I'm a 980TI owner, and I'm using mediacoder with NVENC support.
The problem is that I can't set a great quality and high bitrate.
For example: I have a music video with 3,54GB size (H264, 1440x1080p,39mins).
If I convert it to H265 codec, I get always a ~600MB~ file.
I've tried to use VBR with 16MBit bitrate, CF 1, CF 0, without success.
How can I improve the bitrate? H265 permits to half the size of the file, with the same quality... But with 600MByte/file I get worse quality.
I can't set a better quality using NVENC+H265
Re: I can't set a better quality using NVENC+H265
I had the same problem. The solution for me was:
1. Open console (Toggle console window F6).
2. On the "video" tab click on button "rate mode".
You will see the same setting as in main window. Only every setting available at the same time.
Now by try and error you can set the settings in that window and, then start encoding and observe the commands in console window. Specifically parameters of those commands do matter.
I played with this tool for only 3 hours so far and I experience the same problem like you. I had some success in first 10 minutes but then after playing with the settings it all got to the same LQ file output no matter what I choose for that H265 and NVENC.
And now since I know the above method will play with it more.
1. Open console (Toggle console window F6).
2. On the "video" tab click on button "rate mode".
You will see the same setting as in main window. Only every setting available at the same time.
Now by try and error you can set the settings in that window and, then start encoding and observe the commands in console window. Specifically parameters of those commands do matter.
I played with this tool for only 3 hours so far and I experience the same problem like you. I had some success in first 10 minutes but then after playing with the settings it all got to the same LQ file output no matter what I choose for that H265 and NVENC.
And now since I know the above method will play with it more.
Re: I can't set a better quality using NVENC+H265
I've got the same problem, the bitrate and the file size is the same no matter what I set.
Pls help!
Pls help!
Re: I can't set a better quality using NVENC+H265
I'm trying any options. The encoder seems ignore CF, VBR or ABR setting.
"QP for all frames" on advanced makes huge files...
Are you looking for a fix?
"QP for all frames" on advanced makes huge files...
Are you looking for a fix?
Re: I can't set a better quality using NVENC+H265
I have the same problem...
Cannot force better quality with Nvenc and Two pass/VBR expecially with gray background I have extreme unwanted compression.
The only solution for me it's to set constant QP... even wit an extreme VBR quality i have the same blocky gray area as shown in the image I posted (left side)
PLease HELP MEEEE!!!
http://imgur.com/6vlDXra
Cannot force better quality with Nvenc and Two pass/VBR expecially with gray background I have extreme unwanted compression.
The only solution for me it's to set constant QP... even wit an extreme VBR quality i have the same blocky gray area as shown in the image I posted (left side)
PLease HELP MEEEE!!!
http://imgur.com/6vlDXra