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• Streaming from an RTSP server using the ffmpeg library

  17 janvier 2017, par user92238

  I’m setting up an iOS app that needs to access a video stream from an RTSP server. Starting with the DFURTSPlayer example, I’ve been able to get a player partially working, but I’d really like to improve it in a couple of ways :

  1. The example program uses a timer to poll the video stream every
     1/30th of a second to see if there is a new video frame available
     (it calls av_read_frame in a loop until a frame appears). This seems
     very inefficient, and it has the potential to lock my app up if the
     stream fails. Is there a way I can set up a callback so I can
     process frames only when they arrive ?
  2. The example provides a crude "player" that is actually converting
     each frame into a UIImage and then displaying it in a UIImageView. I
     would like to convert the stream into an AVAsset, so I can pass it
     to a regular video player, as well as use it with other AVFoundation
     classes. Is there any existing code that does this ?

  Thanks,
  Frank

• Why can’t VLC go in to fullscreen mode ?

  31 mai 2017, par matiastofteby

  I’m working on a Matlab application that uses a VLC class to control a VLC-instance. One of the features is to set the VLC player to fullscreen. This feature works perfectly fine.

  The VLC player is downloaded from Matlab’s File Exchange : https://se.mathworks.com/matlabcentral/fileexchange/56215-vlc (Thanks a lot Léa Strobino)

  However, one particular clip insists on resizing the player to a smaller size.
  I have done some research and it turns out that this is a common problem in some VLC versions.

  Normal workarounds are to uncheck the “adapt interface to video size” (something like that) and to check the “Fullscreen” box.
  This ought to make the player open in fullscreen and not resize the screen to video size. The video still resizes the player to a smaller size.

  All the specs of the clips are the same : Same file extension (.vob), formats and were made the same way (I did some video trimming and such using ffmpeg – but the same way every time).

  I have noticed one difference and that is that this particular video has a lower Data and bitrate ( 1000-1500kbps) where as the others are higher (<4000kbps). Also when showing the properties of the clip the frame height and width are blank as opposed to the others that have specific values.

  This should however not have an effect of the fullscreen command from Matlab called after loading the video into the playlist. The command has no effect on this video, but does on all other.

  It is possible to set the player to fullscreen manually by clicking the window, so it is not caused by some restriction in the video not allowing it to fullscreen.

  Why does the video refuse to go in to fullscreen ?

  Hope somebody is able to help.

• config : allowMultiple, let 2+ sounds play simultaneously (default : false, only one sound at a time)

  31 décembre 2010, par Scott Schiller

  m demo/360-player/demo-slider-controls.js m demo/360-player/index.html m demo/360-player/script/360player.js config : allowMultiple, let 2+ sounds play simultaneously (default : false, only one sound at a time)