<br><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Timothy Braun</b> <span dir="ltr"><<a href="mailto:braunsquared@gmail.com">braunsquared@gmail.com</a>></span><br> Date: Tue, Jan 4, 2011 at 1:08 PM<br>Subject: Re: Video transitions using gnloperation<br>To: Lane Brooks <<a href="mailto:lane@brooks.nu">lane@brooks.nu</a>><br><br><br>What do you get when you set GST_DEBUG=2? The pipeline is most likely freezing because of a caps filter or a pad issue. What is the pipeline connected to for output?<div> <div></div><div class="h5"><br><br><div class="gmail_quote">On Tue, Jan 4, 2011 at 12:56 PM, Lane Brooks <span dir="ltr"><<a href="mailto:lane@brooks.nu" target="_blank">lane@brooks.nu</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div>On 01/04/2011 10:33 AM, Timothy Braun wrote:<br> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Make sure the gnl input sources have different priorities and set the gnloperations priority to 0.<br> </blockquote> <br></div> Thanks for the idea. I tried setting the priority of the op to 0, src1 to 1, and src2 to 2. Now when I run it the stream hangs after 2 seconds, which is when the gnloperation and src2 are starting up. I did some testing and the hanging only occurs if I set the priority on src2 to anything other than 0. I can set the priorities on the op and src1 without hanging (it still doesn't work, however). Here is my code again with the updates:<div> <br> <br> comp = gst.element_factory_make("gnlcomposition")<br> src1 = gst.element_factory_make("gnlfilesource")<br> src2 = gst.element_factory_make("gnlfilesource")<br> <br> comp.add(src1)<br> src1.set_property("location", "/test1.mp4")<br> src1.set_property("start", 0 * gst.SECOND)<br> src1.set_property("duration", 5 * gst.SECOND)<br> src1.set_property("media-start", 0 * gst.SECOND)<br> src1.set_property("media-duration", 5 * gst.SECOND)<br></div> src1.set_property("priority", 1)<div><br> <br> comp.add(src2)<br> src2.set_property("location", "/test2.mp4")<br> src2.set_property("start", 2 * gst.SECOND)<br> src2.set_property("duration", 5 * gst.SECOND)<br> src2.set_property("media-start", 0 * gst.SECOND)<br> src2.set_property("media-duration", 5 * gst.SECOND)<br></div> src2.set_property("priority", 2)<div><br> <br> op = gst.element_factory_make("gnloperation")<br> tran = gst.element_factory_make("smpte")<br> tran.set_property("type", 234)<br> tran.set_property("duration", 3 * gst.SECOND)<br> op.add(tran)<br></div><div> op.set_property("start", 2 * gst.SECOND)<br> op.set_property("duration", 3 * gst.SECOND)<br> op.set_property("media-start", 0 * gst.SECOND)<br> op.set_property("media-duration", 3 * gst.SECOND)<br></div> op.set_property("priority", 0)<br> comp.add(op)<br> <br> I can get the smpte transition to work correctly on these two streams when not using the gnonlin elements, but that is not very interesting as I have to run the two streams in parallel.<br> <br> Any other ideas?<br><font color="#888888"> <br> Lane</font><div><div></div><div><br> <br> <br> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> On Jan 4, 2011, at 12:01 PM, Lane Brooks<<a href="mailto:lane@brooks.nu" target="_blank">lane@brooks.nu</a>> wrote:<br> <br> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> On 01/04/2011 05:39 AM, Edward Hervey wrote:<br> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> On Mon, 2011-01-03 at 23:23 -0700, Lane Brooks wrote:<br> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> I have a gnlcomposition containing two video sources. I would like to<br> apply a smpte transition from one source to the next.<br> <br> I have tried overlapping the two gnlsources by 3 seconds. I then put a<br> 'smpte' element in a 'gnloperation' and add the 'gnloperation' to the<br> 'gnlcompostion'. The addition of the gnloperation doesn't seem to do<br> anything. The resulting video is the same regardless of whether I add<br> the gnloperation or not. The result is always that the second video<br> takes over during the period of overlap. Here is code I have (in python):<br> <br> comp = gst.element_factory_make("gnlcomposition")<br> src1 = gst.element_factory_make("gnlfilesource")<br> src2 = gst.element_factory_make("gnlfilesource")<br> <br> comp.add(src1)<br> src1.set_property("location", "/test1.mp4")<br> src1.set_property("start", 0 * gst.SECOND)<br> src1.set_property("duration", 5 * gst.SECOND)<br> src1.set_property("media-start", 0 * gst.SECOND)<br> src1.set_property("media-duration", 5 * gst.SECOND)<br> <br> comp.add(src2)<br> src2.set_property("location", "/test2.mp4")<br> src2.set_property("start", 2 * gst.SECOND)<br> src2.set_property("duration", 5 * gst.SECOND)<br> src2.set_property("media-start", 0 * gst.SECOND)<br> src2.set_property("media-duration", 5 * gst.SECOND)<br> <br> op = gst.element_factory_make("gnloperation")<br> tran = gst.element_factory_make("smpte")<br> tran.set_property("type", 234)<br> tran.set_property("duration", 3 * gst.SECOND)<br> op.add(tran)<br> </blockquote> <br> Set the [media-]{start|duration} propertie son op also<br> </blockquote> <br> I had already tried this as well.<br> <br> op.set_property("start", 2 * gst.SECOND)<br> op.set_property("duration", 3 * gst.SECOND)<br> op.set_property("media-start", 0 * gst.SECOND)<br> op.set_property("media-duration", 3 * gst.SECOND)<br> <br> I am not sure what I should put the media-start at, but I have tried<br> both 0 and 2 and neither works. Any other ideas?<br> <br> <br> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> <br> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> comp.add(op)<br> <br> Anyone know if using an smpte transition is possible, and if so, what I<br> am doing wrong?<br> <br> Thanks,<br> Lane<br> </blockquote></blockquote></blockquote></blockquote> <br> </div></div></blockquote></div><br> </div></div></div><br>