Roku Developer Program

[dbulli]

Hi,

Is there a way with an HLS Stream to have VideoPlayer show an image instead of a full black screen? I have tried various things with events and ImageCanvas, but sometimes the video starts and the canvas elements linger which I was clearing at progress=100.

Thanks

[Anonymous]

Hello,

Using roScreen rather than roImageCanvas is more performant and would give you slightly better timing for dismissal, however, roScreen cannot be used along with greater than 720P video playback. If you know your streams are 720P or lower resolution, then you should try switching to roScreen for your image display and make sure you use the SetMaxVideoDecodeResolution API on the player to manage buffer allocations properly.

Cheers,
Jon

[dbulli]

Thanks. Will look into that SetMaxVideoDecodeResolution. Not really using that.. but when I tried using it I never saw any difference using it. The documentation is very vague about it.

[dbulli]

Another weird annoying thing is there is a pause in between when steam stars and when there is start of play, and nothing is drawing to the screen Sometimes it's brief other times it's long. Any ideas?

'Output events for debug
print msg.GetType(); ","; msg.GetIndex(); ": ["; msg.GetMessage();"]"

20, 0: [Stream started.]
 11, 330: [startup progress]
 11, 339: [startup progress]
 11, 346: [startup progress]
 11, 350: [startup progress]
 11, 355: [startup progress]
 11, 426: [startup progress]
 11, 769: [startup progress]
 11, 999: [startup progress]
 11, 999: [startup progress]
 11, 1000: [startup progress]
 11, 0: [start of play]

[TheEndless]

With the roVideoPlayer, you have to custom draw all screen graphics. In your example, you would need to draw the buffering bar on an roImageCanvas overlayed on top of the roVideoPlayer.

[dbulli]

Thanks Endless. I will try again but in between the stream started and the start play, nothing was displayed on the screen.

[TheEndless]

"dbulli" wrote:
Thanks Endless. I will try again but in between the stream started and the start play, nothing was displayed on the screen.

The output you're seeing in the debug console is the buffer progress (0 to 1000, so divide by 10 for the percentage). That is being written in the IsStatusMessage event in the event loop. You'd need to insert code in there to draw a buffer bar to an image canvas on top of your video screen.