OPTION_FAKE_CARDS_AUDIO,
OPTION_HTTP_UNCOMPRESSED_VIDEO,
OPTION_HTTP_X264_VIDEO,
+ OPTION_RECORD_X264_VIDEO,
OPTION_X264_PRESET,
OPTION_X264_TUNE,
OPTION_X264_SPEEDCONTROL,
OPTION_X264_BITRATE,
OPTION_X264_VBV_BUFSIZE,
OPTION_X264_VBV_MAX_BITRATE,
+ OPTION_X264_10_BIT,
OPTION_X264_PARAM,
OPTION_HTTP_MUX,
OPTION_HTTP_COARSE_TIMEBASE,
OPTION_ENABLE_MAKEUP_GAIN_AUTO,
OPTION_DISABLE_ALSA_OUTPUT,
OPTION_NO_FLUSH_PBOS,
- OPTION_PRINT_VIDEO_LATENCY
+ OPTION_PRINT_VIDEO_LATENCY,
+ OPTION_MAX_INPUT_QUEUE_FRAMES,
+ OPTION_AUDIO_QUEUE_LENGTH_MS,
+ OPTION_OUTPUT_YCBCR_COEFFICIENTS,
+ OPTION_OUTPUT_BUFFER_FRAMES,
+ OPTION_OUTPUT_SLOP_FRAMES,
+ OPTION_TIMECODE_STREAM,
+ OPTION_TIMECODE_STDOUT,
+ OPTION_10_BIT_INPUT,
};
void usage()
fprintf(stderr, " -w, --width output width in pixels (default 1280)\n");
fprintf(stderr, " -h, --height output height in pixels (default 720)\n");
fprintf(stderr, " -c, --num-cards set number of input cards (default 2)\n");
+ fprintf(stderr, " -o, --output-card=CARD also output signal to the given card (default none)\n");
fprintf(stderr, " -t, --theme=FILE choose theme (default theme.lua)\n");
fprintf(stderr, " -I, --theme-dir=DIR search for theme in this directory (can be given multiple times)\n");
fprintf(stderr, " -v, --va-display=SPEC VA-API device for H.264 encoding\n");
fprintf(stderr, " --fake-cards-audio make fake (disconnected) cards output a simple tone\n");
fprintf(stderr, " --http-uncompressed-video send uncompressed NV12 video to HTTP clients\n");
fprintf(stderr, " --http-x264-video send x264-compressed video to HTTP clients\n");
+ fprintf(stderr, " --record-x264-video store x264-compressed video to disk (implies --http-x264-video,\n");
+ fprintf(stderr, " removes the need for working VA-API encoding)\n");
fprintf(stderr, " --x264-preset x264 quality preset (default " X264_DEFAULT_PRESET ")\n");
fprintf(stderr, " --x264-tune x264 tuning (default " X264_DEFAULT_TUNE ", can be blank)\n");
fprintf(stderr, " --x264-speedcontrol try to match x264 preset to available CPU speed\n");
fprintf(stderr, " default: same as --x264-bitrate, that is, one-second VBV)\n");
fprintf(stderr, " --x264-vbv-max-bitrate x264 local max bitrate (in kilobit/sec per --vbv-bufsize,\n");
fprintf(stderr, " 0 = no limit, default: same as --x264-bitrate, i.e., CBR)\n");
+ fprintf(stderr, " --x264-10-bit enable 10-bit x264 encoding\n");
fprintf(stderr, " --x264-param=NAME[,VALUE] set any x264 parameter, for fine tuning\n");
fprintf(stderr, " --http-mux=NAME mux to use for HTTP streams (default " DEFAULT_STREAM_MUX_NAME ")\n");
fprintf(stderr, " --http-audio-codec=NAME audio codec to use for HTTP streams\n");
fprintf(stderr, " (will give display corruption, but makes it\n");
fprintf(stderr, " possible to run with apitrace in real time)\n");
fprintf(stderr, " --print-video-latency print out measurements of video latency on stdout\n");
+ fprintf(stderr, " --max-input-queue-frames=FRAMES never keep more than FRAMES frames for each card\n");
+ fprintf(stderr, " (default 6, minimum 1)\n");
+ fprintf(stderr, " --audio-queue-length-ms=MS length of audio resampling queue (default 100.0)\n");
+ fprintf(stderr, " --output-ycbcr-coefficients={rec601,rec709,auto}\n");
+ fprintf(stderr, " Y'CbCr coefficient standard of output (default auto)\n");
+ fprintf(stderr, " auto is rec601, unless --output-card is used\n");
+ fprintf(stderr, " and a Rec. 709 mode (typically HD modes) is in use\n");
+ fprintf(stderr, " --output-buffer-frames=NUM number of frames in output buffer for --output-card,\n");
+ fprintf(stderr, " can be fractional (default 6.0); note also\n");
+ fprintf(stderr, " the audio queue can't be much longer than this\n");
+ fprintf(stderr, " --output-slop-frames=NUM if more less than this number of frames behind for\n");
+ fprintf(stderr, " --output-card, try to submit anyway instead of\n");
+ fprintf(stderr, " dropping the frame (default 0.5)\n");
+ fprintf(stderr, " --timecode-stream show timestamp and timecode in stream\n");
+ fprintf(stderr, " --timecode-stdout show timestamp and timecode on standard output\n");
+ fprintf(stderr, " --10-bit-input use 10-bit video input (requires compute shaders)\n");
}
void parse_flags(int argc, char * const argv[])
{ "width", required_argument, 0, 'w' },
{ "height", required_argument, 0, 'h' },
{ "num-cards", required_argument, 0, 'c' },
+ { "output-card", required_argument, 0, 'o' },
{ "theme", required_argument, 0, 't' },
{ "theme-dir", required_argument, 0, 'I' },
{ "map-signal", required_argument, 0, 'm' },
{ "fake-cards-audio", no_argument, 0, OPTION_FAKE_CARDS_AUDIO },
{ "http-uncompressed-video", no_argument, 0, OPTION_HTTP_UNCOMPRESSED_VIDEO },
{ "http-x264-video", no_argument, 0, OPTION_HTTP_X264_VIDEO },
+ { "record-x264-video", no_argument, 0, OPTION_RECORD_X264_VIDEO },
{ "x264-preset", required_argument, 0, OPTION_X264_PRESET },
{ "x264-tune", required_argument, 0, OPTION_X264_TUNE },
{ "x264-speedcontrol", no_argument, 0, OPTION_X264_SPEEDCONTROL },
{ "x264-bitrate", required_argument, 0, OPTION_X264_BITRATE },
{ "x264-vbv-bufsize", required_argument, 0, OPTION_X264_VBV_BUFSIZE },
{ "x264-vbv-max-bitrate", required_argument, 0, OPTION_X264_VBV_MAX_BITRATE },
+ { "x264-10-bit", no_argument, 0, OPTION_X264_10_BIT },
{ "x264-param", required_argument, 0, OPTION_X264_PARAM },
{ "http-mux", required_argument, 0, OPTION_HTTP_MUX },
{ "http-coarse-timebase", no_argument, 0, OPTION_HTTP_COARSE_TIMEBASE },
{ "disable-alsa-output", no_argument, 0, OPTION_DISABLE_ALSA_OUTPUT },
{ "no-flush-pbos", no_argument, 0, OPTION_NO_FLUSH_PBOS },
{ "print-video-latency", no_argument, 0, OPTION_PRINT_VIDEO_LATENCY },
+ { "max-input-queue-frames", required_argument, 0, OPTION_MAX_INPUT_QUEUE_FRAMES },
+ { "audio-queue-length-ms", required_argument, 0, OPTION_AUDIO_QUEUE_LENGTH_MS },
+ { "output-ycbcr-coefficients", required_argument, 0, OPTION_OUTPUT_YCBCR_COEFFICIENTS },
+ { "output-buffer-frames", required_argument, 0, OPTION_OUTPUT_BUFFER_FRAMES },
+ { "output-slop-frames", required_argument, 0, OPTION_OUTPUT_SLOP_FRAMES },
+ { "timecode-stream", no_argument, 0, OPTION_TIMECODE_STREAM },
+ { "timecode-stdout", no_argument, 0, OPTION_TIMECODE_STDOUT },
+ { "10-bit-input", no_argument, 0, OPTION_10_BIT_INPUT },
{ 0, 0, 0, 0 }
};
vector<string> theme_dirs;
+ string output_ycbcr_coefficients = "auto";
for ( ;; ) {
int option_index = 0;
int c = getopt_long(argc, argv, "c:t:I:v:m:M:w:h:", long_options, &option_index);
case 'c':
global_flags.num_cards = atoi(optarg);
break;
+ case 'o':
+ global_flags.output_card = atoi(optarg);
+ break;
case 't':
global_flags.theme_filename = optarg;
break;
case OPTION_HTTP_X264_VIDEO:
global_flags.x264_video_to_http = true;
break;
+ case OPTION_RECORD_X264_VIDEO:
+ global_flags.x264_video_to_disk = true;
+ global_flags.x264_video_to_http = true;
+ break;
case OPTION_X264_PRESET:
global_flags.x264_preset = optarg;
break;
case OPTION_X264_VBV_BUFSIZE:
global_flags.x264_vbv_buffer_size = atoi(optarg);
break;
+ case OPTION_X264_10_BIT:
+ global_flags.x264_bit_depth = 10;
+ break;
case OPTION_X264_VBV_MAX_BITRATE:
global_flags.x264_vbv_max_bitrate = atoi(optarg);
break;
case OPTION_PRINT_VIDEO_LATENCY:
global_flags.print_video_latency = true;
break;
+ case OPTION_MAX_INPUT_QUEUE_FRAMES:
+ global_flags.max_input_queue_frames = atoi(optarg);
+ break;
+ case OPTION_AUDIO_QUEUE_LENGTH_MS:
+ global_flags.audio_queue_length_ms = atof(optarg);
+ break;
+ case OPTION_OUTPUT_YCBCR_COEFFICIENTS:
+ output_ycbcr_coefficients = optarg;
+ break;
+ case OPTION_OUTPUT_BUFFER_FRAMES:
+ global_flags.output_buffer_frames = atof(optarg);
+ break;
+ case OPTION_OUTPUT_SLOP_FRAMES:
+ global_flags.output_slop_frames = atof(optarg);
+ break;
+ case OPTION_TIMECODE_STREAM:
+ global_flags.display_timecode_in_stream = true;
+ break;
+ case OPTION_TIMECODE_STDOUT:
+ global_flags.display_timecode_on_stdout = true;
+ break;
+ case OPTION_10_BIT_INPUT:
+ global_flags.ten_bit_input = true;
+ break;
case OPTION_HELP:
usage();
exit(0);
fprintf(stderr, "ERROR: --num-cards must be at least 1\n");
exit(1);
}
+ if (global_flags.output_card < -1 ||
+ global_flags.output_card >= global_flags.num_cards) {
+ fprintf(stderr, "ERROR: --output-card points to a nonexistant card\n");
+ exit(1);
+ }
if (global_flags.x264_speedcontrol) {
if (!global_flags.x264_preset.empty() && global_flags.x264_preset != "faster") {
fprintf(stderr, "WARNING: --x264-preset is overridden by --x264-speedcontrol (implicitly uses \"faster\" as base preset)\n");
exit(1);
}
}
+
+ // Rec. 709 would be the sane thing to do, but it seems many players
+ // just default to BT.601 coefficients no matter what. We _do_ set
+ // the right flags, so that a player that works properly doesn't have
+ // to guess, but it's frequently ignored. See discussions
+ // in e.g. https://trac.ffmpeg.org/ticket/4978; the situation with
+ // browsers is complicated and depends on things like hardware acceleration
+ // (https://bugs.chromium.org/p/chromium/issues/detail?id=333619 for
+ // extensive discussion). VLC generally fixed this as part of 3.0.0
+ // (see e.g. https://github.com/videolan/vlc/commit/bc71288b2e38c07d6921472824b92eef1aa85f7e
+ // and https://github.com/videolan/vlc/commit/c3fc2683a9cde1d42674ebf9935dced05733a215),
+ // but earlier versions were pretty random.
+ //
+ // On the other hand, HDMI/SDI output typically requires Rec. 709 for
+ // HD resolutions (with no way of signaling anything else), which is
+ // a conflicting demand. In this case, we typically let the HDMI/SDI
+ // output win if it is active, but the user can override this.
+ if (output_ycbcr_coefficients == "auto") {
+ // Essentially: BT.709 if HDMI/SDI output is on, otherwise BT.601.
+ global_flags.ycbcr_rec709_coefficients = false;
+ global_flags.ycbcr_auto_coefficients = true;
+ } else if (output_ycbcr_coefficients == "rec709") {
+ global_flags.ycbcr_rec709_coefficients = true;
+ global_flags.ycbcr_auto_coefficients = false;
+ } else if (output_ycbcr_coefficients == "rec601") {
+ global_flags.ycbcr_rec709_coefficients = false;
+ global_flags.ycbcr_auto_coefficients = false;
+ } else {
+ fprintf(stderr, "ERROR: --output-ycbcr-coefficients must be “rec601”, “rec709” or “auto”\n");
+ exit(1);
+ }
+
+ if (global_flags.output_buffer_frames < 0.0f) {
+ // Actually, even zero probably won't make sense; there is some internal
+ // delay to the card.
+ fprintf(stderr, "ERROR: --output-buffer-frames can't be negative.\n");
+ exit(1);
+ }
+ if (global_flags.output_slop_frames < 0.0f) {
+ fprintf(stderr, "ERROR: --output-slop-frames can't be negative.\n");
+ exit(1);
+ }
+ if (global_flags.max_input_queue_frames < 1) {
+ fprintf(stderr, "ERROR: --max-input-queue-frames must be at least 1.\n");
+ exit(1);
+ }
+ if (global_flags.max_input_queue_frames > 10) {
+ fprintf(stderr, "WARNING: --max-input-queue-frames has little effect over 10.\n");
+ }
}
projects / nageru / blobdiff