PapaTutuWawa/gpu-screen-recorder
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Vastly improve quality by using qmin and qmax (uses higher bitrate)

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This commit is contained in:
dec05eba 2020-08-29 04:02:34 +02:00
parent 9f25b2e8e5
commit 0780efe87d
1 changed files with 16 additions and 5 deletions
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21
src/main.cpp
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@ -16,6 +16,7 @@
*/
#include <assert.h>
#include <libavutil/pixfmt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string>
@ -100,6 +101,7 @@ static bool x11_supports_composite_named_window_pixmap(Display *dpy) {
}
static int x11_error_handler(Display *dpy, XErrorEvent *ev) {
#if 0
char type_str[128];
XGetErrorText(dpy, ev->type, type_str, sizeof(type_str));
@ -117,6 +119,7 @@ static int x11_error_handler(Display *dpy, XErrorEvent *ev) {
type_str,
ev->request_code, major_opcode_str,
ev->minor_code, minor_opcode_str);
#endif
return 0;
}
@ -422,12 +425,14 @@ static AVStream *add_video_stream(AVFormatContext *av_format_context, AVCodec **
fprintf(stderr, "video stream id: %d\n", stream->id);
AVCodecContext *codec_context = stream->codec;
//double fps_ratio = (double)fps / 30.0;
assert((*codec)->type == AVMEDIA_TYPE_VIDEO);
codec_context->codec_id = (*codec)->id;
fprintf(stderr, "codec id: %d\n", (*codec)->id);
codec_context->width = window_pixmap.texture_width & ~1;
codec_context->height = window_pixmap.texture_height & ~1;
codec_context->bit_rate = 3500000 + (codec_context->width * codec_context->height) / 2; //5000000 * ((double)fps / 30.0) + (codec_context->width * codec_context->height) / 2;
codec_context->bit_rate = 4000000 + (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
@ -438,9 +443,15 @@ static AVStream *add_video_stream(AVFormatContext *av_format_context, AVCodec **
// codec_context->framerate.den = 1;
codec_context->sample_aspect_ratio.num = 0;
codec_context->sample_aspect_ratio.den = 0;
codec_context->gop_size = 250;//fps * 2;
codec_context->gop_size = 40;//fps * 2;
codec_context->max_b_frames = 2;
codec_context->pix_fmt = AV_PIX_FMT_CUDA;
codec_context->color_range = AVCOL_RANGE_JPEG;
codec_context->qmin = 16;
codec_context->qmax = 27;
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;
stream->time_base = codec_context->time_base;
stream->avg_frame_rate = av_inv_q(codec_context->time_base);
if (codec_context->codec_id == AV_CODEC_ID_MPEG1VIDEO)
@ -585,7 +596,7 @@ static void usage() {
fprintf(stderr, " -a Audio device to record from (pulse audio device). Optional, disabled by default.\n");
fprintf(stderr, " -r Replay buffer size in seconds. If this is set, then only the last seconds as set by this option will be stored"
" and the video will only be saved when the gpu-screen-recorder is closed. This feature is similar to Nvidia's instant replay feature."
" This option has be between 5 and 1200. Note that the replay buffer size will not always be precise, because of keyframes. Optional, disable by default.\n");
" This option has be between 5 and 1200. Note that the replay buffer size will not always be precise, because of keyframes. Optional, disabled by default.\n");
fprintf(stderr, " -o The output file path. If omitted, then the encoded data is sent to stdout.\n");
exit(1);
}
@ -699,10 +710,10 @@ int main(int argc, char **argv) {
glfwSwapInterval(0);
glfwHideWindow(window);
#if defined(DEBUG)
//#if defined(DEBUG)
XSetErrorHandler(x11_error_handler);
XSetIOErrorHandler(x11_io_error_handler);
#endif
//#endif
glewExperimental = GL_TRUE;
GLenum nGlewError = glewInit();