PapaTutuWawa/gpu-screen-recorder
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Use p4 preset on older gpus (kepler family) because of performance

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with p7
This commit is contained in:
dec05eba
2022-10-11 18:57:09 +02:00
parent 1ca4dcfbdb
commit 9d185f3091
5 changed files with 94 additions and 36 deletions
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110
src/main.cpp
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@@ -596,20 +596,24 @@ static AVCodecContext* create_audio_codec_context(AVFormatContext *av_format_con
return codec_context;
}
static const AVCodec* find_h264_encoder() {
const AVCodec *codec = avcodec_find_encoder_by_name("h264_nvenc");
if(!codec)
codec = avcodec_find_encoder_by_name("nvenc_h264");
return codec;
}
static const AVCodec* find_h265_encoder() {
const AVCodec *codec = avcodec_find_encoder_by_name("hevc_nvenc");
if(!codec)
codec = avcodec_find_encoder_by_name("nvenc_hevc");
return codec;
}
static AVCodecContext *create_video_codec_context(AVFormatContext *av_format_context,
VideoQuality video_quality,
int record_width, int record_height,
int fps, VideoCodec video_codec, bool is_livestream) {
const AVCodec *codec = avcodec_find_encoder_by_name(video_codec == VideoCodec::H265 ? "hevc_nvenc" : "h264_nvenc");
if (!codec) {
codec = avcodec_find_encoder_by_name(video_codec == VideoCodec::H265 ? "nvenc_hevc" : "nvenc_h264");
}
if (!codec) {
fprintf(
stderr,
"Error: Could not find %s encoder\n", video_codec == VideoCodec::H265 ? "hevc" : "h264");
exit(1);
}
int fps, const AVCodec *codec, bool is_livestream) {
AVCodecContext *codec_context = avcodec_alloc_context3(codec);
@@ -642,7 +646,7 @@ static AVCodecContext *create_video_codec_context(AVFormatContext *av_format_con
codec_context->max_b_frames = 0;
codec_context->pix_fmt = AV_PIX_FMT_CUDA;
codec_context->color_range = AVCOL_RANGE_JPEG;
if(video_codec == VideoCodec::H265)
if(codec->id == AV_CODEC_ID_HEVC)
codec_context->codec_tag = MKTAG('h', 'v', 'c', '1');
switch(video_quality) {
case VideoQuality::MEDIUM:
@@ -743,7 +747,7 @@ static AVBufferRef* dummy_hw_frame_init(size_t size) {
static void open_video(AVCodecContext *codec_context,
WindowPixmap &window_pixmap, AVBufferRef **device_ctx,
CUgraphicsResource *cuda_graphics_resource, CUcontext cuda_context, bool use_nvfbc, VideoQuality video_quality, bool is_livestream) {
CUgraphicsResource *cuda_graphics_resource, CUcontext cuda_context, bool use_nvfbc, VideoQuality video_quality, bool is_livestream, bool very_old_gpu) {
int ret;
*device_ctx = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_CUDA);
@@ -810,7 +814,15 @@ static void open_video(AVCodecContext *codec_context,
// //av_dict_set(&options, "preset", "llhq", 0);
//}
av_dict_set(&options, "preset", "p7", 0);
// Fuck nvidia and ffmpeg, I want to use a good preset for the gpu but all gpus prefer different
// presets. Nvidia and ffmpeg used to support "hq" preset that chose the best preset for the gpu
// with pretty good performance but you now have to choose p1-p7, which are gpu agnostic and on
// older gpus p5-p7 slow the gpu down to a crawl...
// "hq" is now just an alias for p7 in ffmpeg :(
if(very_old_gpu)
av_dict_set(&options, "preset", "p4", 0);
else
av_dict_set(&options, "preset", "p7", 0);
av_dict_set(&options, "tune", "hq", 0);
av_dict_set(&options, "rc", "constqp", 0);
@@ -1340,21 +1352,18 @@ int main(int argc, char **argv) {
const double target_fps = 1.0 / (double)fps;
Display *dpy = XOpenDisplay(nullptr);
if (!dpy) {
fprintf(stderr, "Error: Failed to open display\n");
return 1;
}
XSetErrorHandler(x11_error_handler);
XSetIOErrorHandler(x11_io_error_handler);
WindowPixmap window_pixmap;
Display *dpy = nullptr;
Window window = None;
if(src_window_id) {
dpy = XOpenDisplay(nullptr);
if (!dpy) {
fprintf(stderr, "Error: Failed to open display\n");
return 1;
}
//#if defined(DEBUG)
XSetErrorHandler(x11_error_handler);
XSetIOErrorHandler(x11_io_error_handler);
//#endif
bool has_name_pixmap = x11_supports_composite_named_window_pixmap(dpy);
if (!has_name_pixmap) {
fprintf(stderr, "Error: XCompositeNameWindowPixmap is not supported by "
@@ -1401,11 +1410,37 @@ int main(int argc, char **argv) {
window_pixmap.texture_height = window_height;
}
bool very_old_gpu = false;
bool gl_loaded = window;
if(!gl_loaded) {
if(!gl.load()) {
fprintf(stderr, "Error: Failed to load opengl\n");
return 1;
}
}
const unsigned char *gl_renderer = gl.glGetString(GL_RENDERER);
if(gl_renderer) {
int gpu_num = 1000;
sscanf((const char*)gl_renderer, "%*s %*s %*s %d", &gpu_num);
if(gpu_num < 900) {
fprintf(stderr, "Info: your gpu appears to be very old (older than maxwell architecture). Switching to lower preset\n");
very_old_gpu = true;
}
}
if(!gl_loaded)
gl.unload();
if(strcmp(codec_to_use, "auto") == 0) {
const AVCodec *h265_codec = find_h265_encoder();
// h265 generally allows recording at a higher resolution than h264 on nvidia cards. On a gtx 1080 4k is the max resolution for h264 but for h265 it's 8k.
// Another important info is that when recording at a higher fps than.. 60? h265 has very bad performance. For example when recording at 144 fps the fps drops to 1
// while with h264 the fps doesn't drop.
if(fps > 60) {
if(!h265_codec) {
fprintf(stderr, "Info: using h264 encoder because a codec was not specified and your gpu does not support h265\n");
} else if(fps > 60) {
fprintf(stderr, "Info: using h264 encoder because a codec was not specified and fps is more than 60\n");
codec_to_use = "h264";
video_codec = VideoCodec::H264;
@@ -1416,6 +1451,21 @@ int main(int argc, char **argv) {
}
}
const AVCodec *video_codec_f = nullptr;
switch(video_codec) {
case VideoCodec::H264:
video_codec_f = find_h264_encoder();
break;
case VideoCodec::H265:
video_codec_f = find_h265_encoder();
break;
}
if(!video_codec_f) {
fprintf(stderr, "Error: your gpu does not support '%s' video codec\n", video_codec == VideoCodec::H264 ? "h264" : "h265");
exit(2);
}
// Video start
AVFormatContext *av_format_context;
// The output format is automatically guessed by the file extension
@@ -1448,13 +1498,13 @@ int main(int argc, char **argv) {
AVStream *video_stream = nullptr;
std::vector<AudioTrack> audio_tracks;
AVCodecContext *video_codec_context = create_video_codec_context(av_format_context, quality, record_width, record_height, fps, video_codec, is_livestream);
AVCodecContext *video_codec_context = create_video_codec_context(av_format_context, quality, record_width, record_height, fps, video_codec_f, is_livestream);
if(replay_buffer_size_secs == -1)
video_stream = create_stream(av_format_context, video_codec_context);
AVBufferRef *device_ctx;
CUgraphicsResource cuda_graphics_resource;
open_video(video_codec_context, window_pixmap, &device_ctx, &cuda_graphics_resource, cu_ctx, !src_window_id, quality, is_livestream);
open_video(video_codec_context, window_pixmap, &device_ctx, &cuda_graphics_resource, cu_ctx, !src_window_id, quality, is_livestream, very_old_gpu);
if(video_stream)
avcodec_parameters_from_context(video_stream->codecpar, video_codec_context);
@@ -1498,7 +1548,7 @@ int main(int argc, char **argv) {
// av_frame_free(&rgb_frame);
// avcodec_close(av_codec_context);
if(dpy)
if(src_window_id)
XSelectInput(dpy, src_window_id, StructureNotifyMask | ExposureMask);
/*