Can't play mp4 video in Chromium build when hardware acceleration is enabled

[Steve Johnson]

I built Chromium on Windows with the options ffmpeg_branding=Chrome and proprietary_codecs=1 to see if it can handle mp4 video properly. 

Here is what I found. If I disable the hardware acceleration, mp4 video plays just fine. When hardware acceleration is enabled, it doesn't play at all. I am using 38.0.2125.104 which is slightly outdated. Not sure if m39 makes any difference. 

Do I miss any other options in order to enable the mp4 codecs in Chromium build?

Thanks for any help!

[PhistucK]

Well, first, always use the latest as it may include fixes in any area.

Second, does Chrome show the MP4 on the same system when hardware acceleration is enabled?

☆PhistucK

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[Chen Zhixiang]

I think the problem is in ffmpeg module when use hardware acceleration on Windows
it may be a driver problem which cause ffmpeg decode error