Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion. Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules. |
3rd August 2020, 20:19 | #1 | Link |
Registered User
Join Date: Jul 2020
Posts: 2
|
FFmpeg and h264_vaapi
Hello,
Not sure if this is the right forum. I have an Intel CPU and I wanted to use hardware acceleration to encode videos in H.264. Without the hardware acceleration, I am currently having good results with the veryslow preset (which is using CRF 23 I believe): Code:
ffmpeg -i <input> -acodec aac -vcodec libx264 -preset veryslow -y <output> Code:
ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i <input> -acodec aac -vcodec h264_vaapi -b:v 6M -y <output> Is there any way I can improve the quality of the results without messing too much with the parameters depending on the video ? Thanks |
4th August 2020, 06:38 | #3 | Link |
Registered User
Join Date: Jun 2002
Location: On thin ice
Posts: 6,846
|
It would be interesting to know how many percent more bits hw encoding needs in general to match quality of software encoding.
__________________
https://github.com/stax76/software-list https://www.youtube.com/@stax76/playlists |
Tags |
crf, ffmpeg, h264_vaapi |
Thread Tools | Search this Thread |
Display Modes | |
|
|