stevxiao 7b2ae2ccf7 avcodec/d3d12va_encode: add intra refresh support for d3d12va encode ...

Intra refresh is a technique that gradually refreshes the video by encoding rows or regions as intra macroblocks/CTUs spread over multiple frames, rather than using periodic I-frames.
This provides better error resilience for video streaming while maintaining more consistent bitrate.

Disable Intra Refresh (This is the default)
ffmpeg -init_hw_device d3d12va -hwaccel d3d12va -hwaccel_output_format d3d12 \
-i input.mp4 \
-c:v h264_d3d12va \
-intra_refresh_mode none \
-intra_refresh_duration 30 \
-g 60 \
output.h264

Enable Intra Refresh
ffmpeg -init_hw_device d3d12va -hwaccel d3d12va -hwaccel_output_format d3d12 \
-i input.mp4 \
-c:v h264_d3d12va \
-intra_refresh_mode row_based \
-intra_refresh_duration 30 \
-g 60 \
output.h264

Parameters
- `-intra_refresh_mode`: Set to `row_based` to enable row-based intra refresh, or `NONE` to disable
- `-intra_refresh_duration`: Number of frames over which to spread the intra refresh (default: 0 = use GOP size)
- `-g`: GOP size (should typically be larger than intra refresh duration)

2025-12-04 08:26:26 +00:00

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