Chrome Version       : 50.0.2661.18
URLs (if applicable) : http://tvzvezda.ru/news/vstrane_i_mire/content/201603252134-zx23.htm
OS version               : Android 5.1.1
Network (such as Cable/DSL/Dial up etc): 3G
Audio/Video format (if applicable): embedded video from youtube.com
Special chrome flags (if applicable):

Video issue, Audio issue, both, neither?
Probably both

Flash or HTML5?
HTML5

We observe mildly frequent crash reports with null pointer access in HTMLMediaElement.cpp on line:
    double mediaTime = webMediaPlayer()->mediaTimeForTimeValue(time);

Stack trace:
0 	blink::HTMLMediaElement::seek 	src/out/Release/../../third_party/WebKit/Source/core/html/HTMLMediaElement.cpp:1808 		
1 	blink::HTMLMediaElement::setCurrentTime 	src/out/Release/../../third_party/WebKit/Source/core/html/HTMLMediaElement.cpp:1933 		
2 	blink::HTMLMediaElementV8Internal::currentTimeAttributeSetterCallback 	src/out/Release/gen/blink/bindings/core/v8/V8HTMLMediaElement.cpp:269 		
3 	v8::internal::FunctionCallbackArguments::Call 	src/out/Release/../../v8/src/arguments.cc:33 		
4 	v8::internal::HandleApiCallHelper<false> 	src/out/Release/../../v8/src/builtins.cc:1575 		
5 	v8::internal::Builtins::InvokeApiFunction 	src/out/Release/../../v8/src/builtins.cc:1657 		
6 	v8::internal::Execution::Call 	src/out/Release/../../v8/src/execution.cc:156 		
7 	v8::internal::Object::SetPropertyWithDefinedSetter 	src/out/Release/../../v8/src/objects.cc:956
8 	v8::internal::Object::SetPropertyWithAccessor 	src/out/Release/../../v8/src/objects.cc:904
9 	v8::internal::Object::SetPropertyInternal 	src/out/Release/../../v8/src/objects.cc:3637
10 	v8::internal::Object::SetProperty 	src/out/Release/../../v8/src/objects.cc:3681
11 	v8::internal::StoreIC::Store 	src/out/Release/../../v8/src/ic/ic.cc:1612
12 	v8::internal::Runtime_StoreIC_Miss 	src/out/Release/../../v8/src/ic/ic.cc:2483

It seems like the problem
    // FIXME: remove m_webMediaPlayer check once we figure out how
    // m_webMediaPlayer is going out of sync with readystate.
    // m_webMediaPlayer is cleared but readystate is not set to HAVE_NOTHING.
still exists