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-rw-r--r--libavutil/hwcontext_cuda.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/libavutil/hwcontext_cuda.c b/libavutil/hwcontext_cuda.c
index cb5d15c9d9..3b1d53e799 100644
--- a/libavutil/hwcontext_cuda.c
+++ b/libavutil/hwcontext_cuda.c
@@ -159,10 +159,11 @@ static int cuda_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
return res;
// YUV420P is a special case.
- // Nvenc expects the U/V planes in swapped order from how ffmpeg expects them.
+ // Nvenc expects the U/V planes in swapped order from how ffmpeg expects them, also chroma is half-aligned
if (ctx->sw_format == AV_PIX_FMT_YUV420P) {
- FFSWAP(uint8_t*, frame->data[1], frame->data[2]);
- FFSWAP(int, frame->linesize[1], frame->linesize[2]);
+ frame->linesize[1] = frame->linesize[2] = frame->linesize[0] / 2;
+ frame->data[2] = frame->data[1];
+ frame->data[1] = frame->data[2] + frame->linesize[2] * ctx->height / 2;
}
frame->format = AV_PIX_FMT_CUDA;