diff options
| -rw-r--r-- | README.md | 5 | ||||
| -rw-r--r-- | src/main.cpp | 38 |
2 files changed, 29 insertions, 14 deletions
@@ -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. # Performance -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. - +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.\ +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 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`.\ diff --git a/src/main.cpp b/src/main.cpp index e76f60b..7552ed6 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -423,7 +423,7 @@ static AVCodecContext *create_video_codec_context(AVFormatContext *av_format_con codec_context->codec_id = codec->id; codec_context->width = record_width & ~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 // of which frame timestamps are represented. For fixed-fps content, // 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.den = 0; 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->color_range = AVCOL_RANGE_JPEG; switch(video_quality) { case VideoQuality::MEDIUM: - codec_context->bit_rate = 5000000 + (codec_context->width * codec_context->height) / 2; - codec_context->qmin = 30; - codec_context->qmax = 51; + codec_context->bit_rate = 10000000 + (codec_context->width * codec_context->height) / 2; + if(use_hevc) { + 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, "profile", "high", 0); //codec_context->profile = FF_PROFILE_H264_HIGH; //av_opt_set(codec_context->priv_data, "preset", "p4", 0); break; case VideoQuality::HIGH: - codec_context->qmin = 20; - codec_context->qmax = 40; + if(use_hevc) { + 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, "profile", "high", 0); //codec_context->profile = FF_PROFILE_H264_HIGH; //av_opt_set(codec_context->priv_data, "preset", "p5", 0); break; case VideoQuality::ULTRA: - codec_context->bit_rate = 10000000 + (codec_context->width * codec_context->height) / 2; - codec_context->qmin = 16; - codec_context->qmax = 30; + codec_context->bit_rate = 15000000 + (codec_context->width * codec_context->height) / 2; + if(use_hevc) { + 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, "profile", "high", 0); //codec_context->profile = FF_PROFILE_H264_HIGH; @@ -1095,7 +1110,8 @@ int main(int argc, char **argv) { av_format_context->flags |= AVFMT_FLAG_GENPTS; 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) { use_hevc = false; fprintf(stderr, "Warning: hevc is not compatible with flv, falling back to h264 instead.\n"); |