Amazon.com: UNISHEEN HD Video Capture Box 2 Channel HDMI Picture-in-Picture Video Recorder with Screen 7 inches MP4 Support SD Card U Disk Storage 1080p 60 FPS Support YouTube Have USB2.0 Cable Remote
YouTubeに高画質MP4動画をアップロードする方法
8 Best YouTube to MP4 Converter for Mac in 2023 (Inc. M2 Macs)