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rigaya / NVEnc

NVENCによる高速エンコードの性能実験
https://rigaya34589.blog.fc2.com/blog-category-17.html
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`--video-metadata clear` and `--audio-metadata clear` optimization #238

Closed shookgao closed 4 weeks ago

shookgao commented 4 years ago

@rigaya HI, These parameters can now work normally, but in the output file generated after use, the video and audio have no bit rate and stream size. Hope to optimize it again, thanks!

rigaya commented 4 years ago

Do you mean you're getting output of 0 byte? I've been trying with a small sample by options below, but having no problem.

x64\NVEncC64.exe -i input.mkv -o test.mkv -c hevc --profile main10 --audio-copy --audio-metadata clear --video-metadata clear

Output seems to be fine here.

image

shookgao commented 4 years ago

My system is Ubuntu 18.04, my command is like this: nvencc --avhw --profile main10 --preset quality --codec hevc --audio-codec aac --video-metadata clear --audio-metadata clear -i i.mkv -o o.mkv The result is:

rigaya commented 4 years ago

So you mean the output file is fine, but the MediaInfo cannot get the proper bitrate. I don't know how MediaInfo is getting the bitrate information, as it is not an information included in the header.

It seems to be not related to --video-metadata clear/audio-metadata clear. It happens without them when I use your options, and I've also checked the source code but the metadata options does nothing with bitrate. I cannot find something to do with this problem.

I've found that it seems to be some kind of problem when the output is in mkv format with aac. There seems to be no problem when you output in mp4 format, or the audio is in other codec (for example, ac3).

rigaya commented 4 weeks ago

I’ll close this issue as the topic has been answered.