How to use Filesink in Deepstream test application to save video - nvidia-deepstream

Question

Hello everyone my question is related with Nvidia Deepstream-5.0 SDK,
I am trying to run a sample test deepstream-nvdsanalytics-test which is in "/source/apps/sample_apps" in NVIDIA Deepstream container. I want to save the video file by using Filesink. I got the suggestion to look into create_encode_file_bin function which is in"/source/apps/apps-common/src/deepstream_sink_bin.c".
I tried changing the code deepstream_nvdsanalytics_test.cpp taking create_encode_file_bin as a reference but got some errors. I am posting my pipeline, edited code and error please have a look.
pipeline used-
pgie->nvtracker->nvdsanalytics->tiler->nvvidconv->nvosd->nvideoconvvert->caps
filter(x/raw)->encoder->codecparse->mux->filesink
Error-
(deepstream-nvdsanalytics-test:203): GStreamer-WARNING **:
16:08:13.115: Name ‘nvvideo-converter’ is not unique in bin
‘nvdsanalytics-test-pipeline’, not adding
(deepstream-nvdsanalytics-test:203): GStreamer-CRITICAL **:
16:08:13.116: gst_element_link_pads_full: assertion ‘GST_IS_ELEMENT
(dest)’ failed Elements could not be linked. Exiting.
code-
#include <gst/gst.h>
#include <glib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <sys/time.h>
#include <iostream>
#include <vector>
#include <unordered_map>
#include "gstnvdsmeta.h"
#include "nvds_analytics_meta.h"
#include "deepstream_config.h"
#ifndef PLATFORM_TEGRA
#include "gst-nvmessage.h"
#endif
[....]
int
main (int argc, char *argv[])
{
GMainLoop *loop = NULL;
GstElement *pipeline = NULL, *streammux = NULL, *sink = NULL, *pgie = NULL,
*nvtracker = NULL, *nvdsanalytics = NULL,
*nvvidconv = NULL, *nvosd = NULL, *nvvidconv1 = NULL, *transform1 = NULL, *cap_filter = NULL, *encoder = NULL, *codecparse = NULL, *mux = NULL, *tiler = NULL;
GstCaps *caps = NULL;
#ifdef PLATFORM_TEGRA
GstElement *transform = NULL;
#endif
GstBus *bus = NULL;
guint bus_watch_id;
GstPad *nvdsanalytics_src_pad = NULL;
guint i, num_sources;
guint tiler_rows, tiler_columns;
guint pgie_batch_size;
gulong bitrate = 2000000;
guint profile = 0;
/* Check input arguments */
if (argc < 2) {
g_printerr ("Usage: %s <uri1> [uri2] ... [uriN] \n", argv[0]);
return -1;
}
num_sources = argc - 1;
/* Standard GStreamer initialization */
gst_init (&argc, &argv);
loop = g_main_loop_new (NULL, FALSE);
/* Create gstreamer elements */
/* Create Pipeline element that will form a connection of other elements */
pipeline = gst_pipeline_new ("nvdsanalytics-test-pipeline");
/* Create nvstreammux instance to form batches from one or more sources. */
streammux = gst_element_factory_make ("nvstreammux", "stream-muxer");
if (!pipeline || !streammux) {
g_printerr ("One element could not be created. Exiting.\n");
return -1;
}
gst_bin_add (GST_BIN (pipeline), streammux);
for (i = 0; i < num_sources; i++) {
GstPad *sinkpad, *srcpad;
gchar pad_name[16] = { };
GstElement *source_bin = create_source_bin (i, argv[i + 1]);
if (!source_bin) {
g_printerr ("Failed to create source bin. Exiting.\n");
return -1;
}
gst_bin_add (GST_BIN (pipeline), source_bin);
g_snprintf (pad_name, 15, "sink_%u", i);
sinkpad = gst_element_get_request_pad (streammux, pad_name);
if (!sinkpad) {
g_printerr ("Streammux request sink pad failed. Exiting.\n");
return -1;
}
srcpad = gst_element_get_static_pad (source_bin, "src");
if (!srcpad) {
g_printerr ("Failed to get src pad of source bin. Exiting.\n");
return -1;
}
if (gst_pad_link (srcpad, sinkpad) != GST_PAD_LINK_OK) {
g_printerr ("Failed to link source bin to stream muxer. Exiting.\n");
return -1;
}
gst_object_unref (srcpad);
gst_object_unref (sinkpad);
}
/* Use nvinfer to infer on batched frame. */
pgie = gst_element_factory_make ("nvinfer", "primary-nvinference-engine");
/* Use nvtracker to track detections on batched frame. */
nvtracker = gst_element_factory_make ("nvtracker", "nvtracker");
/* Use nvdsanalytics to perform analytics on object */
nvdsanalytics = gst_element_factory_make ("nvdsanalytics", "nvdsanalytics");
/* Use nvtiler to composite the batched frames into a 2D tiled array based
* on the source of the frames. */
tiler = gst_element_factory_make ("nvmultistreamtiler", "nvtiler");
/* Use convertor to convert from NV12 to RGBA as required by nvosd */
nvvidconv = gst_element_factory_make ("nvvideoconvert", "nvvideo-converter");
if (!nvvidconv) {
g_printerr ("nvvdiconv element could not be created. Exiting.\n");
}
/* Create OSD to draw on the converted RGBA buffer */
nvosd = gst_element_factory_make ("nvdsosd", "nv-onscreendisplay");
if (!nvosd) {
g_printerr ("nvosd element could not be created. Exiting.\n");
}
/* converter to convert RGBA to NV12 */
nvvidconv1 = gst_element_factory_make ("nvvideoconvert", "nvvideo-converter1");
if (!nvvidconv1) {
g_printerr ("nvvidconv1 element could not be created. Exiting.\n");
}
/*create cap_filter */
cap_filter = gst_element_factory_make (NVDS_ELEM_CAPS_FILTER, "cap_filter");
if (!cap_filter) {
g_printerr ("cap_filter element could not be created. Exiting.\n");
}
/* create cap for filter */
caps = gst_caps_from_string ("video/x-raw, format=I420");
g_object_set (G_OBJECT (cap_filter), "caps", caps, NULL);
/* creatge encoder*/
encoder = gst_element_factory_make (NVDS_ELEM_ENC_H264_HW, "encoder");
if (!encoder) {
g_printerr ("encoder element could not be created. Exiting.\n");
}
/* create transform1 */
transform1 = gst_element_factory_make (NVDS_ELEM_VIDEO_CONV, "transform1");
g_object_set (G_OBJECT (transform1), "gpu-id", 0, NULL);
if (!transform1) {
g_printerr ("transform1 element could not be created. Exiting.\n");
}
#ifdef IS_TEGRA
g_object_set (G_OBJECT (encoder), "bufapi-version", 1, NULL);
#endif
g_object_set (G_OBJECT (encoder), "profile", profile, NULL);
g_object_set (G_OBJECT (encoder), "bitrate", bitrate, NULL);
/* create codecparse */
codecparse = gst_element_factory_make ("h264parse", "h264-parser");
if (!codecparse) {
g_printerr ("codecparse element could not be created. Exiting.\n");
}
/* create mux */
mux = gst_element_factory_make (NVDS_ELEM_MUX_MP4, "mux");
if (!mux) {
g_printerr ("mux element could not be created. Exiting.\n");
}
/* create sink */
sink = gst_element_factory_make (NVDS_ELEM_SINK_FILE, "filesink");
if (!sink) {
g_printerr ("sink element could not be created. Exiting.\n");
}
g_object_set (G_OBJECT (sink), "location", "capture.mp4", "sync", 0, "async" , FALSE, NULL);
// /* Finally render the osd output */
#ifdef PLATFORM_TEGRA
transform = gst_element_factory_make ("nvegltransform", "nvegl-transform");
#endif
// sink = gst_element_factory_make (NVDS_ELEM_SINK_FILE, "filesink");
// g_object_set (G_OBJECT (sink), "location", "capture.mp4", "sync", 0, "async" , FALSE, NULL);
if (!pgie || !nvtracker || !nvdsanalytics || !nvvidconv ||
!nvosd || !nvvidconv1 || !cap_filter || !encoder || !codecparse || !mux || !sink) {
g_printerr ("One element could not be created. Exiting.\n");
return -1;
}
#ifdef PLATFORM_TEGRA
if(!transform) {
g_printerr ("One tegra element could not be created. Exiting.\n");
return -1;
}
#endif
g_object_set (G_OBJECT (streammux), "width", MUXER_OUTPUT_WIDTH, "height",
MUXER_OUTPUT_HEIGHT, "batch-size", num_sources,
"batched-push-timeout", MUXER_BATCH_TIMEOUT_USEC, NULL);
/* Configure the nvinfer element using the nvinfer config file. */
g_object_set (G_OBJECT (pgie),
"config-file-path", "nvdsanalytics_pgie_config.txt", NULL);
/* Configure the nvtracker element for using the particular tracker algorithm. */
g_object_set (G_OBJECT (nvtracker),
"ll-lib-file", "/opt/nvidia/deepstream/deepstream-5.0/lib/libnvds_nvdcf.so",
"ll-config-file", "tracker_config.yml", "tracker-width", 640, "tracker-height", 480,
NULL);
/* Configure the nvdsanalytics element for using the particular analytics config file*/
g_object_set (G_OBJECT (nvdsanalytics),
"config-file", "config_nvdsanalytics.txt",
NULL);
/* Override the batch-size set in the config file with the number of sources. */
g_object_get (G_OBJECT (pgie), "batch-size", &pgie_batch_size, NULL);
if (pgie_batch_size != num_sources) {
g_printerr
("WARNING: Overriding infer-config batch-size (%d) with number of sources (%d)\n",
pgie_batch_size, num_sources);
g_object_set (G_OBJECT (pgie), "batch-size", num_sources, NULL);
}
tiler_rows = (guint) sqrt (num_sources);
tiler_columns = (guint) ceil (1.0 * num_sources / tiler_rows);
/* we set the tiler properties here */
g_object_set (G_OBJECT (tiler), "rows", tiler_rows, "columns", tiler_columns,
"width", TILED_OUTPUT_WIDTH, "height", TILED_OUTPUT_HEIGHT, NULL);
/* we add a message handler */
bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
bus_watch_id = gst_bus_add_watch (bus, bus_call, loop);
gst_object_unref (bus);
/* Set up the pipeline */
/* we add all elements into the pipeline */
#ifdef PLATFORM_TEGRA
gst_bin_add_many (GST_BIN (pipeline), pgie, nvtracker, nvdsanalytics ,
nvvidconv, nvosd, nvvidconv1, cap_filter, encoder, codecparse, mux, sink,
NULL);
/* we link the elements together
* nvstreammux -> nvinfer -> nvtracker -> nvdsanalytics -> nvtiler ->
* nvvideoconvert -> nvosd -> transform -> sink
*/
if (!gst_element_link_many (streammux, pgie, nvtracker, nvdsanalytics,
nvvidconv, nvosd, nvvidconv1, cap_filter, encoder, codecparse, mux, sink, NULL)) {
g_printerr ("Elements could not be linked. Exiting.\n");
return -1;
}
#else
gst_bin_add_many (GST_BIN (pipeline), pgie, nvtracker, nvdsanalytics,
nvvidconv, nvosd, nvvidconv1, cap_filter, encoder, codecparse, mux, sink, NULL);
/* we link the elements together
* nvstreammux -> nvinfer -> nvtracker -> nvdsanalytics -> nvtiler ->
* nvvideoconvert -> nvosd -> sink
*/
if (!gst_element_link_many (streammux, pgie, nvtracker, nvdsanalytics,
nvvidconv, nvosd, nvvidconv1, cap_filter, encoder, codecparse, mux, sink, NULL)) {
g_printerr ("Elements could not be linked. Exiting.\n");
return -1;
}
#endif
/* Lets add probe to get informed of the meta data generated, we add probe to
* the sink pad of the nvdsanalytics element, since by that time, the buffer
* would have had got all the metadata.
*/
nvdsanalytics_src_pad = gst_element_get_static_pad (nvdsanalytics, "src");
if (!nvdsanalytics_src_pad)
g_print ("Unable to get src pad\n");
else
gst_pad_add_probe (nvdsanalytics_src_pad, GST_PAD_PROBE_TYPE_BUFFER,
nvdsanalytics_src_pad_buffer_probe, NULL, NULL);
/* Set the pipeline to "playing" state */
g_print ("Now playing:");
for (i = 0; i < num_sources; i++) {
g_print (" %s,", argv[i + 1]);
}
g_print ("\n");
gst_element_set_state (pipeline, GST_STATE_PLAYING);
/* Wait till pipeline encounters an error or EOS */
g_print ("Running...\n");
g_main_loop_run (loop);
/* Out of the main loop, clean up nicely */
g_print ("Returned, stopping playback\n");
gst_element_set_state (pipeline, GST_STATE_NULL);
g_print ("Deleting pipeline\n");
gst_object_unref (GST_OBJECT (pipeline));
g_source_remove (bus_watch_id);
g_main_loop_unref (loop);
return 0;
}
Please let me know if any other information is required from my side. Thank you in advance.

Answer 1

Modify the pipeline as per the below git diff (note: the below diff is for deepstream-test2 app, it'll work deepstream-nvdsanalytics-test as well) source:
diff --git a/deepstream-test2/deepstream_test2_app.c b/deepstream-test2/deepstream_test2_app.c
index 2b1ff34..c31441e 100644
--- a/deepstream-test2/deepstream_test2_app.c
+++ b/deepstream-test2/deepstream_test2_app.c
## -318,6 +318,16 ## main (int argc, char *argv[])
GstBus *bus = NULL;
guint bus_watch_id = 0;
GstPad *osd_sink_pad = NULL;
+
+ /* Added to save output to file */
+ GstElement *nvvidconv1 = NULL,
+ *filter1 = NULL, *filter2 = NULL,
+ *filter3 = NULL,
+ *videoconvert = NULL,
+ *filter4 = NULL,
+ *x264enc = NULL,
+ *qtmux = NULL;
+ GstCaps *caps1 = NULL, *caps2 = NULL, *caps3 = NULL, *caps4 = NULL;
/* Check input arguments */
if (argc != 2) {
## -373,17 +383,35 ## main (int argc, char *argv[])
/* Create OSD to draw on the converted RGBA buffer */
nvosd = gst_element_factory_make ("nvdsosd", "nv-onscreendisplay");
+ /* Added to save output to file */
+ nvvidconv1 = gst_element_factory_make ("nvvideoconvert", "nvvideo-converter1");
+ videoconvert = gst_element_factory_make ("videoconvert", "converter");
+ x264enc = gst_element_factory_make ("x264enc", "h264 encoder");
+ qtmux = gst_element_factory_make ("qtmux", "muxer");
+
/* Finally render the osd output */
#ifdef PLATFORM_TEGRA
transform = gst_element_factory_make ("nvegltransform", "nvegl-transform");
#endif
- sink = gst_element_factory_make ("nveglglessink", "nvvideo-renderer");
+ sink = gst_element_factory_make ("filesink", "nvvideo-renderer");
+
+ /* caps filter for nvvidconv to convert NV12 to RGBA as nvosd expects input
+ * in RGBA format */
+ filter1 = gst_element_factory_make ("capsfilter", "filter1");
+ filter2 = gst_element_factory_make ("capsfilter", "filter2");
+ filter3 = gst_element_factory_make ("capsfilter", "filter3");
+ filter4 = gst_element_factory_make ("capsfilter", "filter4");
if (!source || !h264parser || !decoder || !pgie ||
!nvtracker || !sgie1 || !sgie2 || !sgie3 || !nvvidconv || !nvosd || !sink) {
g_printerr ("One element could not be created. Exiting.\n");
return -1;
}
+ /* Added to test saving output to file */
+ if (!nvvidconv1 || !x264enc || !qtmux || !filter3 || !filter4) {
+ g_printerr ("One element could not be created. Exiting.\n");
+ return -1;
+ }
#ifdef PLATFORM_TEGRA
if(!transform) {
## -395,6 +423,9 ## main (int argc, char *argv[])
/* Set the input filename to the source element */
g_object_set (G_OBJECT (source), "location", argv[1], NULL);
+ /* Added to save output to file */
+ g_object_set (G_OBJECT (sink), "location", "out.mp4", NULL);
+
g_object_set (G_OBJECT (streammux), "batch-size", 1, NULL);
g_object_set (G_OBJECT (streammux), "width", MUXER_OUTPUT_WIDTH, "height",
## -429,9 +460,24 ## main (int argc, char *argv[])
#else
gst_bin_add_many (GST_BIN (pipeline),
source, h264parser, decoder, streammux, pgie, nvtracker, sgie1, sgie2, sgie3,
- nvvidconv, nvosd, sink, NULL);
+ filter1, nvvidconv, filter2, nvosd, nvvidconv1, filter3, videoconvert, filter4,
+ x264enc, qtmux, sink, NULL);
#endif
+ /* Added to save output to file */
+ caps1 = gst_caps_from_string ("video/x-raw(memory:NVMM), format=NV12");
+ g_object_set (G_OBJECT (filter1), "caps", caps1, NULL);
+ gst_caps_unref (caps1);
+ caps2 = gst_caps_from_string ("video/x-raw(memory:NVMM), format=RGBA");
+ g_object_set (G_OBJECT (filter2), "caps", caps2, NULL);
+ gst_caps_unref (caps2);
+ caps3 = gst_caps_from_string ("video/x-raw, format=RGBA");
+ g_object_set (G_OBJECT (filter3), "caps", caps3, NULL);
+ gst_caps_unref (caps3);
+ caps4 = gst_caps_from_string ("video/x-raw, format=NV12");
+ g_object_set (G_OBJECT (filter4), "caps", caps4, NULL);
+ gst_caps_unref (caps4);
+
GstPad *sinkpad, *srcpad;
gchar pad_name_sink[16] = "sink_0";
gchar pad_name_src[16] = "src";
## -470,7 +516,8 ## main (int argc, char *argv[])
}
#else
if (!gst_element_link_many (streammux, pgie, nvtracker, sgie1,
- sgie2, sgie3, nvvidconv, nvosd, sink, NULL)) {
+ sgie2, sgie3, filter1, nvvidconv, filter2, nvosd, nvvidconv1, filter3,
+ videoconvert, filter4, x264enc, qtmux, sink, NULL)) {
g_printerr ("Elements could not be linked. Exiting.\n");
return -1;
}
For deepstream-nvdsanalytics-test, pipeline would be:
gst_bin_add_many (GST_BIN (pipeline), pgie, nvtracker, nvdsanalytics, tiler,
filter1, nvvidconv, filter2, nvosd, nvvidconv1, filter3, videoconvert, filter4,
x264enc, qtmux, sink, NULL);