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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [Gtk] Playback doesn't work in Vimeo"
   href="https://bugs.webkit.org/show_bug.cgi?id=138606#c3">Comment # 3</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [Gtk] Playback doesn't work in Vimeo"
   href="https://bugs.webkit.org/show_bug.cgi?id=138606">bug 138606</a>
              from <span class="vcard"><a class="email" href="mailto:pnormand@igalia.com" title="Philippe Normand <pnormand@igalia.com>"> <span class="fn">Philippe Normand</span></a>
</span></b>
        <pre>It works (almost) fine here with gst master. The HLS stream plays fine but after few seconds:

ASSERTION FAILED: d->m_defersLoading != defers
../../Source/WebCore/platform/network/ResourceHandle.cpp(227) : void WebCore::ResourceHandle::setDefersLoading(bool)
1   0x7fa46f715b43 /home/phil/WebKit/WebKitBuild/Debug/lib/libjavascriptcoregtk-4.0.so.18(WTFCrash+0x1e) [0x7fa46f715b43]
2   0x7fa475c12be6 /home/phil/WebKit/WebKitBuild/Debug/lib/libwebkit2gtk-4.0.so.37(_ZN7WebCore14ResourceHandle16setDefersLoadingEb+0x8a) [0x7fa475c12be6]
3   0x7fa47624cf61 /home/phil/WebKit/WebKitBuild/Debug/lib/libwebkit2gtk-4.0.so.37(_ZN29ResourceHandleStreamingClient16setDefersLoadingEb+0x4b) [0x7fa47624cf61]
4   0x7fa47624a5e6 /home/phil/WebKit/WebKitBuild/Debug/lib/libwebkit2gtk-4.0.so.37(+0x54025e6) [0x7fa47624a5e6]
5   0x7fa47624f9d8 /home/phil/WebKit/WebKitBuild/Debug/lib/libwebkit2gtk-4.0.so.37(_ZNSt5_BindIFPFvP13_WebKitWebSrcES1_EE6__callIvIEILm0EEEET_OSt5tupleIIDpT0_EESt12_Index_tupleIIXspT1_EEE+0x46) [0x7fa47624f9d8]
6   0x7fa47624f846 /home/phil/WebKit/WebKitBuild/Debug/lib/libwebkit2gtk-4.0.so.37(_ZNSt5_BindIFPFvP13_WebKitWebSrcES1_EEclIIEvEET0_DpOT_+0x28) [0x7fa47624f846]
7   0x7fa47624f5b9 /home/phil/WebKit/WebKitBuild/Debug/lib/libwebkit2gtk-4.0.so.37(_ZNSt17_Function_handlerIFvvESt5_BindIFPFvP13_WebKitWebSrcES3_EEE9_M_invokeERKSt9_Any_data+0x20) [0x7fa47624f5b9]
8   0x7fa474ab7a6e /home/phil/WebKit/WebKitBuild/Debug/lib/libwebkit2gtk-4.0.so.37(_ZNKSt8functionIFvvEEclEv+0x32) [0x7fa474ab7a6e]
9   0x7fa476931b88 /home/phil/WebKit/WebKitBuild/Debug/lib/libwebkit2gtk-4.0.so.37(_ZN3WTF25GThreadSafeMainLoopSource12voidCallbackEv+0x5c) [0x7fa476931b88]
10  0x7fa46f75d885 /home/phil/WebKit/WebKitBuild/Debug/lib/libjavascriptcoregtk-4.0.so.18(_ZN3WTF15GMainLoopSource18voidSourceCallbackEPS0_+0x23) [0x7fa46f75d885]
11  0x7fa46c2143f5 /home/phil/WebKit/WebKitBuild/DependenciesGTK/Root/lib64/libglib-2.0.so.0(g_main_context_dispatch+0x135) [0x7fa46c2143f5]
12  0x7fa46c214758 /home/phil/WebKit/WebKitBuild/DependenciesGTK/Root/lib64/libglib-2.0.so.0(+0x48758) [0x7fa46c214758]
13  0x7fa46c214a1a /home/phil/WebKit/WebKitBuild/DependenciesGTK/Root/lib64/libglib-2.0.so.0(g_main_loop_run+0x6a) [0x7fa46c214a1a]
14  0x7fa476932640 /home/phil/WebKit/WebKitBuild/Debug/lib/libwebkit2gtk-4.0.so.37(_ZN3WTF7RunLoop3runEv+0x42) [0x7fa476932640]
15  0x7fa474ec72b4 /home/phil/WebKit/WebKitBuild/Debug/lib/libwebkit2gtk-4.0.so.37(_ZN6WebKit16ChildProcessMainINS_10WebProcessENS_14WebProcessMainEEEiiPPc+0x82) [0x7fa474ec72b4]
16  0x7fa474ec711f /home/phil/WebKit/WebKitBuild/Debug/lib/libwebkit2gtk-4.0.so.37(WebProcessMainUnix+0x20) [0x7fa474ec711f]
17  0x400851 /home/phil/WebKit/WebKitBuild/Debug/bin/WebKitWebProcess(main+0x34) [0x400851]
18  0x7fa47029eb45 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7fa47029eb45]
19  0x400759 /home/phil/WebKit/WebKitBuild/Debug/bin/WebKitWebProcess() [0x400759]</pre>
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