PapaTutuWawa/gpu-screen-recorder
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Improve quality, especially when using h264. Force disable h264 for now because quality is not as good

Browse Source
This commit is contained in:
dec05eba 2022-04-07 14:02:00 +02:00
parent 94af0aeec4
commit 066cfae84c
2 changed files with 29 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
README.md
View File

@ -12,9 +12,8 @@ NvFBC doesn't work with PRIME, so if you are using PRIME then you can't record t
If you are using a variable refresh rate monitor, then choose to record "screen-direct". This will allow variable refresh rate to work when recording fullscreen applications. Note that some applications such as mpv will not work in fullscreen mode. A fix is being developed for this. If you are using a variable refresh rate monitor, then choose to record "screen-direct". This will allow variable refresh rate to work when recording fullscreen applications. Note that some applications such as mpv will not work in fullscreen mode. A fix is being developed for this.
# Performance # Performance
When recording a 4k game, fps drops from 30 to 7 when using OBS Studio, however when using this screen recorder When recording a 4k game, fps drops from 30 to 7 when using OBS Studio, however when using this screen recorder the fps remains at 30.\
the fps remains at 30. It is recommended to save the video to a SSD because of the large file size, which a slow HDD might not be fast enough to handle.
# Installation # Installation
If you are running an Arch Linux based distro, then you can find gpu screen recorder on aur under the name gpu-screen-recorder-git (`yay -S gpu-screen-recorder-git`).\ If you are running an Arch Linux based distro, then you can find gpu screen recorder on aur under the name gpu-screen-recorder-git (`yay -S gpu-screen-recorder-git`).\
If you are running an Ubuntu based distro then run `install_ubuntu.sh` as root: `sudo ./install_ubuntu.sh`.\ If you are running an Ubuntu based distro then run `install_ubuntu.sh` as root: `sudo ./install_ubuntu.sh`.\

38
src/main.cpp
View File

@ -423,7 +423,7 @@ static AVCodecContext *create_video_codec_context(AVFormatContext *av_format_con
codec_context->codec_id = codec->id; codec_context->codec_id = codec->id;
codec_context->width = record_width & ~1; codec_context->width = record_width & ~1;
codec_context->height = record_height & ~1; codec_context->height = record_height & ~1;
codec_context->bit_rate = 7500000 + (codec_context->width * codec_context->height) / 2; codec_context->bit_rate = 12500000 + (codec_context->width * codec_context->height) / 2;
// Timebase: This is the fundamental unit of time (in seconds) in terms // Timebase: This is the fundamental unit of time (in seconds) in terms
// of which frame timestamps are represented. For fixed-fps content, // of which frame timestamps are represented. For fixed-fps content,
// timebase should be 1/framerate and timestamp increments should be // timebase should be 1/framerate and timestamp increments should be
@ -435,31 +435,46 @@ static AVCodecContext *create_video_codec_context(AVFormatContext *av_format_con
codec_context->sample_aspect_ratio.num = 0; codec_context->sample_aspect_ratio.num = 0;
codec_context->sample_aspect_ratio.den = 0; codec_context->sample_aspect_ratio.den = 0;
codec_context->gop_size = fps * 2; codec_context->gop_size = fps * 2;
codec_context->max_b_frames = use_hevc ? 0 : 2; codec_context->max_b_frames = 0;
codec_context->pix_fmt = AV_PIX_FMT_CUDA; codec_context->pix_fmt = AV_PIX_FMT_CUDA;
codec_context->color_range = AVCOL_RANGE_JPEG; codec_context->color_range = AVCOL_RANGE_JPEG;
switch(video_quality) { switch(video_quality) {
case VideoQuality::MEDIUM: case VideoQuality::MEDIUM:
codec_context->bit_rate = 5000000 + (codec_context->width * codec_context->height) / 2; codec_context->bit_rate = 10000000 + (codec_context->width * codec_context->height) / 2;
codec_context->qmin = 30; if(use_hevc) {
codec_context->qmax = 51; codec_context->qmin = 20;
codec_context->qmax = 35;
} else {
codec_context->qmin = 5;
codec_context->qmax = 20;
}
//av_opt_set(codec_context->priv_data, "preset", "slow", 0); //av_opt_set(codec_context->priv_data, "preset", "slow", 0);
//av_opt_set(codec_context->priv_data, "profile", "high", 0); //av_opt_set(codec_context->priv_data, "profile", "high", 0);
//codec_context->profile = FF_PROFILE_H264_HIGH; //codec_context->profile = FF_PROFILE_H264_HIGH;
//av_opt_set(codec_context->priv_data, "preset", "p4", 0); //av_opt_set(codec_context->priv_data, "preset", "p4", 0);
break; break;
case VideoQuality::HIGH: case VideoQuality::HIGH:
codec_context->qmin = 20; if(use_hevc) {
codec_context->qmax = 40; codec_context->qmin = 17;
codec_context->qmax = 30;
} else {
codec_context->qmin = 5;
codec_context->qmax = 15;
}
//av_opt_set(codec_context->priv_data, "preset", "slow", 0); //av_opt_set(codec_context->priv_data, "preset", "slow", 0);
//av_opt_set(codec_context->priv_data, "profile", "high", 0); //av_opt_set(codec_context->priv_data, "profile", "high", 0);
//codec_context->profile = FF_PROFILE_H264_HIGH; //codec_context->profile = FF_PROFILE_H264_HIGH;
//av_opt_set(codec_context->priv_data, "preset", "p5", 0); //av_opt_set(codec_context->priv_data, "preset", "p5", 0);
break; break;
case VideoQuality::ULTRA: case VideoQuality::ULTRA:
codec_context->bit_rate = 10000000 + (codec_context->width * codec_context->height) / 2; codec_context->bit_rate = 15000000 + (codec_context->width * codec_context->height) / 2;
codec_context->qmin = 16; if(use_hevc) {
codec_context->qmax = 30; codec_context->qmin = 16;
codec_context->qmax = 25;
} else {
codec_context->qmin = 3;
codec_context->qmax = 13;
}
//av_opt_set(codec_context->priv_data, "preset", "veryslow", 0); //av_opt_set(codec_context->priv_data, "preset", "veryslow", 0);
//av_opt_set(codec_context->priv_data, "profile", "high", 0); //av_opt_set(codec_context->priv_data, "profile", "high", 0);
//codec_context->profile = FF_PROFILE_H264_HIGH; //codec_context->profile = FF_PROFILE_H264_HIGH;
@ -1095,7 +1110,8 @@ int main(int argc, char **argv) {
av_format_context->flags |= AVFMT_FLAG_GENPTS; av_format_context->flags |= AVFMT_FLAG_GENPTS;
const AVOutputFormat *output_format = av_format_context->oformat; const AVOutputFormat *output_format = av_format_context->oformat;
bool use_hevc = strcmp(window_str, "screen") == 0 || strcmp(window_str, "screen-direct") == 0; //bool use_hevc = strcmp(window_str, "screen") == 0 || strcmp(window_str, "screen-direct") == 0;
bool use_hevc = true;
if(use_hevc && strcmp(container_format, "flv") == 0) { if(use_hevc && strcmp(container_format, "flv") == 0) {
use_hevc = false; use_hevc = false;
fprintf(stderr, "Warning: hevc is not compatible with flv, falling back to h264 instead.\n"); fprintf(stderr, "Warning: hevc is not compatible with flv, falling back to h264 instead.\n");