Creating Segments in Video

I'm using Python 2.7, PyGTK 2.24, and PyGST (Gstreamer).

To ensure smooth playback from on开发者_运维问答e clip to another (without a blink), I combined all the clips I needed into one larger video. This lets me seek to the exact place I need in code. One of the clips is like a "fill-in", which should loop whenever one of the other clips is not playing.

However, to make my code easier and more streamlined, I want to use segments to define the various clips within the larger video. Then, at the end of each segment (I know there is a segment end event), I seek to the fill-in clip. When I need another clip, I just seek to that segment.

My question is, how exactly do I create these segments? I'm guessing that would be the event_new_new_segment(), but I am not sure. Can I create multiple clips to seek with using this function? Is there another I should use. Are there any gotchas to this method of seeking in my video that I should be aware of?

Second, how do I seek to that segement?

Thank you!

Looks like only GstElement's can generate NEWSEGMENT events, you can't simply attach it to an existing element. The closest thing you could do if not using Python, would be creating a single shot or periodic GstClockID or and use gst_clock_id_wait_async until the clock time hit. But the problem is, GstClockID is not wrapped in PyGst.

I think I'm actually working on some similar problem. Some kind of solution I'm using now, is gluing video streams in real time with gnonlin. The good side: seems to work, didn't have time to thoroughly test it yet. Bad side: poorly documented and buggy. These sources from the flumotion project (and the comments inside!) were very, very helpful to me for understanding how to make the whole thing work.