[mythtv] Mediacodec problem with avcodec_flush_buffers

[Aman Gupta]

On Thu, Jul 26, 2018 at 8:18 AM Peter Bennett <pb.mythtv at gmail.com> wrote:

> Hi Aman
>
> When doing a skip forward in playback, we use avcodec_flush_buffers and
> then start processing from a different part of the file. We then receive
> a couple of frames from the new location and then one which contains
> part of a frame from before the flush and part of a new frame. There is
> a diagonal jagged line across the middle. Above the jagged line is part
> of an image after the flush. Below the line is part of an image before
> the flush. This produces a noticeable irritating flash on the screen.
>
> In this case the second frame after the flush was corrupted this way. It
> is not consistent, sometimes the third frame, sometimes a later one. I
> tried to compensate by dropping some frames after a flush but it is
> problematic because it is inconsistent.
>
> This link is a photograph of the screen when I stopped it during playback.
> https://www.dropbox.com/s/rxub9otpwuop3t9/IMG_20180709_173348703.jpg?dl=0
>

I have seen this too. It started when the shield updated to Oreo. I'm not
sure there's anything we can do about it besides reporting to Nvidia.

Aman


> I have other pictures from before and after the bad one if you need them.
>
> Peter
>
>
>
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