Windows 7 Professional 64 bit
Xeon E31270 3.40 GHz CPU
16 GB of RAM
Chrome Version 27.0.1453.116 m
NVIDIA Quadro 2000 1GB
Total available graphics memory 8938 MB
Dedicated graphics memory 1024 MB
Dedicated system memory 0 MB
Shared system memory 7914 MB
About 10GB available RAM (5GB Free, 5GB cached)
The Windows Performance Information gives 7.0 (of a possible 7.9) on my graphics.
Windows Experience Index:
Graphics: Desktop performance for windows Aero = 7.0
Gaming graphics: 3D business and gaming graphics performance = 7.0
H264 files play ok if they are just started and viewed normally.
If I click on the time line with my mouse, the video goes black and needs to be reset to get it back.
It usually takes a few frame changes before it goes black.
The same thing happens if there are HTML5 video controls on the page and I use them to jump around.
The problem occurs with every H264 file I've tried, it doesn't happen with WebM files.
Here's a sample file:
If you view that link with Chrome, it loads an mp4 file: H264 MPEG-4 AVC (part 10)(avc1)
If you view it with Firefox, it loads a WebM file: Google/On2's VP8 Video (VP80)
I downloaded both and played them in Chrome. The WebM file has no problems when I jump around on the timeline, the H264 file goes black within a couple of frame jumps.
I spent a good amount of time searching for an answer, but haven't even found an article that mentions a similar problem, there were some results about H264 not playing, but not about problems when jumping around on the time line.
And of course there were tons of results about the saga of H264 and whether it would be supported by various browsers.
Can I provide additional information that would help to determine the cause of the problem?