VideoClipObject sometimes work sometines didn't work : MP4 file

Hi , sorry for my bad english
I have a problem with mp4 url to play video in plex :

This is my code :
`url1 = ‘http://fs35.youwatch.org:8777/slvpz4afosoax3ptx3nift52u4sp73jynewnh2ouhnjwak3l6jagi72xse/video.mp4
url2 = ‘http://techslides.com/demos/sample-videos/small.mp4
title = “title”,
summary = “summary”,
include_container = True
url = url1

videoclip_obj = VideoClipObject(
	key = Callback(CreateVideoClipObject, url=url, title=title, summary=summary, include_container=include_container),
	rating_key = url,
	title = title,
	summary = summary,
	items = [
		MediaObject(
			parts = [
				PartObject(key=url)
			],
			container = Container.MP4,
			video_codec = VideoCodec.H264,
			video_resolution = '544',
			audio_codec = AudioCodec.AAC,
			audio_channels = 2,
			optimized_for_streaming = False
		)
	]
)

if include_container:
	return ObjectContainer(objects=[videoclip_obj])
else:
	return videoclip_obj`

When you switch between url1 and url2 just url2 works.
But you can see url1 in VLC, or download it
What i’m missing ?

I follow this discussion :
I can access to this video :

And this video
http://fs23.exashare.com:8777/7wxkdvwnzym56odwtyi6jw7svh7fn3zabx2jlpxz7ujsr6qrnetrcf6ge7la/v.mp4
But i can’t access to this video :
http://fs35.youwatch.org:8777/slvpz4afosoax3ptx3nift52u4sp73jynewnh2ouhnjwak3l6jagi72xse/video.mp4

I think it’s a problem with chrome and firefox
because with safari, it works but didn’t play the video but you can forward the movie and see a picture

If I copy and paste the content page of plex in a html file : IT WORKS
this is the div i catch with developer tools :
<video id="html-video" class="html-video" autoplay="" src="http://fs49.youwatch.org:8777/alvpyvygosoax3ptx3nifdnru2vxu4co27tbljwurjykfzvakptkbnzdfi/video.mp4"></video>

Anyone have an answer ?

Not directly an answer, but maybe:

  • Firewall issue for certain apps (since some of those links contain a non-standard port number)?
  • Corrupt video file; or video file not optimized for streaming?