deinterlace_d3d12 - FFmpeg 8.1 / Filters / Video

Deinterlace the input video using D3D12 hardware-accelerated video processing.

This filter uses the DirectX 12 Video Processor to perform deinterlacing on GPU, supporting both simple bob and driver-defined advanced (motion-adaptive) algorithms. It requires the input to be in d3d12 hardware pixel format.

The filter automatically queries the hardware for the required number of temporal reference frames (if needed) and manages a frame queue to supply them.

It accepts the following options:

method

The deinterlacing method. It accepts one of the following values:

default: Select the best deinterlacing method available on the hardware. If the driver supports custom, that method is used; otherwise falls back to bob. This is the default.
bob: Bob deinterlacing. Each field is independently scaled to full frame height. Simple and fast, but may produce visible bob artifacts on moving content.
custom: Driver-defined advanced deinterlacing. The exact algorithm is hardware-specific and typically employs motion-adaptive techniques with temporal reference frames for higher quality.

The default value is default.

mode

Specify the interlacing mode. It accepts one of the following values:

frame: Send one frame for each frame. The output frame rate equals the input frame rate. This is the default.
field: Send one frame for each field. The output frame rate is double the input frame rate.

The default value is frame.

deint

Specify which frames to deinterlace. It accepts one of the following values:

all: Deinterlace all frames. This is the default.
interlaced: Only deinterlace frames marked as interlaced; progressive frames are passed through unchanged.

The default value is all.

Examples

Deinterlace an interlaced video using software decoding and the best available hardware deinterlacing method:

ffmpeg -init_hw_device d3d12va=d3d12 -filter_hw_device d3d12 -i input.ts \
       -vf "format=nv12,hwupload,deinterlace_d3d12=method=default,hwdownload,format=nv12" \
       -c:v libx264 -crf 18 output.mp4

Deinterlace at field rate (double the frame rate) using bob method with hardware decoding (full d3d12 pipeline):

ffmpeg -hwaccel d3d12va -hwaccel_output_format d3d12 -i input.ts \
       -vf "deinterlace_d3d12=method=bob:mode=field" \
       -c:v h264_d3d12va output.mp4

Deinterlace only interlaced frames, passing progressive frames through:

ffmpeg -init_hw_device d3d12va=d3d12 -filter_hw_device d3d12 -i input.ts \
       -vf "format=nv12,hwupload,deinterlace_d3d12=deint=interlaced,hwdownload,format=nv12" \
       -c:v libx264 -crf 18 output.mp4