Bug 99501 – [gstreamer] video error if gst_app_src_push_buffer returns GST_FLOW_WRONG_STATE

• Status: RESOLVED
• Resolution: WORKSFORME
• Component: Media

[arno.]

Hi,
sometimes, gst_app_src_push_buffer returns GST_FLOW_WRONG_STATE and video is not displayed. This happens to me quite often (about 10% of every time I load a video).
GST_FLOW_WRONG_STATE is returned because of some flushing lock in gstreamer. I could not find the root of the problem, but meanwhile, when we are in this case, we can probably retry to push the buffer data the next time).

[arno.]

Created attachment 169023 [details]
patch proposal: store unpushed data in a Vector<char> and push it next time

patch proposal

[Philippe Normand]

Seems like a workaround (hack) for a possible GStreamer bug.

What's your platform exactly? GStreamer version? Which type of media file are you trying to play, does it happen with any container/format?

[arno.]

(In reply to comment #2)
> Seems like a workaround (hack) for a possible GStreamer bug.
> 
> What's your platform exactly? GStreamer version? Which type of media file are you trying to play, does it happen with any container/format?

The bug happen with both gstreamer 0.10 (0.10.36-1ubuntu1) and 1.0 (1.0.0-1~ubuntu12.04.1~ppa1)

I was only testing with webm videos, but I could reproduce it with this ogv video http://www.craftymind.com/factory/html5video/BigBuckBunny_640x360.ogv
I tried around twenty or thirty times with this mp4 video, but the bug did not appear http://www.craftymind.com/factory/html5video/BigBuckBunny_640x360.mp4

[Philippe Normand]

So this happens on the desktop?

Have you tried to increase the size of the internal queue of appsrc? With gst_app_src_set_max_bytes().

[Philippe Normand]

Comment on attachment 169023 [details]
patch proposal: store unpushed data in a Vector<char> and push it next time

r- this for now, until Arnaud provides some more feedback.

[Philippe Normand]

Closing this for now, feel free to reopen if it makes sense :)