SetContentList is the function mentioned in the documentation, although I have tried SetContent. In terms of observing the state of the Video player, I can observe that it is buffering, playing, paused, etc. my problem is that I can't detect if its getting a 404 when trying to buffer a non-existent video.
Thank you for help btw
I don't know why your "state" observer isn't working. I tried setting the URL to a nonexistent video on my server and my server returned a 404, my "state" observer fired, GetData() returned "error". and my video node "errorCode" was set to 404.
Edit: "errorCode" is set to -1. "errorStr" shows the 404.
Is that for a `roVideoPlayer` object or a `roSGNode` that represents a Video SceneGraph element? I have a "state" observer on the `roSGNode` for my video element, but it doesn't fire with errors, it just fires for states like "buffering", "paused", "playing", etc.
That's for a Video node. My "onState" observer function fires first with "buffering" and then with "error" when I set the URL to a nonexistent file. I've also used observers with message ports and waited on the port in the main thread. That looks something like this:
Function displayVideo(video as Object) as Integer
print "Displaying video: "; video["url"]
vn = m.video_node
vc = createObject("roSGNode", "ContentNode")
vc.url = video.url
vc.StreamFormat = video.StreamFormat
print vn.observeField("position", m.port)
print vn.observeField("control", m.port)
print vn.observeField("state", m.port)
vn.content = vc
vn.setFocus(true)
vn.control = "play"
while true
msg = wait(0,m.port)
msgtype = type(msg)
print msgtype
if msgtype = "roSGNodeEvent" then
node = msg.GetNode()
field = msg.GetField()
data = msg.GetData()
print node, field, data
if field = "position" then
position = data
else if field = "control" and data = "stop" then
exit while
else if field = "state" then
if data = "finished" then
exit while
else if data = "buffering" then
m.video_screen.visible = true
else if data = "error" then
print vn.errorCode
print vn.errorMsg
print vn.errorStr
print vn.errorInfo
else if data = "playing" then
'
else if data = "paused" then
'
end if
end if
else if msgtype = "roSGScreenEvent" then
print msgtype, msg.GetData(), msg.isScreenClosed()
vn.control = "stop"
exit while
end if
end while
vn.control = "stop"
print vn.unobserveField("position")
print vn.unobserveField("control")
print vn.unobserveField("state")
return position
End Function
and produces this output:
roSGNodeEvent
video control play
roSGNodeEvent
video state buffering
roSGNodeEvent
video state error
errorCode: -1
errorMsg: There was an error in the HTTP response. This could mean that malformed HTTP headers or an HTTP error code was returned.
errorStr: reader pick stream error:HTTP error:HTTP server returned error code:404:extra:etype:buffer
errorInfo: <Component: roAssociativeArray> =
{
category: "http"
clipid: 1
dbgmsg: "reader pick stream error:HTTP error:HTTP server returned error code:404:extra:etype:buffer"
drmerrcode: 0
errcode: 2
ignored: false
source: "buffer:reader"
}Wow, I didn't realize you could observe a field and then have it go to a port instead of a function... I still have a lot to learn about Roku app development 😂 So that works if I give the player a non-existent video to begin with, but say (and this is the issue I'm trying to resolve) that the video exists originally and then gets deleted while it's being played. That's when I can't detect that it's getting an error, it just thinks it's buffering.
However, I did find a workaround; every time the player starts buffering, I send a GET request to the same url and look at the response and then act accordingly. That way I can tell if the video stopped existing during playback. Really weird issue, I know.
I still wish I could get the `roVideoPlayer` working though, because the documentation says that when given a list of videos a `roVideoPlayer` will automatically pre-buffer the next video to make playback of a bunch of videos seamless. That would help me a lot, instead of taking videos and concatenating them on the server and then returning the result to the device. (I'm trying to basically show a bunch of ~15 second videos in a row on a TV seamlessly, almost like a slideshow).
Anyways, thank you renojim SO much for helping out!
