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Better audio sync for 60 fps

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dec05eba
2024-05-13 19:27:06 +02:00
parent 0288b94ecf
commit 133c3a22b9
1 changed files with 8 additions and 6 deletions
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14
src/main.cpp
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@@ -1044,18 +1044,20 @@ static void run_recording_saved_script_async(const char *script_file, const char
}
}
static double audio_codec_get_desired_delay(AudioCodec audio_codec) {
static double audio_codec_get_desired_delay(AudioCodec audio_codec, int fps) {
const double fps_inv = 1.0 / (double)fps;
const double base = 0.01 + 1.0/165.0;
switch(audio_codec) {
case AudioCodec::OPUS:
return 0.01;
return std::max(0.0, base - fps_inv);
case AudioCodec::AAC:
return 0.0185 * 2.0;
return std::max(0.0, (base + 0.008) * 2.0 - fps_inv);
case AudioCodec::FLAC:
// TODO: Test
return 0.01;
return std::max(0.0, base - fps_inv);
}
assert(false);
return 0.01;
return std::max(0.0, base - fps_inv);
}
struct AudioDevice {
@@ -2336,7 +2338,7 @@ int main(int argc, char **argv) {
const double audio_fps = (double)audio_codec_context->sample_rate / (double)audio_codec_context->frame_size;
const double timeout_sec = 1000.0 / audio_fps / 1000.0;
const double audio_startup_time_seconds = force_no_audio_offset ? 0 : audio_codec_get_desired_delay(audio_codec);// * ((double)audio_codec_context->frame_size / 1024.0);
const double audio_startup_time_seconds = force_no_audio_offset ? 0 : audio_codec_get_desired_delay(audio_codec, fps);// * ((double)audio_codec_context->frame_size / 1024.0);
const double num_audio_frames_shift = audio_startup_time_seconds / timeout_sec;
std::vector<AudioDevice> audio_devices;