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From [@lars18th](https://github.com/keylase/nvidia-patch/issues/491)
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From [@lars18th](https://github.com/keylase/nvidia-patch/issues/491) and [@reloxx13](https://github.com/keylase/nvidia-patch/issues/544#issuecomment-1170310363)
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Here a simple command to check if the patching works:
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### Linux
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```
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ffmpeg -y -vsync 0 -hwaccel cuda -hwaccel_output_format cuda \
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-f lavfi -i testsrc -t 50 \
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| ... | ... | @@ -12,6 +12,19 @@ ffmpeg -y -vsync 0 -hwaccel cuda -hwaccel_output_format cuda \ |
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This only requires to have installed a recent ffmpeg version compiled with nvenc enabled. Almost all distributions have it now.
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### Windows
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ffmpeg download https://www.gyan.dev/ffmpeg/builds/ffmpeg-git-full.7z
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```
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ffmpeg.exe -y -hwaccel cuda -hwaccel_output_format cuda ^
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-f lavfi -i testsrc -t 50 ^
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-vf hwupload -fps_mode passthrough -c:a copy -c:v h264_nvenc -b:v 4M -f null - ^
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-vf hwupload -fps_mode passthrough -c:a copy -c:v h264_nvenc -b:v 1M -f null - ^
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-vf hwupload -fps_mode passthrough -c:a copy -c:v h264_nvenc -b:v 8M -f null - ^
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-vf hwupload -fps_mode passthrough -c:a copy -c:v h264_nvenc -b:v 6M -f null -
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```
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## Output
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If you get a message like:
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```
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[h264_nvenc @ 0x55fc31535fc0] OpenEncodeSessionEx failed: out of memory (10): (no details)
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| ... | ... | @@ -25,3 +38,8 @@ But if the ffmpeg starts to work and shows: |
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frame= 560 fps=329 q=8.0 Lq=8.0 q=8.0 q=8.0 size=N/A time=00:00:22.40 bitrate=N/A speed=13.2x
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```
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Then... Congratulations! The patch works.
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