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Add -fallback-cpu-encoding option to use cpu encoding (x264) if gpu encoding is not available on the system

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dec05eba
2025-10-24 11:44:18 +02:00
parent 57ac400eab
commit 7d4a4068ff
4 changed files with 74 additions and 54 deletions
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10
src/args_parser.c
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@@ -195,7 +195,7 @@ static void usage_header() {
"[-k h264|hevc|av1|vp8|vp9|hevc_hdr|av1_hdr|hevc_10bit|av1_10bit] [-ac aac|opus|flac] [-ab <bitrate>] [-oc yes|no] [-fm cfr|vfr|content] "
"[-bm auto|qp|vbr|cbr] [-cr limited|full] [-tune performance|quality] [-df yes|no] [-sc <script_path>] [-p <plugin_path>] "
"[-cursor yes|no] [-keyint <value>] [-restore-portal-session yes|no] [-portal-session-token-filepath filepath] [-encoder gpu|cpu] "
"[-o <output_file>] [-ro <output_directory>] [--list-capture-options [card_path]] [--list-audio-devices] [--list-application-audio] "
"[-fallback-cpu-encoding yes|no] [-o <output_file>] [-ro <output_directory>] [--list-capture-options [card_path]] [--list-audio-devices] [--list-application-audio] "
"[-v yes|no] [-gl-debug yes|no] [--version] [-h|--help]\n", program_name);
fflush(stdout);
}
@@ -342,6 +342,12 @@ static void usage_full() {
printf(" Which device should be used for video encoding. Should either be 'gpu' or 'cpu'. 'cpu' option currently only work with h264 codec option (-k).\n");
printf(" Optional, set to 'gpu' by default.\n");
printf("\n");
printf(" -fallback-cpu-encoding\n");
printf(" If this is set to 'yes' and GPU encoding is not available on the system then CPU encoding will be used instead. Optional, set to 'no' by default.\n");
printf(" If the fallback to CPU encoding happens then h264 codec will forcefully be used.\n");
printf(" This should ideally not be used. Instead properly install vaapi on your system to encode the video with your GPU.\n");
printf(" Some very old GPUs dont support video encoding in which case this option may be used.\n");
printf("\n");
printf(" --info\n");
printf(" List info about the system. Lists the following information (prints them to stdout and exits):\n");
printf(" Supported video codecs (h264, h264_software, hevc, hevc_hdr, hevc_10bit, av1, av1_hdr, av1_10bit, vp8, vp9) and image codecs (jpeg, png) (if supported).\n");
@@ -470,6 +476,7 @@ static bool args_parser_set_values(args_parser *self) {
self->restore_portal_session = args_get_boolean_by_key(self->args, NUM_ARGS, "-restore-portal-session", false);
self->restart_replay_on_save = args_get_boolean_by_key(self->args, NUM_ARGS, "-restart-replay-on-save", false);
self->overclock = args_get_boolean_by_key(self->args, NUM_ARGS, "-oc", false);
self->fallback_cpu_encoding = args_get_boolean_by_key(self->args, NUM_ARGS, "-fallback-cpu-encoding", false);
self->audio_bitrate = args_get_i64_by_key(self->args, NUM_ARGS, "-ab", 0);
self->audio_bitrate *= 1000LL;
@@ -756,6 +763,7 @@ bool args_parser_parse(args_parser *self, int argc, char **argv, const args_hand
self->args[arg_index++] = (Arg){ .key = "-restore-portal-session", .optional = true, .list = false, .type = ARG_TYPE_BOOLEAN };
self->args[arg_index++] = (Arg){ .key = "-portal-session-token-filepath", .optional = true, .list = false, .type = ARG_TYPE_STRING };
self->args[arg_index++] = (Arg){ .key = "-encoder", .optional = true, .list = false, .type = ARG_TYPE_ENUM, .enum_values = video_encoder_enums, .num_enum_values = sizeof(video_encoder_enums)/sizeof(ArgEnum) };
self->args[arg_index++] = (Arg){ .key = "-fallback-cpu-encoding", .optional = true, .list = false, .type = ARG_TYPE_BOOLEAN };
self->args[arg_index++] = (Arg){ .key = "-replay-storage", .optional = true, .list = false, .type = ARG_TYPE_ENUM, .enum_values = replay_storage_enums, .num_enum_values = sizeof(replay_storage_enums)/sizeof(ArgEnum) };
self->args[arg_index++] = (Arg){ .key = "-p", .optional = true, .list = true, .type = ARG_TYPE_STRING };
assert(arg_index == NUM_ARGS);

112
src/main.cpp
View File

@@ -1637,6 +1637,27 @@ static bool get_supported_video_codecs(gsr_egl *egl, gsr_video_codec video_codec
return false;
}
static bool get_supported_video_codecs_with_cpu_fallback(gsr_egl *egl, args_parser *args_parser, bool cleanup, gsr_supported_video_codecs *video_codecs) {
if(get_supported_video_codecs(egl, args_parser->video_codec, args_parser->video_encoder == GSR_VIDEO_ENCODER_HW_CPU, cleanup, video_codecs))
return true;
if(args_parser->video_encoder == GSR_VIDEO_ENCODER_HW_CPU || !args_parser->fallback_cpu_encoding)
return false;
fprintf(stderr, "gsr warning: gpu encoding is not available on your system, trying cpu encoding instead because -fallback-cpu-encoding is enabled. Install the proper vaapi drivers on your system (if supported) if you experience performance issues\n");
if(get_supported_video_codecs(egl, GSR_VIDEO_CODEC_H264, true, cleanup, video_codecs)) {
if(args_parser->video_codec != (gsr_video_codec)GSR_VIDEO_CODEC_AUTO && args_parser->video_codec != GSR_VIDEO_CODEC_H264) {
fprintf(stderr, "gsr warning: cpu encoding is used but video codec isn't set to h264. Forcing video codec to h264\n");
args_parser->video_codec = GSR_VIDEO_CODEC_H264;
}
args_parser->video_encoder = GSR_VIDEO_ENCODER_HW_CPU;
return true;
}
return false;
}
static void xwayland_check_callback(const gsr_monitor *monitor, void *userdata) {
bool *xwayland_found = (bool*)userdata;
if(monitor->name_len >= 8 && strncmp(monitor->name, "XWAYLAND", 8) == 0)
@@ -2723,36 +2744,30 @@ static void print_codec_error(gsr_video_codec video_codec) {
" If your GPU doesn't support hardware accelerated video encoding then you can use '-encoder cpu' option to encode with your cpu instead.\n", video_codec_name, video_codec_name, video_codec_name);
}
static const AVCodec* pick_video_codec(gsr_video_codec *video_codec, gsr_egl *egl, bool use_software_video_encoder, bool video_codec_auto, bool is_flv, bool *low_power, gsr_supported_video_codecs *supported_video_codecs) {
static const AVCodec* pick_video_codec(gsr_egl *egl, args_parser *args_parser, bool is_flv, bool *low_power, gsr_supported_video_codecs *supported_video_codecs) {
// TODO: software encoder for hevc, av1, vp8 and vp9
*low_power = false;
const AVCodec *video_codec_f = get_av_codec_if_supported(*video_codec, egl, use_software_video_encoder, supported_video_codecs);
const AVCodec *video_codec_f = get_av_codec_if_supported(args_parser->video_codec, egl, args_parser->video_encoder == GSR_VIDEO_ENCODER_HW_CPU, supported_video_codecs);
if(!video_codec_auto && !video_codec_f && !is_flv) {
switch(*video_codec) {
if(!video_codec_f && !is_flv && args_parser->video_encoder != GSR_VIDEO_ENCODER_HW_CPU) {
switch(args_parser->video_codec) {
case GSR_VIDEO_CODEC_H264: {
fprintf(stderr, "gsr warning: selected video codec h264 is not supported, trying hevc instead\n");
*video_codec = GSR_VIDEO_CODEC_HEVC;
if(supported_video_codecs->hevc.supported)
video_codec_f = get_ffmpeg_video_codec(*video_codec, egl->gpu_info.vendor);
args_parser->video_codec = GSR_VIDEO_CODEC_HEVC;
break;
}
case GSR_VIDEO_CODEC_HEVC:
case GSR_VIDEO_CODEC_HEVC_HDR:
case GSR_VIDEO_CODEC_HEVC_10BIT: {
fprintf(stderr, "gsr warning: selected video codec hevc is not supported, trying h264 instead\n");
*video_codec = GSR_VIDEO_CODEC_H264;
if(supported_video_codecs->h264.supported)
video_codec_f = get_ffmpeg_video_codec(*video_codec, egl->gpu_info.vendor);
args_parser->video_codec = GSR_VIDEO_CODEC_H264;
break;
}
case GSR_VIDEO_CODEC_AV1:
case GSR_VIDEO_CODEC_AV1_HDR:
case GSR_VIDEO_CODEC_AV1_10BIT: {
fprintf(stderr, "gsr warning: selected video codec av1 is not supported, trying h264 instead\n");
*video_codec = GSR_VIDEO_CODEC_H264;
if(supported_video_codecs->h264.supported)
video_codec_f = get_ffmpeg_video_codec(*video_codec, egl->gpu_info.vendor);
args_parser->video_codec = GSR_VIDEO_CODEC_H264;
break;
}
case GSR_VIDEO_CODEC_VP8:
@@ -2761,39 +2776,37 @@ static const AVCodec* pick_video_codec(gsr_video_codec *video_codec, gsr_egl *eg
break;
case GSR_VIDEO_CODEC_H264_VULKAN: {
fprintf(stderr, "gsr warning: selected video codec h264_vulkan is not supported, trying h264 instead\n");
*video_codec = GSR_VIDEO_CODEC_H264;
args_parser->video_codec = GSR_VIDEO_CODEC_H264;
// Need to do a query again because this time it's without vulkan
if(!get_supported_video_codecs(egl, *video_codec, use_software_video_encoder, true, supported_video_codecs)) {
if(!get_supported_video_codecs_with_cpu_fallback(egl, args_parser, true, supported_video_codecs)) {
fprintf(stderr, "gsr error: failed to query for supported video codecs\n");
print_codec_error(*video_codec);
print_codec_error(args_parser->video_codec);
_exit(11);
}
if(supported_video_codecs->h264.supported)
video_codec_f = get_ffmpeg_video_codec(*video_codec, egl->gpu_info.vendor);
break;
}
case GSR_VIDEO_CODEC_HEVC_VULKAN: {
fprintf(stderr, "gsr warning: selected video codec hevc_vulkan is not supported, trying hevc instead\n");
*video_codec = GSR_VIDEO_CODEC_HEVC;
args_parser->video_codec = GSR_VIDEO_CODEC_HEVC;
// Need to do a query again because this time it's without vulkan
if(!get_supported_video_codecs(egl, *video_codec, use_software_video_encoder, true, supported_video_codecs)) {
if(!get_supported_video_codecs_with_cpu_fallback(egl, args_parser, true, supported_video_codecs)) {
fprintf(stderr, "gsr error: failed to query for supported video codecs\n");
print_codec_error(*video_codec);
print_codec_error(args_parser->video_codec);
_exit(11);
}
if(supported_video_codecs->hevc.supported)
video_codec_f = get_ffmpeg_video_codec(*video_codec, egl->gpu_info.vendor);
break;
}
}
video_codec_f = get_av_codec_if_supported(args_parser->video_codec, egl, args_parser->video_encoder == GSR_VIDEO_ENCODER_HW_CPU, supported_video_codecs);
}
if(!video_codec_f) {
print_codec_error(*video_codec);
print_codec_error(args_parser->video_codec);
_exit(54);
}
*low_power = video_codec_only_supports_low_power_mode(*supported_video_codecs, *video_codec);
*low_power = video_codec_only_supports_low_power_mode(*supported_video_codecs, args_parser->video_codec);
return video_codec_f;
}
@@ -2819,26 +2832,33 @@ static gsr_video_codec select_appropriate_video_codec_automatically(gsr_capture_
}
}
static const AVCodec* select_video_codec_with_fallback(gsr_capture_metadata capture_metadata, gsr_video_codec *video_codec, const char *file_extension, bool use_software_video_encoder, gsr_egl *egl, bool *low_power) {
static const AVCodec* select_video_codec_with_fallback(gsr_capture_metadata capture_metadata, args_parser *args_parser, const char *file_extension, gsr_egl *egl, bool *low_power) {
gsr_supported_video_codecs supported_video_codecs;
if(!get_supported_video_codecs(egl, *video_codec, use_software_video_encoder, true, &supported_video_codecs)) {
if(!get_supported_video_codecs_with_cpu_fallback(egl, args_parser, true, &supported_video_codecs)) {
fprintf(stderr, "gsr error: failed to query for supported video codecs\n");
print_codec_error(*video_codec);
print_codec_error(args_parser->video_codec);
_exit(11);
}
set_supported_video_codecs_ffmpeg(&supported_video_codecs, nullptr, egl->gpu_info.vendor);
const bool video_codec_auto = *video_codec == (gsr_video_codec)GSR_VIDEO_CODEC_AUTO;
if(args_parser->video_encoder == GSR_VIDEO_ENCODER_HW_CPU && args_parser->video_codec != (gsr_video_codec)GSR_VIDEO_CODEC_AUTO && args_parser->video_codec != GSR_VIDEO_CODEC_H264) {
fprintf(stderr, "gsr warning: cpu encoding is used but video codec isn't set to h264. Forcing video codec to h264\n");
args_parser->video_codec = GSR_VIDEO_CODEC_H264;
}
if(args_parser->video_encoder != GSR_VIDEO_ENCODER_HW_CPU)
set_supported_video_codecs_ffmpeg(&supported_video_codecs, nullptr, egl->gpu_info.vendor);
const bool video_codec_auto = args_parser->video_codec == (gsr_video_codec)GSR_VIDEO_CODEC_AUTO;
if(video_codec_auto) {
if(strcmp(file_extension, "webm") == 0) {
fprintf(stderr, "gsr info: using vp8 encoder because a codec was not specified and the file extension is .webm\n");
*video_codec = GSR_VIDEO_CODEC_VP8;
} else if(use_software_video_encoder) {
args_parser->video_codec = GSR_VIDEO_CODEC_VP8;
} else if(args_parser->video_encoder == GSR_VIDEO_ENCODER_HW_CPU) {
fprintf(stderr, "gsr info: using h264 encoder because a codec was not specified\n");
*video_codec = GSR_VIDEO_CODEC_H264;
args_parser->video_codec = GSR_VIDEO_CODEC_H264;
} else {
*video_codec = select_appropriate_video_codec_automatically(capture_metadata, &supported_video_codecs);
if(*video_codec == (gsr_video_codec)-1) {
args_parser->video_codec = select_appropriate_video_codec_automatically(capture_metadata, &supported_video_codecs);
if(args_parser->video_codec == (gsr_video_codec)-1) {
fprintf(stderr, "gsr error: no video encoder was specified and neither h264, hevc nor av1 are supported on your system or you are trying to capture at a resolution higher than your system supports for each codec\n");
_exit(52);
}
@@ -2848,8 +2868,8 @@ static const AVCodec* select_video_codec_with_fallback(gsr_capture_metadata capt
// TODO: Allow hevc, vp9 and av1 in (enhanced) flv (supported since ffmpeg 6.1)
const bool is_flv = strcmp(file_extension, "flv") == 0;
if(is_flv) {
if(*video_codec != GSR_VIDEO_CODEC_H264) {
*video_codec = GSR_VIDEO_CODEC_H264;
if(args_parser->video_codec != GSR_VIDEO_CODEC_H264) {
args_parser->video_codec = GSR_VIDEO_CODEC_H264;
fprintf(stderr, "gsr warning: hevc/av1 is not compatible with flv, falling back to h264 instead.\n");
}
@@ -2862,8 +2882,8 @@ static const AVCodec* select_video_codec_with_fallback(gsr_capture_metadata capt
const bool is_hls = strcmp(file_extension, "m3u8") == 0;
if(is_hls) {
if(video_codec_is_av1(*video_codec)) {
*video_codec = GSR_VIDEO_CODEC_HEVC;
if(video_codec_is_av1(args_parser->video_codec)) {
args_parser->video_codec = GSR_VIDEO_CODEC_HEVC;
fprintf(stderr, "gsr warning: av1 is not compatible with hls (m3u8), falling back to hevc instead.\n");
}
@@ -2874,18 +2894,12 @@ static const AVCodec* select_video_codec_with_fallback(gsr_capture_metadata capt
// }
}
if(use_software_video_encoder && *video_codec != GSR_VIDEO_CODEC_H264) {
fprintf(stderr, "gsr error: \"-encoder cpu\" option is currently only available when using h264 codec option (-k)\n");
args_parser_print_usage();
_exit(1);
}
const AVCodec *codec = pick_video_codec(egl, args_parser, is_flv, low_power, &supported_video_codecs);
const AVCodec *codec = pick_video_codec(video_codec, egl, use_software_video_encoder, video_codec_auto, is_flv, low_power, &supported_video_codecs);
const vec2i codec_max_resolution = codec_get_max_resolution(*video_codec, use_software_video_encoder, &supported_video_codecs);
const vec2i codec_max_resolution = codec_get_max_resolution(args_parser->video_codec, args_parser->video_encoder == GSR_VIDEO_ENCODER_HW_CPU, &supported_video_codecs);
const vec2i capture_size = {capture_metadata.width, capture_metadata.height};
if(!codec_supports_resolution(codec_max_resolution, capture_size)) {
const char *video_codec_name = video_codec_to_string(*video_codec);
const char *video_codec_name = video_codec_to_string(args_parser->video_codec);
fprintf(stderr, "gsr error: The max resolution for video codec %s is %dx%d while you are trying to capture at resolution %dx%d. Change capture resolution or video codec and try again\n",
video_codec_name, codec_max_resolution.x, codec_max_resolution.y, capture_size.x, capture_size.y);
_exit(53);
@@ -3292,7 +3306,7 @@ int main(int argc, char **argv) {
std::vector<AudioTrack> audio_tracks;
bool low_power = false;
const AVCodec *video_codec_f = select_video_codec_with_fallback(capture_metadata, &arg_parser.video_codec, file_extension.c_str(), arg_parser.video_encoder == GSR_VIDEO_ENCODER_HW_CPU, &egl, &low_power);
const AVCodec *video_codec_f = select_video_codec_with_fallback(capture_metadata, &arg_parser, file_extension.c_str(), &egl, &low_power);
const enum AVPixelFormat video_pix_fmt = get_pixel_format(arg_parser.video_codec, egl.gpu_info.vendor, arg_parser.video_encoder == GSR_VIDEO_ENCODER_HW_CPU);
AVCodecContext *video_codec_context = create_video_codec_context(video_pix_fmt, video_codec_f, egl, arg_parser, capture_metadata.width, capture_metadata.height);