When you see an .m3u8 file, that’s a streaming playlist. You need a tool like ffmpeg to combine the .ts files. Use this command in Command Prompt: ffmpeg -i "video.m3u8" -c copy output.mp4
Have you successfully downloaded a video from Netu.tv using another method? Share your experience in the comments below! how to download videos from netu.tv
If standard downloaders fail, you can manually capture the video source: When you see an