---
Kindof hacky, but a simple way to make hardware transcode with dxva2 work in
avconv without needing the hw_device_ctx support to convert it to the
hw-generic tooling.
Slightly unfortunate that the pixfmt is called "dxva_vld", though.
Example:
./avconv.exe -y -init_hw_device dxva2 -hwaccel dxva2 -hwaccel_output_format
dxva2_vld -i in.mp4 -an -vf 'hwmap=derive_device=qsv,format=qsv' -c:v h264_qsv
-b 5M -maxrate 5M out.mp4
avtools/avconv_dxva2.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/avtools/avconv_dxva2.c b/avtools/avconv_dxva2.c
index 7578c3f63..710b1a818 100644
--- a/avtools/avconv_dxva2.c
+++ b/avtools/avconv_dxva2.c
@@ -137,6 +137,9 @@ static int dxva2_retrieve_data(AVCodecContext *s, AVFrame
*frame)
DXVA2Context *ctx = ist->hwaccel_ctx;
int ret;
+ if (frame->format == ist->hwaccel_output_format)
+ return 0;
+
ret = av_hwframe_transfer_data(ctx->tmp_frame, frame, 0);
if (ret < 0)
return ret;
--
2.11.0
_______________________________________________
libav-devel mailing list
[email protected]
https://lists.libav.org/mailman/listinfo/libav-devel
