavan Kumar

While recording video by ffmpeg VideoFileWriter class, i am getting error like 'A video file was not opened yet'here is my code : private void butStart_Click(object sender, EventArgs e) { try { FinalVideo = new...

ffmpeg

recorder

video

image becomes vertical lines after RGB -> YUV420 back to -> RGB conversion

30 May 2014 by Ha Viet

At least, you have wrong typo atsws_scale(sws_ctx, frame2->data, ..)You need to change it tosws_scale(final_sws_ctx, frame2->data, ..)

C++

ffmpeg

Accessing Microphone with FFMPEG and C++

7 Jun 2014 by godspeed123

HiI have access to a webcam through FFMPEG but now I want to grab the audio using FFMPEG and C++. Is there an example or tutorial on how to do this, and make sure it syncs up with the video?Thanks in advance

C++

ffmpeg

How to get images from video file ( mjpeg) ?

12 Jun 2014 by Vi(ky

Hi I want create streaming server to stream mjpeg file. I get the help of this project[^]Now, I want to create images from a video file ( mjpeg). By using ffmpeg I am able to get images from video file like mp4, flv, wmv & successfully stream the file. The command that I using for...

C#5.0

ffmpeg

FFMPEG encodin audio from PCM to AAC in C++

17 Jun 2014 by godspeed123

Hi ThereI am looking for some code that will allow me to to convert PM audio to AAC. I have written an attempt at it but I keep getting error -22 when trying to do the econding. Code is written below. Any help would be greatly appreciated!while( res = av_read_frame( pFormatCtx,...

C++

ffmpeg

FFMPEG encodin audio from PCM to AAC in C++

17 Jun 2014 by KarstenK

you have better chances by searching ffmpeg contacts direct.Looks like here is some sample code available.

C++

ffmpeg

Permission denied error while converting .mov to .flv using ffmpeg in C# application

6 Jul 2014 by Member 10266297

i am using ffmpeg to convert .MOV video to .flv and i get the below error knowing that i am sure that there is a permission because i extract image from video to the same directory in the same screen :ffmpeg.StartInfo.Arguments = "ffmpeg -i " + file + " -ar 22050 -ab 32 -f flv -s 320×240...

ASP.NET

ffmpeg

16bit PCM streams merge?

9 Jul 2014 by godspeed123

Hi ThereI am using ffmpeg and I am able to receive PCM audio packets from 3 different mics to one program, I want to be able to merge the audio and then save it to file, but I dont know how to merge these audio inputs, I am receiving packets from each mic one at a time and I dont have a...

C++

ffmpeg

16bit PCM streams merge?

10 Jul 2014 by Albert Holguin

Assuming your input is synched in time and you're using the same PCM sampling on all channels... just make a "mixer"...http://stackoverflow.com/questions/5126169/programmatically-merging-two-pieces-of-audio/5126209#5126209[^]That's one example, but I'm sure you can find a handful of examples...

C++

ffmpeg

ffmpeg audio pts/dts C++

10 Jul 2014 by godspeed123

Hi ThereI am trying to understand the pts value in an audio encoded packet in ffmpeg.I checked my timebase to be 1/44100and some pts values : 70754080000, 70759090000, back to back packet pts values.I dont know how to convert that to real time. I would imagine it having...

C++

ffmpeg

ffmpeg audio pts/dts C++

11 Jul 2014 by KarstenK

read the avformat.h there stands:/* AVPacket.pts, AVPacket.dts and AVPacket.duration timing information will be * set if known. They may also be unset (i.e. AV_NOPTS_VALUE for * pts/dts, 0 for duration) if the stream does not provide them. The timing * information will be in...

C++

ffmpeg

Amerge filter in ffmpeg with C/C++

14 Jul 2014 by godspeed123

Hi ThereI want to merge 2 audio streams together in C/C++ and I think I have to user amerge to do so. I have the 2 audio streams decoded in 16 bit PCM format and I want to merge them properly into one audio file. I looked around for amerge filter example but couldnt find any. Does anyone...

C++

ffmpeg

Hello I Need A Some Istructions To Use Ffmpeg, I Would Like A Code To Get Media File Info

16 Jul 2014 by Vlad Budeac

var player = new WindowsMediaPlayer();var clip = player.newMedia(file.FullName);lblLenght_.Text = (TimeSpan.FromSeconds(clip.duration)).ToString(); ShellFile shellFile = ShellFile.FromFilePath(file.FullName);lblFPS_.Text = (shellFile.Properties.System.Video.FrameRate.Value /...

ffmpeg

media

Hello I Need A Some Istructions To Use Ffmpeg, I Would Like A Code To Get Media File Info

16 Jul 2014 by Sergey Alexandrovich Kryukov

Do on simple step, look not at FFMPeg application, but at FFProbe. You can always download its source code and see what it does. Then, you can either start FFProbe as a separate process with appropriate command-line parameters, redirect its output stream StandardOutput (and StandardError) and...

ffmpeg

media

ffmpeg has memory leak

23 Jul 2014 by SoSoLue

I got some question, in my code,this project will get video stream from camera,and encoder with ffmpeg lib and x264,then both save in a .mp4 file, upload to rtmp server.now, when I stop get stream and encode,VS2012 show the memory leak, but it cant locate the memory leak code.can...

Convert a video from a format to another on MAC OSx using FFMPEG API

6 Aug 2014 by Aashish_stellar

Hello Guys, I am working on ffmpeg using its libraries on mac OSx. I am trying to transcode a video. For this I am using this : const char* inFileName = "C:\\abc.avi"; av_register_all(); AVFormatContext* inContainer = NULL; if(avformat_open_input(&inContainer, inFileName, NULL,...

ffmpeg

Creating a livesource audio class for live555

19 Aug 2014 by godspeed123

HiI am trying to setup live555 to stream rtsp with an ondemandserver from a microphone, but I am not sure how to do so. I have attempted to do this by overriding OnDemandServerMediaSubsession and FramedSource, but I am running into issues where I hear a bit of sound for half a second and...

C++

ffmpeg

How Do I Use Ffmpeg To Upload Video Files

24 Aug 2014 by Sergey Alexandrovich Kryukov

This approach can work, but you are not doing all appropriate steps. First of all, you need to formulate the question accurately. FFMpeg has nothing to deal with "uploading" (however, it can be very helpful for downloading files delivered through some streaming protocol, a tool which is hard to...

ASP.NET

ffmpeg

Watermark Issue FFMPEG Video

11 Sep 2014 by sunil mali

Dear All,I am trying to Compress Video using FFMPEG Library.I am Having issue in putting watermark in Video.I have boldmark command i tried for watermark. Kindly help me.Code I used so far string source = @"C:\Adstringo\AdstringoIn\source\Wildlife.mp4"; ...

C#5.0

ASP.NET

ffmpeg

How to achieve playback of DirectShow filter at difference rates

26 Jul 2015 by parisonj

Hi,Does anyone have any good tips or practical experience on controlling the playback rate of video/audio streams?Using SetRate() doesn't seem to give me reliable (smooth) results, certainly above values of 2.0, and often locks up completely.Ideally, I need to typical rates of x1, x2,...

C++

ffmpeg

directshow

How do I make a C# win form program that breaks a video down to frames, then put those frames back together to make a video?

30 Jul 2015 by Atom Scott

First, I'm fairly new to see sharp so I'm looking for a thorough and easy to understand answer.How do I make a C# win form program that breaks a video down to frames, then puts those frames back together to make a video?I also want to be able to select which frames to extract by setting an...

C#5.0

frame

ffmpeg

MP4 live stream from individual images

23 Nov 2015 by paunescuionica

I'm using an API which gives live images from different sources (mainly from IP cameras). So I have few jpg images coming in each second.My requirement is to produce a H.264 encoded MP4 live stream, that will be displayed in a browser (in HTML5 element).So, transform this live...

ffmpeg

streaming

MP4 live stream from individual images

23 Nov 2015 by Sergey Alexandrovich Kryukov

Please see my comment to the question. I cannot tell you for sure what to choose, not sure myself, but I can give your some words in favor or FFMpeg. I did not use Media Foundation, but I often heard the opinions that FFMpeg offers a much broader set of features compared to Media...

ffmpeg

streaming

How Can I Get File Is Uploaded Or Not

18 Dec 2015 by Member 11324668

Hi i have a simple question, i have window service that run in specific interval.Now i have one issue when user upload a big file and during same time window service run and convert that file to mp4 using ffmpeg but original video is not uploaded completely. therefor converted video does not...

ffmpeg

adaptive compression with ffmpeg

26 Jan 2016 by paunescuionica

I'm currently developing an application which will enable visualizing images from different sources (mostly IP cameras) in browser (in a HTML5 video element). The UI will allow for matrix view so, normally 16 or more cameras will be displayed at the same time.From cameras I get MJPEG streams...

streaming

ffmpeg

encoding

Openh264 - benableframeskip=0, bitrate can't be controlled

9 Apr 2016 by Prakash1206

there are a lot of questions asked regarding opencv + H.264 but none of them gave detailed explanation.i am using openh264(openh264-1.4.0-win32msvc.dll) along with opencv 3.1(custom build with cmake having ffmpeg enabled) in visual studio, i wanted to save video coming from webcam in mp4...

How to start audio and video capture /merge audio and video using aforge ffmpeg in C#

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...

FFMPEG write header error

9 Jun 2016 by Member 11549235

Hi, I'm working on a FFMPEg Project and trying to write a file with a stream. But when I call avformat_write_header it always throws an errr. Here's the code:AVCodecContext *codecctx; AVFormatContext *fmtctx; fmt=av_guess_format(NULL,filename,NULL); if(!fmt) printf("Das Format kann...

C++

ffmpeg

FFMPEG write header error

8 Jun 2016 by Jochen Arndt

Like Richard I do not know ffmpeg well. But the documentation for avformat_write_header[^] states for the first parameter:Quote:Media file handle, must be allocated with avformat_alloc_context(). Its oformat field must be set to the desired output format; Its pb field must be set to an...

C++

ffmpeg

FFMPEG write header error

9 Jun 2016 by Member 11549235

The Problem is i forgot to call avio_open. Now I'm trying to add a png Image to the stream, but don't know how to convert it to an useable Frame. Can you give me some hints?

C++

ffmpeg

How do I use ffplay seek after 26.5hour when the m3u8 file is big than 26.5hour

29 Aug 2016 by hansonzou

the particulars is i save a rtsp stream to ts file by ffmpeg per 10 second , it may last for a long time(more than 26.5hour), when it done, it will save a m3u8 file, after that, i use ffplay to play then m3u8 file, if i want to seek to 26.7hour , the play must be stoped. -----PTS (sec) =...

C++

ffmpeg

How do I use ffplay seek after 26.5hour when the m3u8 file is big than 26.5hour

29 Aug 2016 by KarstenK

The only way I see is to split the files in parts with playtime less but roughly the 26.5 h and than compute the offset and seek the correct subfile.

C++

ffmpeg

Ioexception on watermarking video on android

17 Sep 2016 by Stefan Ionescu Freelancing

I am trying to programmatically watermark a video in Android using WritingMinds' Ffmpeg library from Github :https://github.com/WritingMinds/ffmpeg-android-javaI did all they said in their documentation and imported the library in Android Studio.Still, it gives me an IOExeption with...

Android

ffmpeg

watermark

Opencv_ffmpeg module crash (IP camera)

27 Nov 2016 by Arthur V. Ratz

Normally, in this code, at the beginning, you declare two variables: VideoCapture cap; Mat img; You normally open the camera by invoking cap.open("http://192.168.0.101:8080/video?x.mjpeg"); method and then perform a loop to retrieve each frame from the camera device storing them into a frame...

C++

ffmpeg

OpenCV

Audio decode to noise on iOS but ok on windows

30 Nov 2016 by Charly LEE

the input mp3 is single channel with 32000 sample rate, 16bit signed.I am using ffmpeg 2.6 to decode mp3 on ios9.3.2 pad. It get white noise only. but it works on windows.I record the decoded PCM to file and use tool to play it. when I changed the bit set to 32. I can hear the original sound...

Audio decode to noise on iOS but ok on windows

30 Nov 2016 by KarstenK

the solution looks really simple. AVPacket avpkt; av_init_packet(&avpkt); // set values AFTER init avpkt.data = encode_packet->data; avpkt.size = encode_packet->data_length;I am a bit confused that your old code works on Windows. But I know that the Objective-C runtime...

Using FFMPEG in C# project

17 Mar 2017 by Ahmad_Mustafa

There is a Long process to use FFmpeg in C#. I have some Questions about it when i use it in c# project and make some software using it and give to some one all the things we install to setup Other person needs these things as well ? Is there any Other easy way to setup FFmpeg in c# Project....

How to create image from byte[] send by RTP packets

11 Jul 2017 by Member 13117475

Hi, I am working on capture images by calling RTSP service. For calling RTSP service I have created one sample application (as a client) and in that I have created socket object and call RTSP service listen method. I am also able to receive byte[] using UDP listener, but I am not able to use...

How to create image from byte[] send by RTP packets

11 Jul 2017 by KarstenK

Why are you sending TCP and receiving UDP packets??? Use TCP alsp on the receiver side. You should use the Image.Save() with a parameter to enforce jpeg. image.Save(path, ImageFormat.Jpeg); Else check for other problems, like the transmitted data and its size.

How to start audio and video capture /merge audio and video using aforge ffmpeg in C#

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);

Convert raw files to mp4 video using C++ with ffmpeg

4 Oct 2017 by KarstenK

You best start at the ffmpeg documentation site. I also like to mention the ffmpeg examples. Maybe that stackoverflow answer helps you in your problem. It is a complex library so you will have to learn a lot.

VisualC++

C++

ffmpeg

How can I catch devices using ffmpeg and C#?

26 Oct 2017 by Graeme_Grant

You want to "capture" the output? This should answer your question: Capturing console output from a .NET application (C#) - Stack Overflow[^]

ffmpeg

Ffmpeg output log in text file using C#

9 Nov 2017 by arunavachowdhury

This is a simple code to create ffmpeg log output in a file instead of console. But this code doesn't create an output log file wherein the same arrangements when used in command prompt it works. Can anybody help in this? what more needs to be done to get the output in the log file? Regards...

ffmpeg

Ffmpeg output log in text file using C#

8 Nov 2017 by Richard MacCutchan

A quick check with your debugger would show you that your parameters are wrong as you have unescaped backslashes in your strings. So the code: string fullPath = "d:"; string fileName= "wildlife.wmv"; string pathfile = "D:"; process.StartInfo.Arguments = "-i \"" +...

ffmpeg

Ffmpeg output log in text file using C#

9 Nov 2017 by arunavachowdhury

Tried with the above code but its not working. When we run ffmpeg with the same code we need to remove the final "\" after ffmpeglog.log to generate the log. When I am using " -i \"d:\\wildlife.wmv 2> \"D:\\ffmpeglog.log\"" The log is not generating but cannot remove the "\" from the string...

ffmpeg

How to create video using FFMPEG and C#

17 Feb 2018 by Member 13682761

hi dear, I want to create a video during 15 seconds using one picture in C#. I try a lot of way but I couldn't , if anyone has solution pleas help me. this is my code : What I have tried: using (Process p = new Process()) { p.StartInfo.UseShellExecute = false; ...

ffmpeg

video