自定义视频格式文件无法保存且无报错问题求助

Hey there! Let's break down why your "create custom format from image group" feature isn't working—first off, props on getting the rest of your custom video player up and running, that's a solid start.

Looking at the code snippet you shared, I can spot a few immediate gaps that are likely causing the problem:

• You initialize string[] filePaths = { }; as an empty array but never populate it with actual image file paths from the selected folder.
• The List<Frame> frms is created, but there's no code to convert the selected images into Frame objects and add them to the list.
• The code cuts off before the actual processing call, but even if that code existed, it'd be working with empty data right now.

Here's a revised version of your code that fixes these core issues: #

private void createBtn_Click(object sender, EventArgs e) 
{
    VideoProcessing processing = new VideoProcessing();
    List<Frame> frms = new List<Frame>();
    
    using (var fbd = new FolderBrowserDialog()) 
    {
        DialogResult result = fbd.ShowDialog();
        // Make sure a folder was selected and the path isn't empty
        if (result == DialogResult.OK && !string.IsNullOrWhiteSpace(fbd.SelectedPath)) 
        {
            // Define which image formats you want to support
            string[] supportedImageExtensions = { ".jpg", ".jpeg", ".png", ".bmp", ".gif" };
            
            // Get all image files in the selected folder, sorted to maintain frame order
            var filePaths = Directory.GetFiles(fbd.SelectedPath)
                                     .Where(file => supportedImageExtensions.Contains(Path.GetExtension(file).ToLowerInvariant()))
                                     .OrderBy(fileName => fileName)
                                     .ToArray();
            
            // Convert each image to a Frame object (adjust this to match your Frame class implementation)
            foreach (string imagePath in filePaths) 
            {
                try 
                {
                    // Example: Assume your Frame class has a method to load from a file
                    Frame newFrame = Frame.LoadFromImageFile(imagePath);
                    if (newFrame != null)
                    {
                        frms.Add(newFrame);
                    }
                }
                catch (Exception ex)
                {
                    // Log or display errors for problematic images
                    MessageBox.Show($"Failed to load {Path.GetFileName(imagePath)}: {ex.Message}");
                }
            }
            
            // Only attempt to create the custom format if we have valid frames
            if (frms.Count > 0)
            {
                bool creationSuccess = processing.GenerateCustomFormat(frms, @"C:\YourOutputPath\video.custom");
                if (creationSuccess)
                {
                    MessageBox.Show("Custom format file created successfully!");
                }
                else
                {
                    MessageBox.Show("Failed to create custom format—check your VideoProcessing logic.");
                }
            }
            else
            {
                MessageBox.Show("No valid image files found in the selected folder.");
            }
        }
    }
}

Additional Troubleshooting Steps: #

• Verify your Frame class: Test the image-to-Frame conversion logic with a single image file outside of this click event to rule out issues there.
• Check VideoProcessing logic: Ensure your format generation method handles non-empty frame lists properly, and that it writes to a location your app has permission to access.
• Folder permissions: On Windows, try saving the output to a simpler location like your Desktop first—some protected folders (like Documents) require elevated permissions.
• Image file validity: Confirm all images in the selected folder are not corrupted and match the formats your code supports.

内容的提问来源于stack exchange，提问作者user4440718