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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
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of this license document, but changing it is not allowed.
Preamble
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Also add information on how to contact you by electronic and paper mail.
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The hypothetical commands `show w' and `show c' should show the appropriate
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The GNU General Public License does not permit incorporating your program
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CFLAGS=`pkg-config gstreamer-1.0 gstreamer-app-1.0 srt --cflags` -O2 -Wall
LDFLAGS=`pkg-config gstreamer-1.0 gstreamer-app-1.0 srt --libs`
belacoder: belacoder.c
$(CC) $(CFLAGS) $< -o $@ $(LDFLAGS)
clean:
rm -f belacoder
README.md
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belacoder - live video encoder with dynamic bitrate control and [SRT](https://github.com/Haivision/srt) support
=========
This is a [gstreamer](https://gstreamer.freedesktop.org/)-based encoder with support for [SRT](https://github.com/Haivision/srt) and dynamic bitrate control depending on the network capacity. This means that if needed, the video bitrate is automatically reduced on-the-fly to match the speed of the network connection. The intended application is live video streaming over bonded 4G modems by using it on a single board computer together with a HDMI capture card and [strla](https://github.com/BELABOX/srtla).
belacoder is developed on an NVIDIA Jetson Nano ([Amazon.com](https://amzn.to/3mt2Coz) / [Amazon.co.uk](https://amzn.to/31IOgJ2) / [NVIDIA](https://developer.nvidia.com/embedded/jetson-nano-developer-kit)), and we provide gstreamer pipelines for using its hardware video encoding. However it can also be used on other platforms as long as the correct gstreamer pipeline is provided.
Building
--------
Installing the dependencies on L4T / Ubuntu:
sudo apt-get install build-essential git libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev # let me know if I forgot anything
sudo apt-get install libsrt-dev # only available in Ubuntu 20.04
# alternatively, manually installing SRT on older Ubuntu releases
git clone https://github.com/BELABOX/srt.git
cd srt
./configure --prefix=/usr/local
make -j 4
sudo make install
sudo ldconfig
Building belacoder:
git clone https://github.com/BELABOX/belacoder.git
cd belacoder
make
Usage
-----
./belacoder PIPELINE_FILE IP PORT DELAY(ms) [MAX_BITRATE(bps)]
Where:
* `PIPELINE_FILE` is a text file containing the gstreamer pipeline to use. See the `pipeline` directory for ready-made pipelines.
* `IP` is the IP address of the SRT listener to stream to (only applicable when the gstreamer sink is `appsink name=appsink`)
* `PORT` is the port of the SRT listener to stream to (only applicable when the gstreamer sink is `appsink name=appsink`)
* `DELAY` is the delay in milliseconds to add to the audio stream relative to the video (when using the gstreamer pipelines supplied with belacoder)
* `MAX_BITRATE` is an optional argument for setting the maximum **video** bitrate (when using the gstreamer pipelines supplied with belacoder)
Gstreamer pipelines
-------------------
Please check the supplied pipelines for examples. Here are a few unorganised tips & pointers:
* belacoder will work with arbitrary gstreamer pipelines as long as they're valid, however for dynamic bitrate control the video encoder **must** have `name=video_enc` and it must have a `bitrate` property changeable in the running state; the sink **must** be `appsink name=appsink`, which will stream to the SRT IP and port specified as command line arguments
* If a `textoverlay` element with `name=overlay` is specificed, then it will be dynamically updated to show the current bitrate
* An `identity name=delay signal-handoffs=TRUE` element can be used to adjust the PTS (presentation timestamp) of a stream by `DELAY` milliseconds. Use it to synchronise the audio and video if needed (e.g. DELAY of around 900 for a Gopro Hero7 with stabilisation enabled)
* The Jetson Nano hardware encoders seem biased towards allocating most of the bitrate budget to I-frames, while heavily compressing P-frames, especially on lower bitrates. This can heavily affect image quality when most of the image is moving and this is why we limit the quantization range in our pipelines using `qp-range`. This range makes a big improvement over the defaults, however in some cases results can probably be further improved with different parameters.
belacoder
Executable
BIN
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belacoder.c
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/*
belacoder - live video encoder with dynamic bitrate control
Copyright (C) 2020 BELABOX project
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <assert.h>
#include <sys/mman.h>
#include <gst/gst.h>
#include <gst/gstinfo.h>
#include <gst/app/gstappsink.h>
#include <glib-unix.h>
#include <srt.h>
#define SRT_MAX_OHEAD 20 // maximum SRT transmission overhead (when using appsink)
#define MIN_BITRATE (500 * 1000)
#define DEF_BITRATE (6 * 1000 * 1000)
#define BITRATE_UPDATE_INT 20 // buffer size sampling interval (ms)
#define BS_INCR_MIN 12 // maximum buffer size to increase the bitrate when the current bitrate is low
#define BS4M_INCR 40 // maximum buffer size at 4Mbps to increase the bitrate
#define BS_DECR 150 // min buffer size to reduce the bitrate
#define BS_DECR_FAST 500 // min buffer size to reduce the bitrate even when the buffer size is already decreasing
#define BITRATE_INCR_STEP (100*1000) // the bitrate increment step (bps)
#define BITRATE_INCR_INT 750 // the minimum interval for increasing the bitrate (ms)
#define BITRATE_DECR_SCALE 10 // the bitrate is decreased by cur_bitrate/BITRATE_DECR_SCALE
#define BITRATE_DECR_MIN (100*1000) // the minimum value to decrease the bitrate by (bps)
#define BITRATE_DECR_INT 500 // the minimum interval for decreasing the bitrate (ms)
#define MAX_SOUND_DELAY 10000
#define min(a, b) ((a < b) ? a : b)
#define max(a, b) ((a > b) ? a : b)
#define min_max(a, l, h) (max(min((a), (h)), (l)))
//#define DEBUG 1
#ifdef DEBUG
#define debug(...) fprintf (stderr, __VA_ARGS__)
#else
#define debug(...)
#endif
static GstPipeline *gst_pipeline = NULL;
GstElement *encoder, *overlay;
SRTSOCKET sock;
struct sockaddr_in dest;
int sound_delay = 0;
int max_bitrate;
int cur_bitrate = MIN_BITRATE;
uint64_t getms() {
struct timespec time = {0, 0};
assert(clock_gettime(CLOCK_MONOTONIC_RAW, &time) == 0);
return time.tv_sec * 1000 + time.tv_nsec / 1000 / 1000;
}
void update_overlay(int bitrate) {
if (GST_IS_ELEMENT(overlay)) {
char overlay_text[100];
snprintf(overlay_text, 100, "bitrate: %d", bitrate/1000);
g_object_set (G_OBJECT(overlay), "text", overlay_text, NULL);
}
}
void update_bitrate() {
static double avg_bs = 0;
static double prev_bs = 0;
static int max_bs = 0;
static uint64_t next_bitrate_check = 0;
static uint64_t next_bitrate_adj = 0;
uint64_t ctime = getms();
if (ctime < next_bitrate_check) {
return;
}
next_bitrate_check = ctime + BITRATE_UPDATE_INT;
int bs = -1;
int sz = sizeof(bs);
int ret = srt_getsockflag(sock, SRTO_SNDDATA, &bs, &sz);
if (ret < 0 || bs < 0) {
return;
}
if (bs > max_bs) {
max_bs = bs;
}
// Rolling average
avg_bs = avg_bs*0.90 + ((double)bs) * 0.10;
// Scale the maximum buffer size to increase the bitrate depending on the current bitrate
double scaled_incr_bs = max(BS_INCR_MIN, BS4M_INCR * (double)cur_bitrate/(4*1000*1000));
int bitrate = cur_bitrate;
debug("bs: %d max_bs: %d avg_bs: %f, scaled_target: %f, bitrate %d\n",
bs, max_bs, avg_bs, scaled_incr_bs, cur_bitrate);
if (max_bs < scaled_incr_bs && ctime > next_bitrate_adj) {
bitrate += BITRATE_INCR_STEP;
next_bitrate_adj = ctime + BITRATE_INCR_INT;
} else if (bs > BS_DECR && ctime > next_bitrate_adj && (avg_bs > prev_bs || bs > BS_DECR_FAST)) {
bitrate -= max(bitrate/BITRATE_DECR_SCALE, BITRATE_DECR_MIN);
next_bitrate_adj = ctime + BITRATE_DECR_INT;
/* reset the max bs so we stop decreasing the bitrate
as soon as the buffer size goes below the threshold */
max_bs = 0;
} else {
max_bs = max_bs * 95 / 100;
}
prev_bs = avg_bs;
bitrate = min_max(bitrate, MIN_BITRATE, max_bitrate);
if (bitrate != cur_bitrate) {
cur_bitrate = bitrate;
// round the bitrate we set to 100 kbps
bitrate = bitrate / (100 * 1000) * (100 * 1000);
g_object_set (G_OBJECT(encoder), "bitrate", bitrate, NULL);
update_overlay(bitrate);
debug("set bitrate to %d, internal value %d\n", bitrate, cur_bitrate);
}
}
#define SRT_PKT_SIZE 1316
GstFlowReturn new_buf_cb(GstAppSink *sink, gpointer user_data) {
static char pkt[SRT_PKT_SIZE];
static int pkt_len = 0;
GstSample *sample = gst_app_sink_pull_sample(sink);
if (!sample) exit(1);
// We can only update the bitrate when we have an appsink and a configurable video_enc
if (GST_IS_ELEMENT(encoder)) {
update_bitrate();
}
GstBuffer *buffer = NULL;
GstMapInfo map = {0};
buffer = gst_sample_get_buffer(sample);
gst_buffer_map(buffer, &map, GST_MAP_READ);
// We send SRT_PKT_SIZE size packets, splitting and merging samples if needed
int sample_sz = map.size;
do {
int copy_sz = min(SRT_PKT_SIZE - pkt_len, sample_sz);
memcpy((void *)pkt + pkt_len, map.data, copy_sz);
pkt_len += copy_sz;
if (pkt_len == SRT_PKT_SIZE) {
int nb = srt_send(sock, pkt, SRT_PKT_SIZE);
assert(nb == SRT_PKT_SIZE);
pkt_len = 0;
}
sample_sz -= copy_sz;
} while(sample_sz);
gst_buffer_unmap(buffer, &map);
gst_sample_unref (sample);
return GST_FLOW_OK;
}
int parse_ip(struct sockaddr_in *addr, char *ip_str) {
in_addr_t ip = inet_addr(ip_str);
if (ip == -1) return -1;
memset(addr, 0, sizeof(*addr));
addr->sin_family = AF_INET;
addr->sin_addr.s_addr = ip;
return 0;
}
int parse_ip_port(struct sockaddr_in *addr, char *ip_str, char *port_str) {
if (parse_ip(addr, ip_str) != 0) return -1;
int port = strtol(port_str, NULL, 10);
if (port <= 0 || port > 65535) return -2;
addr->sin_port = htons(port);
return 0;
}
void init_srt(char *ip, char *port) {
srt_startup();
int ret = parse_ip_port(&dest, ip, port);
assert(ret == 0);
sock = srt_create_socket();
// auto, based on input rate
int64_t max_bw = 0;
ret = srt_setsockflag(sock, SRTO_MAXBW, &max_bw, sizeof(max_bw));
assert(ret == 0);
// overhead(retransmissions)
int32_t ohead = SRT_MAX_OHEAD;
ret = srt_setsockflag(sock, SRTO_OHEADBW, &ohead, sizeof(ohead));
assert(ret == 0);
ret = srt_connect(sock, (struct sockaddr*)&dest, sizeof(dest));
assert(ret == 0);
}
void exit_syntax() {
fprintf(stderr, "Syntax: belacoder PIPELINE_FILE IP PORT DELAY(ms) [MAX_BITRATE(bps)]\n");
exit(EXIT_FAILURE);
}
static void cb_delay (GstElement *identity, GstBuffer *buffer, gpointer data) {
buffer = gst_buffer_make_writable(buffer);
GST_BUFFER_PTS (buffer) += GST_SECOND * sound_delay / 1000;
}
int main(int argc, char** argv) {
if (argc < 5 || argc > 6) {
exit_syntax();
}
// Read the pipeline file
int pipeline_fd = open(argv[1], O_RDONLY);
if (pipeline_fd < 0) {
fprintf(stderr, "Failed to open the pipeline file %s: ", argv[1]);
perror("");
exit(EXIT_FAILURE);
}
int len = lseek(pipeline_fd, 0, SEEK_END);
char *launch_string = mmap(0, len, PROT_READ, MAP_PRIVATE, pipeline_fd, 0);
fprintf(stderr, "Gstreamer pipeline: %s\n", launch_string);
gst_init (&argc, &argv);
GError *error = NULL;
gst_pipeline = (GstPipeline*) gst_parse_launch(launch_string, &error);
if (gst_pipeline == NULL) {
g_print( "Failed to parse launch: %s\n", error->message);
return -1;
}
if (error) g_error_free(error);
// Optional SRT streaming via an appsink (needed for dynamic video bitrate)
GstAppSinkCallbacks callbacks = {NULL, NULL, new_buf_cb};
GstElement *rtlasink = gst_bin_get_by_name(GST_BIN(gst_pipeline), "appsink");
if (GST_IS_ELEMENT(rtlasink)) {
gst_app_sink_set_callbacks (GST_APP_SINK(rtlasink), &callbacks, NULL, NULL);
init_srt(argv[2], argv[3]);
}
// Optional dynamic video bitrate
if (argc == 5) {
max_bitrate = DEF_BITRATE;
} else if (argc == 6) {
max_bitrate = strtol(argv[5], NULL, 10);
if (max_bitrate < MIN_BITRATE || max_bitrate > 30*1024*1024) {
fprintf(stderr, "Invalid bitrate %d\n", max_bitrate);
exit_syntax();
}
}
cur_bitrate = max_bitrate;
fprintf(stderr, "Max bitrate: %d\n", max_bitrate);
encoder = gst_bin_get_by_name(GST_BIN(gst_pipeline), "video_enc");
if (GST_IS_ELEMENT(encoder)) {
g_object_set (G_OBJECT(encoder), "bitrate", cur_bitrate, NULL);
} else {
fprintf(stderr, "Failed to get a video_enc element from the pipeline, "
"no dynamic bitrate control\n");
encoder = NULL;
}
// Optional bitrate overlay
overlay = gst_bin_get_by_name(GST_BIN(gst_pipeline), "overlay");
update_overlay(cur_bitrate);
// Optional sound delay via an identity element
sound_delay = strtol(argv[4], NULL, 10);
fprintf(stderr, "Sound delay: %d ms\n", sound_delay);
if (sound_delay < -MAX_SOUND_DELAY || sound_delay > MAX_SOUND_DELAY) {
fprintf(stderr, "Maximum sound delay +/- %d\n", MAX_SOUND_DELAY);
exit_syntax();
}
GstElement *identity_elem = gst_bin_get_by_name(GST_BIN(gst_pipeline), "delay");
if (GST_IS_ELEMENT(identity_elem)) {
g_object_set(G_OBJECT(identity_elem), "signal-handoffs", TRUE, NULL);
g_signal_connect(identity_elem, "handoff", G_CALLBACK(cb_delay), NULL);
} else {
fprintf(stderr, "Failed to get a delay element from the pipeline, not applying a delay\n");
}
// Everything good so far, start the gstreamer pipeline
gst_element_set_state((GstElement*)gst_pipeline, GST_STATE_PLAYING);
while(1) {
sleep(1);
}
return 0;
}
pipeline/jetson/h265_camlink
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v4l2src !
video/x-raw,format=YUY2 !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink
pipeline/jetson/h265_camlink_1080p
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v4l2src !
video/x-raw,format=YUY2 !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 ! video/x-raw(memory:NVMM),width=1920,height=1080 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink
pipeline/jetson/h265_camlink_1080p29.97
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v4l2src !
video/x-raw,format=YUY2 !
videorate ! video/x-raw,framerate=7013/234 !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 ! video/x-raw(memory:NVMM),width=1920,height=1080 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink
pipeline/jetson/h265_camlink_1080p30
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v4l2src !
video/x-raw,format=YUY2 !
videorate ! video/x-raw,framerate=30/1 !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 ! video/x-raw(memory:NVMM),width=1920,height=1080 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink
pipeline/jetson/h265_camlink_720p
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v4l2src !
video/x-raw,format=YUY2 !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 ! video/x-raw(memory:NVMM),width=1280,height=720 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink
pipeline/jetson/h265_camlink_720p29.97
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v4l2src !
video/x-raw,format=YUY2 !
videorate ! video/x-raw,framerate=7013/234 !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 ! video/x-raw(memory:NVMM),width=1280,height=720 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink
pipeline/jetson/h265_camlink_720p30
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v4l2src !
video/x-raw,format=YUY2 !
videorate ! video/x-raw,framerate=30/1 !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 ! video/x-raw(memory:NVMM),width=1280,height=720 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink
pipeline/jetson/h265_v4l_mjpeg
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v4l2src !
image/jpeg ! jpegparse ! jpegdec !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink
pipeline/jetson/h265_v4l_mjpeg_1080p
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v4l2src !
image/jpeg,width=1920,height=1080 ! jpegparse ! jpegdec !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink
pipeline/jetson/h265_v4l_mjpeg_1080p30
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v4l2src !
image/jpeg,width=1920,height=1080,framerate=30/1 ! jpegparse ! jpegdec !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink
pipeline/jetson/h265_v4l_mjpeg_1080p60
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v4l2src !
image/jpeg,width=1920,height=1080,framerate=60/1 ! jpegparse ! jpegdec !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink
pipeline/jetson/h265_v4l_mjpeg_720p
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v4l2src !
image/jpeg,width=1280,height=720 ! jpegparse ! jpegdec !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink
pipeline/jetson/h265_v4l_mjpeg_720p30
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v4l2src !
image/jpeg,width=1280,height=720,framerate=30/1 ! jpegparse ! jpegdec !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink
pipeline/jetson/h265_v4l_mjpeg_720p60
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v4l2src !
image/jpeg,width=1280,height=720,framerate=60/1 ! jpegparse ! jpegdec !
textoverlay text='' valignment=top halignment=right font-desc="Sans, 10" name=overlay !
nvvidconv interpolation-method=5 !
nvv4l2h265enc control-rate=1 qp-range="28,50:0,38:0,50" iframeinterval=60 preset-level=4 maxperf-enable=true EnableTwopassCBR=true insert-sps-pps=true name=video_enc !
h265parse config-interval=-1 ! queue ! mux.
alsasrc device=hw:2 ! identity name=delay signal-handoffs=TRUE ! volume volume=1.0 !
audioconvert ! avenc_aac bitrate=131072 ! aacparse ! queue ! mux.
mpegtsmux name=mux !
appsink name=appsink