To film videos for YouTube and TikTok, start by planning your content to engage viewers. Use a good quality camera or a high-resolution smartphone. Ensure you have proper lighting and clear audio. Keep YouTube videos informative and detailed, while TikTok videos should be short and catchy. Edit your videos using tools like Adobe Premiere or iMovie for YouTube, and in-app editing features for TikTok. For content inspiration, use a tiktok downloader app for ios to save trending videos and study their style. Finally, upload your videos with engaging titles, descriptions, and appropriate tags to reach a wider audience.