How to use ffmpeg hwaccel d3d11va decode?
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I'm trying to use ffmpeg(3.4) hwaccel d3d11va to decode multiple rtsp streams for video surveillance. I want to get the decode the frames to an existing ID3D11Texture2D texture directly, without ID3D11DeviceContext->Map/Unmap operations.
I have seen the exampleshw_decode.c, the sample use av_hwframe_transfer_data to get data from GPU to CPU, but I want to decode frames to an existing ID3D11Texture2D texture directly, or copy to an existing ID3D11Texture2D texture.
How can I do that? Thanks.
ffmpeg directx-11
asked Nov 11 at 16:05
James Sunderland
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up vote
1
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I'm trying to use ffmpeg(3.4) hwaccel d3d11va to decode multiple rtsp streams for video surveillance. I want to get the decode the frames to an existing ID3D11Texture2D texture directly, without ID3D11DeviceContext->Map/Unmap operations.
I have seen the exampleshw_decode.c, the sample use av_hwframe_transfer_data to get data from GPU to CPU, but I want to decode frames to an existing ID3D11Texture2D texture directly, or copy to an existing ID3D11Texture2D texture.
How can I do that? Thanks.
ffmpeg directx-11
asked Nov 11 at 16:05
James Sunderland
62
add a comment |
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I'm trying to use ffmpeg(3.4) hwaccel d3d11va to decode multiple rtsp streams for video surveillance. I want to get the decode the frames to an existing ID3D11Texture2D texture directly, without ID3D11DeviceContext->Map/Unmap operations.
I have seen the exampleshw_decode.c, the sample use av_hwframe_transfer_data to get data from GPU to CPU, but I want to decode frames to an existing ID3D11Texture2D texture directly, or copy to an existing ID3D11Texture2D texture.
How can I do that? Thanks.
ffmpeg directx-11
asked Nov 11 at 16:05
James Sunderland
62
I'm trying to use ffmpeg(3.4) hwaccel d3d11va to decode multiple rtsp streams for video surveillance. I want to get the decode the frames to an existing ID3D11Texture2D texture directly, without ID3D11DeviceContext->Map/Unmap operations.
I have seen the exampleshw_decode.c, the sample use av_hwframe_transfer_data to get data from GPU to CPU, but I want to decode frames to an existing ID3D11Texture2D texture directly, or copy to an existing ID3D11Texture2D texture.
How can I do that? Thanks.
ffmpeg directx-11
ffmpeg directx-11
asked Nov 11 at 16:05
James Sunderland
62
asked Nov 11 at 16:05
James Sunderland
62
asked Nov 11 at 16:05
James Sunderland
62
asked Nov 11 at 16:05
James Sunderland
62
asked Nov 11 at 16:05
James Sunderland
62
62
add a comment |
add a comment |
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