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This is a free, open-source program that you can use to quickly put together a video using an image and an audio file. This program is only available for Windows. You'll find this in the left menu. This will begin downloading the program. You'll see this at the top of the window when the ZIP file is open. You'll find this folder in the same location as the downloaded file, usually in your Downloads folder. This will launch VirtualDub. This will make the image display as long as your audio file. It may take a few minutes for your video to process. Double-click the video file to test it out. If you can see the image and hear the audio, you're good to go. Once you've tested your video, you can use the YouTube website to upload the video to your channel.
Visit the VirtualDub website. Click the Downloads link. Click the VirtualDub at SourceForge link. Click the Download V1.10.4 (x86 / 32-bit) link. Double-click the downloaded ZIP file. Click the Extract button. Open the new folder that was created when extracting the files. Run the Veedub32.exe file. Click the File menu. Click Open video file. Select the image file you want to use and click Open. Click the Audio menu. Click Audio from other file. Select the audio file you want to use and click Open. Click the Video menu. Click Frame Rate. Click Change so video and audio durations match. Click OK. Click the File menu. Click Save as AVI. Select where you want to save the file and give it a name. Click Save. Test your video. Upload the video to YouTube.