Hi,
why dont you use streamlink?So its working to download / watch the movie.Just try this.
Code:
streamlink.exe -ldebug https://www.youtube.com/watch?v=-2lIJUEDJwA best -o video.mp4
Code:
C:\Program Files\Streamlink\bin>streamlink.exe -ldebug https://www.youtube.com/watch?v=-2lIJUEDJwA best -o test.mp4
[cli][info] Found matching plugin youtube for URL https://www.youtube.com/watch?v=-2lIJUEDJwA
[cli][info] Available streams: audio_webm, audio_mp4, 144p (worst), 240p, 360p,720p (best)
[cli][info] Opening stream: 720p (http)
[cli][debug] Pre-buffering 8192 bytes
[cli][debug] Checking file output
[cli][debug] Writing stream to output
[download][test.mp4] Written 25.8 MB (5s @ 4.7 MB/s)
Interrupted! Exiting...
[cli][info] Closing currently open stream...
C:\Program Files\Streamlink\bin>
greetz