How to play a video frame by frame? Do not use ffme:MediaElement!

[CodingOctocat]

I want to develop a program similar to video editing software, so I need to obtain each frame of the image rather than playing it with a player control.

To test the feasibility, I wrote the following code, but I found that the screen flickered.
And I was confused by the fact that Duration is a long type, while Seek is an int type.

private async Task PlayFramesAsync(Player player)
{
    const int FrameRate = 24;
    const int FrameIntervalMs = 1000 / FrameRate;

    long totalDurationMs = player.Duration / 1000;

    for (int ms = 0; ms < totalDurationMs; ms += FrameIntervalMs)
    {
        player.Seek(ms);

        using var bitmap = player.TakeSnapshotToBitmap();

        if (bitmap != null)
        {
            image.Source = BitmapToBitmapSource(bitmap);
        }

        await Task.Delay(FrameIntervalMs);
    }
}

[SuRGeoNix]

Hi @CodingOctocat, did you check the FlyleafExtractor (WinForms)?
It uses "DecoderContext" a lower layer from "Player" for exactly this reason.

For seek/duration confusion I understand your frustration.
Generally, the idea is to change all timestamps in the future in microsecond (no milliseconds, no ticks) which is also default for FFmpeg.

[CodingOctocat]

Thanks, I'm currently researching FFmpeg.AutoGen, If I'm playing videos, I'll use Flyleaf.

[SuRGeoNix]

Then you might want to check those too:-

https://github.com/SuRGeoNix/Flyleaf.FFmpeg.Generator
https://github.com/SuRGeoNix/Flyleaf.FFmpeg
https://github.com/SuRGeoNix/Flyleaf.FFmpeg.Samples