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<p>When you set the state of a pipeline to (for example) NULL, it is
a bit like pressing the button on a pedestrian crossing.</p>
<p>You should not press the button and then immediately cross the
road as doing so will be likely to drastically shorten your life -
instead, you press the button and then wait for the traffic to
stop.</p>
<p>When you set the state of a pipeline, you need to wait for a
signal from the pipeline that it has done what you ask - and only
then try to make another change.</p>
<p>I assume that it is a transcription error that you set p1 to
PLAYING in each of your 3 cases.</p>
<p>You may want to SEEK to the beginning as each pipeline may
remember that it has reached the end of the clip.<br>
</p>
<br>
<div class="moz-cite-prefix">On 09/02/2017 15:45, Dimitrios Katsaros
wrote:<br>
</div>
<blockquote
cite="mid:CAHpJRnxLVcD62oHJ9OMfkZ8uGXXwqJuTOu=Mj36nntjyiM1noA@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>
<div>
<div>
<div>
<div>
<div>I think we need a bit more information before
figuring this out. <br>
<br>
Have you tried running and stopping a single
pipeline? <br>
</div>
What happens when you stop one video? Does the
recording stop<br>
</div>
or continue playing?<br>
</div>
Are you sure the callbacks for the keys are working after
launching the pipeline?<br>
</div>
If you are running g-main_loop on your main thread it may be
blocking the callbacks for<br>
</div>
key events?<br>
<br>
</div>
Dimitrios<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Feb 8, 2017 at 3:39 PM, Michael
Yarochkin <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:michael.yarochkin@timetronics.be"
target="_blank">michael.yarochkin@timetronics.be</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div dir="ltr">
<div id="m_-1975791287034119917x_divtagdefaultwrapper"
dir="ltr"
style="font-size:12pt;color:#000000;font-family:Calibri,Arial,Helvetica,sans-serif">
<p>Hello, </p>
<p><br>
</p>
<p><span style="font-size:12pt">Don`t you need to use </span><br>
</p>
<p><span
style="color:rgb(33,33,33);font-size:13.3333px">p1.set_state(Gst.State.<span>PAUSED</span>)</span></p>
<p><span
style="color:rgb(33,33,33);font-size:13.3333px"><br>
</span></p>
<p><span
style="color:rgb(33,33,33);font-size:13.3333px"><span
style="font-family:Calibri,Arial,Helvetica,sans-serif,"Apple Color
Emoji","Segoe UI
Emoji",NotoColorEmoji,"Segoe UI
Symbol","Android
Emoji",EmojiSymbols;font-size:16px">Just a
guess. I can be wrong.</span><br>
</span></p>
<p><span
style="color:rgb(33,33,33);font-size:13.3333px"><span
style="font-family:Calibri,Arial,Helvetica,sans-serif,"Apple Color
Emoji","Segoe UI
Emoji",NotoColorEmoji,"Segoe UI
Symbol","Android
Emoji",EmojiSymbols;font-size:16px"><br>
</span></span></p>
<p><span
style="color:rgb(33,33,33);font-size:13.3333px"><span
style="font-family:Calibri,Arial,Helvetica,sans-serif,"Apple Color
Emoji","Segoe UI
Emoji",NotoColorEmoji,"Segoe UI
Symbol","Android
Emoji",EmojiSymbols;font-size:16px">Mikl</span></span></p>
</div>
<hr style="display:inline-block;width:98%">
<div id="m_-1975791287034119917x_divRplyFwdMsg"
dir="ltr"><font style="font-size:11pt" face="Calibri,
sans-serif" color="#000000"><b>From:</b>
gstreamer-devel <<a moz-do-not-send="true"
href="mailto:gstreamer-devel-bounces@lists.freedesktop.org"
target="_blank">gstreamer-devel-bounces@<wbr>lists.freedesktop.org</a>>
on behalf of <a moz-do-not-send="true"
href="mailto:whoman@gmail.com" target="_blank">whoman@gmail.com</a>
<<a moz-do-not-send="true"
href="mailto:whoman@gmail.com" target="_blank">whoman@gmail.com</a>><br>
<b>Sent:</b> Tuesday, January 10, 2017 7:27:59 PM<br>
<b>To:</b> <a moz-do-not-send="true"
href="mailto:gstreamer-devel@lists.freedesktop.org"
target="_blank">gstreamer-devel@lists.<wbr>freedesktop.org</a><br>
<b>Subject:</b> Why can't I replay the same video
twice with python?</font>
<div> </div>
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<div class="h5">
<font size="2"><span style="font-size:10pt">
<div class="m_-1975791287034119917PlainText">Hello,<br>
I want to play 3 video files, like a piano.<br>
<br>
I have it working, however it will only play
each video one time...<br>
2nd time I press any of the 3 keys, the video
does not start playing<br>
again.<br>
No error messages returned. GST acts as if it's
doing everything as expected.<br>
<br>
I'm using python.... Here's the pertinent parts
of my code:<br>
<br>
p1 = Gst.parse_launch ("filesrc
location=file1.mp4 ! qtdemux !<br>
h264parse ! vaapidecodebin ! videoconvert !
vaapisink<br>
fullscreen=true")<br>
p2 = Gst.parse_launch ("filesrc
location=file2.mp4 ! qtdemux !<br>
h264parse ! vaapidecodebin ! videoconvert !
vaapisink<br>
fullscreen=true")<br>
p3 = Gst.parse_launch ("filesrc
location=file3.mp4 ! qtdemux !<br>
h264parse ! vaapidecodebin ! videoconvert !
vaapisink<br>
fullscreen=true")<br>
<br>
def StopAllPipelines():<br>
#Stop all other pipelines<br>
p1.set_state(Gst.State.NULL)<br>
p2.set_state(Gst.State.NULL)<br>
p3.set_state(Gst.State.NULL)<br>
<br>
def PlayVideo1():<br>
StopAllPipelines()<br>
p1.set_state(Gst.State.<wbr>PLAYING)<br>
<br>
def PlayVideo2():<br>
StopAllPipelines()<br>
p1.set_state(Gst.State.<wbr>PLAYING)<br>
<br>
def PlayVideo3():<br>
StopAllPipelines()<br>
p1.set_state(Gst.State.<wbr>PLAYING)<br>
<br>
I've tried deleting the pipeline variable
references (p1 p2 and p3)<br>
and then recreating them, same result.<br>
I've tried setting p1 p2 and p3 to "None" and
then recreating them, same result.<br>
<br>
The only thing I can think is that there's some
kind of async issue,<br>
where my PlayVideo1() functions aren't waiting
for StopAllPipelines()<br>
to finish, before trying to set the p1 state to
PLAYING?<br>
I tried inserting a "p1.get_state(1)" in
between, same result.<br>
Perhaps there's more that needs to be done
between setting the states<br>
to NULL, then back to PLAYING<br>
<br>
Any ideas?<br>
______________________________<wbr>_________________</div>
</span></font></div>
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