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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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3
TODO
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@@ -30,9 +30,6 @@ Window capture doesn't work properly in _control_ game after going from pause me
Monitor capture on steam deck is slightly below the game fps, but only when capturing on the steam deck screen. If capturing on another monitor, there is no issue.
Is this related to the dma buf rotation issue? different modifier being slow? does this always happen?
Fallback to vaapi copy in kms if opengl version fails. This can happen on steam deck for some reason (driver bug?). Also vaapi copy uses less gpu since it uses video codec unit to copy.
Test if vaapi copy version uses less memory than opengl version.
Intel is a bit weird with monitor capture and multiple monitors. If one of the monitors is rotated then all the kms will be rotated as well.
Is that only the case when the primary monitor is rotated? Also the primary monitor becomes position 0, 0 so crtc (x11 randr) position doesn't match the drm pos. Maybe get monitor position and size from drm instead.
How about if multiple monitors are rotated?

3
include/args_parser.h
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@@ -8,7 +8,7 @@
typedef struct gsr_egl gsr_egl;
#define NUM_ARGS 31
#define NUM_ARGS 32
typedef enum {
ARG_TYPE_STRING,
@@ -76,6 +76,7 @@ typedef struct {
const char *recording_saved_script;
bool verbose;
bool gl_debug;
bool fallback_cpu_encoding;
bool record_cursor;
bool date_folders;
bool restore_portal_session;

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);

110
src/main.cpp
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@@ -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);
}
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 = *video_codec == (gsr_video_codec)GSR_VIDEO_CODEC_AUTO;
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);