Hi I was able to encode ID3D11Texture2D successfully using a derived device context of type V_HWDEVICE_TYPE_QSV and its hardware frames context but when I try to free them the memory does not decrease. I am not very sure if I missed something to free or it is a bug. Here is a small code to reproduce the problem. I am using windows 10, visual studio 2022 and ffmpeg 6.0. thx in advance
#include <iostream> #include <d3d11.h> extern "C" { #include <libavutil/opt.h> #include <libavcodec/avcodec.h> #include <libavutil/hwcontext_d3d11va.h> #include <libavutil/hwcontext_qsv.h> #include <libavutil/hwcontext.h> } int main() { while (true) { AVFrame* frame = av_frame_alloc(); const AVCodec* codec = avcodec_find_encoder_by_name("h264_qsv"); AVCodecContext* encoderContext = avcodec_alloc_context3(codec); encoderContext->width = 1920; encoderContext->height = 1080; encoderContext->time_base.den = 120; encoderContext->time_base.num = 1; encoderContext->framerate.den = 1; encoderContext->framerate.num = 120; encoderContext->max_b_frames = 0; encoderContext->thread_count = 1; encoderContext->gop_size = 10; encoderContext->sw_pix_fmt = AV_PIX_FMT_NV12; encoderContext->pix_fmt = AV_PIX_FMT_QSV; av_opt_set(encoderContext->priv_data, "profile", "baseline", 0); av_opt_set(encoderContext->priv_data, "preset", "veryfast", 0); av_opt_set(encoderContext->priv_data, "async_depth", "1", 0); av_opt_set(encoderContext, "b", "15M", 0); av_opt_set(encoderContext, "maxrate", "15M", 0); av_opt_set(encoderContext, "bufsize", "15M", 0); AVBufferRef* hardwareDeviceContext; int err = av_hwdevice_ctx_create(&(hardwareDeviceContext), AV_HWDEVICE_TYPE_D3D11VA, "hw", nullptr, 0); AVHWDeviceContext* deviceContext = (AVHWDeviceContext*)hardwareDeviceContext->data; AVD3D11VADeviceContext* ctx = (AVD3D11VADeviceContext*)deviceContext->hwctx; //ctx->device = getD3DDevice(); AVBufferRef* hardwareFrameContext; hardwareFrameContext = av_hwframe_ctx_alloc(hardwareDeviceContext); AVHWFramesContext* frames_ctx = (AVHWFramesContext*)(hardwareFrameContext->data); frames_ctx->format = AV_PIX_FMT_D3D11; frames_ctx->sw_format = AV_PIX_FMT_NV12; frames_ctx->width = encoderContext->width; frames_ctx->height = encoderContext->height; frames_ctx->initial_pool_size = 1; err = av_hwframe_ctx_init(hardwareFrameContext); err = av_hwdevice_ctx_create_derived(&encoderContext->hw_device_ctx, AV_HWDEVICE_TYPE_QSV, hardwareDeviceContext, 0); err = av_hwframe_ctx_create_derived(&encoderContext->hw_frames_ctx, AV_PIX_FMT_QSV, encoderContext->hw_device_ctx, hardwareFrameContext, 0); err = avcodec_open2(encoderContext, codec, 0); av_hwframe_get_buffer(encoderContext->hw_frames_ctx, frame, 0); av_buffer_unref(&hardwareDeviceContext); av_buffer_unref(&hardwareFrameContext); hardwareDeviceContext = nullptr; hardwareFrameContext = nullptr; av_buffer_unref(&encoderContext->hw_device_ctx); encoderContext->hw_device_ctx = nullptr; av_buffer_unref(&encoderContext->hw_frames_ctx); encoderContext->hw_frames_ctx = nullptr; av_frame_unref(frame); av_frame_free(&frame); frame = nullptr; avcodec_close(encoderContext); avcodec_free_context(&encoderContext); encoderContext = nullptr; } return 0; }
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