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Video d’abeille en portrait
14 mai 2011, par
Mis à jour : Février 2012
Langue : français
Type : Video
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Using Accord.Video.FFMPEG, I get parameter is not valid exception. How to solve it ?
14 avril 2023, par Sheron BlumentalI want to extract all the frames from a mp4 video file and display them on a PictureBox.


The original code comes from this Q&A :

How to time the presentation and extraction of frames from a video file ?

The exception happens after clicking the start button on the line :


var frame = videoReader.ReadVideoFrame();


the message


System.ArgumentException
 HResult=0x80070057
 Message=Parameter is not valid.
 Source=System.Drawing
 StackTrace:
 at System.Drawing.Bitmap..ctor(Int32 width, Int32 height, PixelFormat format)
 at Accord.Video.FFMPEG.VideoFileReader.DecodeVideoFrame(BitmapData bitmapData)
 at Accord.Video.FFMPEG.VideoFileReader.readVideoFrame(Int32 frameIndex, BitmapData output)
 at Accord.Video.FFMPEG.VideoFileReader.ReadVideoFrame()
 at Extract_Frames.Form1.<getvideoframesasync>d__15.MoveNext() in D:\Csharp Projects\Extract Frames\Form1.cs:line 114
 at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
 at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
 at Extract_Frames.Form1.d__17.MoveNext() in D:\Csharp Projects\Extract Frames\Form1.cs:line 151
</getvideoframesasync>

the full code


using Accord.IO;
using Accord.Video;
using Accord.Video.FFMPEG;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Reflection.Emit;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Extract_Frames
{
 public partial class Form1 : Form
 {
 Bitmap frame = null;
 Graphics frameGraphics = null;
 bool isVideoRunning = false;
 IProgress<bitmap> videoProgress = null;
 private CancellationTokenSource cts = null;
 private readonly object syncRoot = new object();
 private static long pause = 0;
 private int frameRate = 0;
 private List<bitmap> frames = new List<bitmap>();
 string fileName;

 public Form1()
 {
 InitializeComponent();
 
 }

 private void Form1_Load(object sender, EventArgs e)
 {

 }

 private void StopPlayback(bool cancel)
 {
 lock (syncRoot)
 {
 if (cancel) cts?.Cancel();
 cts?.Dispose();
 cts = null;
 }
 }

 int counter =1;
 private void Updater(Bitmap videoFrame)
 {
 frames.Add(videoFrame);

 label1.Text = "Current Frame Number : " + counter;
 trackBar1.Value = counter;
 counter++;

 //Size size = new Size(videoFrame.Width, videoFrame.Height);
 //pictureBox1.ClientSize = size;
 using (videoFrame) frameGraphics.DrawImage(videoFrame, Point.Empty);

 pictureBox1.Invalidate();
 }

 private async Task GetVideoFramesAsync(IProgress<bitmap> updater, string fileName, int intervalMs, CancellationToken token = default)
 {
 using (var videoReader = new VideoFileReader())
 {
 if (token.IsCancellationRequested) return;
 videoReader.Open(fileName);

 videoReader.ReadVideoFrame(1);
 trackBar1.Value = 1;

 label1.Text = "Current Frame Number : " + counter.ToString();

 while (true)
 {
 if (Interlocked.Read(ref pause) == 0)
 {
 var frame = videoReader.ReadVideoFrame();

 if (token.IsCancellationRequested || frame is null) break;
 updater.Report(frame);
 }
 await Task.Delay(frameRate).ConfigureAwait(false);
 }
 }
 }

 private void trackBar2_Scroll(object sender, EventArgs e)
 {
 frameRate = trackBar2.Value / 25;
 }

 private async void buttonStart_Click(object sender, EventArgs e)
 {
 string fileName = textBox1.Text;

 if (isVideoRunning) return;
 isVideoRunning = true;

 using (var videoReader = new VideoFileReader())
 {
 videoReader.Open(fileName);
 frame = new Bitmap(videoReader.Width + 2, videoReader.Height + 2);
 trackBar1.Maximum = (int)videoReader.FrameCount;
 }

 videoProgress = new Progress<bitmap>((bitmap) => Updater(bitmap));
 cts = new CancellationTokenSource();
 pictureBox1.Image = frame;
 try
 {
 frameGraphics = Graphics.FromImage(frame);
 // Set the fame rate to 25 frames per second
 //int frameRate = 1000 / 25;
 await GetVideoFramesAsync(videoProgress, fileName, frameRate, cts.Token);
 }
 finally
 {
 frameGraphics?.Dispose();
 StopPlayback(false);
 isVideoRunning = false;
 }
 }

 private void buttonPause_Click(object sender, EventArgs e)
 {
 if (pause == 0)
 {
 buttonPause.Text = "Resume";
 Interlocked.Increment(ref pause);
 }
 else
 {
 Interlocked.Decrement(ref pause);
 buttonPause.Text = "Pause";
 }
 }

 private void buttonStop_Click(object sender, EventArgs e)
 {
 StopPlayback(true);
 }

 protected override void OnFormClosing(FormClosingEventArgs e)
 {
 if (isVideoRunning) StopPlayback(true);
 pictureBox1.Image?.Dispose();
 base.OnFormClosing(e);
 }

 private void pictureBox1_Paint(object sender, PaintEventArgs e)
 {
 ControlPaint.DrawBorder(e.Graphics, pictureBox1.ClientRectangle, Color.Red, ButtonBorderStyle.Solid);
 }

 private void trackBar1_Scroll(object sender, EventArgs e)
 {
 pictureBox1.Image = frames[trackBar1.Value];
 }

 private void button1_Click(object sender, EventArgs e)
 {
 using (OpenFileDialog openFileDialog = new OpenFileDialog())
 {
 openFileDialog.InitialDirectory = "c:\\";
 openFileDialog.Filter = "video files (*.mp4)|*.mp4|All files (*.*)|*.*";
 openFileDialog.FilterIndex = 2;
 openFileDialog.RestoreDirectory = true;

 if (openFileDialog.ShowDialog() == DialogResult.OK)
 {
 //Get the path of specified file
 textBox1.Text = openFileDialog.FileName;
 }
 }
 }
 }
}
</bitmap></bitmap></bitmap></bitmap></bitmap>

-
using Accord.Video.FFMPEG aka(AForge) give exception error paramter is not valid. how to solve it ?
12 avril 2023, par Sheron BlumentalI want to extract all the frames from a mp4 video file and display them on a pictureBox.


The exception happens after clicking the start button on the line :


var frame = videoReader.ReadVideoFrame();


the message


System.ArgumentException
 HResult=0x80070057
 Message=Parameter is not valid.
 Source=System.Drawing
 StackTrace:
 at System.Drawing.Bitmap..ctor(Int32 width, Int32 height, PixelFormat format)
 at Accord.Video.FFMPEG.VideoFileReader.DecodeVideoFrame(BitmapData bitmapData)
 at Accord.Video.FFMPEG.VideoFileReader.readVideoFrame(Int32 frameIndex, BitmapData output)
 at Accord.Video.FFMPEG.VideoFileReader.ReadVideoFrame()
 at Extract_Frames.Form1.<getvideoframesasync>d__15.MoveNext() in D:\Csharp Projects\Extract Frames\Form1.cs:line 114
 at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
 at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
 at Extract_Frames.Form1.d__17.MoveNext() in D:\Csharp Projects\Extract Frames\Form1.cs:line 151
</getvideoframesasync>

the full code


using Accord.IO;
using Accord.Video;
using Accord.Video.FFMPEG;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Reflection.Emit;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Extract_Frames
{
 public partial class Form1 : Form
 {
 Bitmap frame = null;
 Graphics frameGraphics = null;
 bool isVideoRunning = false;
 IProgress<bitmap> videoProgress = null;
 private CancellationTokenSource cts = null;
 private readonly object syncRoot = new object();
 private static long pause = 0;
 private int frameRate = 0;
 private List<bitmap> frames = new List<bitmap>();
 string fileName;

 public Form1()
 {
 InitializeComponent();
 
 }

 private void Form1_Load(object sender, EventArgs e)
 {

 }

 private void StopPlayback(bool cancel)
 {
 lock (syncRoot)
 {
 if (cancel) cts?.Cancel();
 cts?.Dispose();
 cts = null;
 }
 }

 int counter =1;
 private void Updater(Bitmap videoFrame)
 {
 frames.Add(videoFrame);

 label1.Text = "Current Frame Number : " + counter;
 trackBar1.Value = counter;
 counter++;

 //Size size = new Size(videoFrame.Width, videoFrame.Height);
 //pictureBox1.ClientSize = size;
 using (videoFrame) frameGraphics.DrawImage(videoFrame, Point.Empty);

 pictureBox1.Invalidate();
 }

 private async Task GetVideoFramesAsync(IProgress<bitmap> updater, string fileName, int intervalMs, CancellationToken token = default)
 {
 using (var videoReader = new VideoFileReader())
 {
 if (token.IsCancellationRequested) return;
 videoReader.Open(fileName);

 videoReader.ReadVideoFrame(1);
 trackBar1.Value = 1;

 label1.Text = "Current Frame Number : " + counter.ToString();

 while (true)
 {
 if (Interlocked.Read(ref pause) == 0)
 {
 var frame = videoReader.ReadVideoFrame();

 if (token.IsCancellationRequested || frame is null) break;
 updater.Report(frame);
 }
 await Task.Delay(frameRate).ConfigureAwait(false);
 }
 }
 }

 private void trackBar2_Scroll(object sender, EventArgs e)
 {
 frameRate = trackBar2.Value / 25;
 }

 private async void buttonStart_Click(object sender, EventArgs e)
 {
 string fileName = textBox1.Text;

 if (isVideoRunning) return;
 isVideoRunning = true;

 using (var videoReader = new VideoFileReader())
 {
 videoReader.Open(fileName);
 frame = new Bitmap(videoReader.Width + 2, videoReader.Height + 2);
 trackBar1.Maximum = (int)videoReader.FrameCount;
 }

 videoProgress = new Progress<bitmap>((bitmap) => Updater(bitmap));
 cts = new CancellationTokenSource();
 pictureBox1.Image = frame;
 try
 {
 frameGraphics = Graphics.FromImage(frame);
 // Set the fame rate to 25 frames per second
 //int frameRate = 1000 / 25;
 await GetVideoFramesAsync(videoProgress, fileName, frameRate, cts.Token);
 }
 finally
 {
 frameGraphics?.Dispose();
 StopPlayback(false);
 isVideoRunning = false;
 }
 }

 private void buttonPause_Click(object sender, EventArgs e)
 {
 if (pause == 0)
 {
 buttonPause.Text = "Resume";
 Interlocked.Increment(ref pause);
 }
 else
 {
 Interlocked.Decrement(ref pause);
 buttonPause.Text = "Pause";
 }
 }

 private void buttonStop_Click(object sender, EventArgs e)
 {
 StopPlayback(true);
 }

 protected override void OnFormClosing(FormClosingEventArgs e)
 {
 if (isVideoRunning) StopPlayback(true);
 pictureBox1.Image?.Dispose();
 base.OnFormClosing(e);
 }

 private void pictureBox1_Paint(object sender, PaintEventArgs e)
 {
 ControlPaint.DrawBorder(e.Graphics, pictureBox1.ClientRectangle, Color.Red, ButtonBorderStyle.Solid);
 }

 private void trackBar1_Scroll(object sender, EventArgs e)
 {
 pictureBox1.Image = frames[trackBar1.Value];
 }

 private void button1_Click(object sender, EventArgs e)
 {
 using (OpenFileDialog openFileDialog = new OpenFileDialog())
 {
 openFileDialog.InitialDirectory = "c:\\";
 openFileDialog.Filter = "video files (*.mp4)|*.mp4|All files (*.*)|*.*";
 openFileDialog.FilterIndex = 2;
 openFileDialog.RestoreDirectory = true;

 if (openFileDialog.ShowDialog() == DialogResult.OK)
 {
 //Get the path of specified file
 textBox1.Text = openFileDialog.FileName;
 }
 }
 }
 }
}
</bitmap></bitmap></bitmap></bitmap></bitmap>

-
Unable to build solution in Visual Studio 2019 : The BaseOutputPath/OutputPath property is not set for project
23 juillet 2022, par mhadiIn an effort to integrate FFmpeg with Unity, I have been trying to build a solution file in Visual Studio 2019. However, I am currently unable to resolve the following error when I try to build in Visual Studio :




The BaseOutputPath/OutputPath property is not set for project
'FFmpegUnityInterop.vcxproj'. Please check to make sure that you have
specified a valid combination of Configuration and Platform for this
project. Configuration='Release' Platform='x64'. This error may
also appear if some other project is trying to follow a
project-to-project reference to this project, this project has been
unloaded or is not included in the solution, and the referencing
project does not build using the same or an equivalent Configuration
or Platform.




I have tried a number of solutions, including :


- 

- Manually adding the OutputPath in 'FFmpegUnityInterop.vcxproj'

<outputpath>bin/Build/</outputpath>. - In the FFmpegUnityInterop.vcxproj file, moving the ProjectProperty with my preferred configuration and platform combination to the very top of the list of ProjectProperties (there are 8 of them).
- Building with different configuration and platforms.
- Trying to build from VS Dev Command prompt using the following command :

MSbuild.exe "FFmpegUnityInterop.sln" /p:Configuration=Release /p:Platform="x64", as well as from the Visual Studio IDE. - Tried setting the OutputPath in the command line command
(
>MSbuild.exe FFmpegUnityInterop.sln /p:Configuration=Release /p:Platform="AnyCPU" /p:OutputPath = bin\Debug), only to have
MSbuild throw error MSB1008 (MSBUILD : error MSB1008 : Only one
project can be specified.) - Setting the configuration and platform manually in the Configuration Manager GUI in
Visual Studio.














I may have missed an attempted solution or two above, but I've tried most of the suggestions I found online, only to get the error pasted above. Part of me suspects that my compilation of FFmpeg libraries didn't execute fully, but I unfortunately do not have enough experience to verify that. Any suggestions to resolve this would be much appreciated.


PS. The project was developed privately by a private entity that is currently unreachable


- Manually adding the OutputPath in 'FFmpegUnityInterop.vcxproj'

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