testing and adding in c program to record video

README.md

@@ -2,5 +2,28 @@
 # record mux another example with cli
 
 ```sh
+# mux to file with fake audio + video
 gst-launch-1.0 -e videotestsrc ! x264enc ! mp4mux name=mux ! filesink location="bla.mp4"  audiotestsrc ! lamemp3enc ! mux.
+# diff mux than above
+gst-launch-1.0 -vv videotestsrc ! videoconvert ! x264enc ! avimux name=mux ! filesink location="avimux_test.mp4"  audiotestsrc ! voaacenc ! mux.^C
+
+# above but with actual audio src
+gst-launch-1.0 videotestsrc ! x264enc ! mp4mux name=mux ! filesink location="bla.mp4"  pulsesrc ! lamemp3enc ! mux.
+
+# and.... yep now with actual video src
+# audio a little low?
+gst-launch-1.0 -e v4l2src device="/dev/video0" ! videoconvert ! queue ! x264enc tune=zerolatency ! mux. pulsesrc ! queue ! audioconvert ! audioresample ! voaacenc ! aacparse ! qtmux name=mux ! filesink location=test_gstreamer_record.mp4 sync=false
+
+# same thing but works fine after restart. make sure alsa settings not screwed up tho?
+gst-launch-1.0 -e v4l2src device="/dev/video0" ! videoconvert ! queue ! x264enc tune=zerolatency ! mux. alsasrc ! queue ! audioconvert ! audioresample ! voaacenc ! aacparse ! qtmux name=mux ! filesink location=test.mp4 sync=false
+```
+
+# ffmpeg
+```sh
+# video record
+ffmpeg -f v4l2 -framerate 25 -video_size 640_480 -i dev/video0 output.mkv
+
+# video + audio record to file
+./ffmpeg -f alsa -i hw:0 -f video4linux2 -i /dev/video0
+
 ```

test-record/Makefile

@@ -0,0 +1,9 @@
+
+run: clean build
+	./main
+
+build:
+	gcc -o main main.c `pkg-config --cflags --libs gstreamer-1.0 glib-2.0`
+
+clean:
+	rm -f myprog

test-record/main.c

@@ -0,0 +1,109 @@
+#include <gst/gst.h>
+#include <string.h>
+#include <signal.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+// gst-launch-1.0 v4l2src ! x264enc ! mp4mux ! filesink location=/home/rish/Desktop/okay.264 -e
+static GMainLoop *loop;
+static GstElement *pipeline, *src, *convert, *encoder, *muxer, *sink;
+static GstBus *bus;
+
+static gboolean
+message_cb (GstBus * bus, GstMessage * message, gpointer user_data)
+{
+  switch (GST_MESSAGE_TYPE (message)) {
+    case GST_MESSAGE_ERROR:{
+      GError *err = NULL;
+      gchar *name, *debug = NULL;
+
+      name = gst_object_get_path_string (message->src);
+      gst_message_parse_error (message, &err, &debug);
+
+      g_printerr ("ERROR: from element %s: %s\n", name, err->message);
+      if (debug != NULL)
+        g_printerr ("Additional debug info:\n%s\n", debug);
+
+      g_error_free (err);
+      g_free (debug);
+      g_free (name);
+
+      g_main_loop_quit (loop);
+      break;
+    }
+    case GST_MESSAGE_WARNING:{
+		GError *err = NULL;
+		gchar *name, *debug = NULL;
+
+		name = gst_object_get_path_string (message->src);
+		gst_message_parse_warning (message, &err, &debug);
+
+		g_printerr ("ERROR: from element %s: %s\n", name, err->message);
+		if (debug != NULL)
+		g_printerr ("Additional debug info:\n%s\n", debug);
+
+		g_error_free (err);
+		g_free (debug);
+		g_free (name);
+		break;
+    }
+    case GST_MESSAGE_EOS:{
+		g_print ("Got EOS\n");
+		g_main_loop_quit (loop);
+		gst_element_set_state (pipeline, GST_STATE_NULL);
+		g_main_loop_unref (loop);
+		gst_object_unref (pipeline);
+		exit(0);
+		break;
+	}
+    default:
+		break;
+  }
+
+  return TRUE;
+}
+
+int sigintHandler(int unused) {
+	g_print("You ctrl-c-ed! Sending EoS");
+	gst_element_send_event(pipeline, gst_event_new_eos());
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	signal(SIGINT, sigintHandler);
+	gst_init (&argc, &argv);
+
+	pipeline = gst_pipeline_new(NULL);
+	src = gst_element_factory_make("v4l2src", NULL);
+  convert = gst_element_factory_make("videoconvert", NULL);
+	encoder = gst_element_factory_make("x264enc", NULL);
+	muxer = gst_element_factory_make("mp4mux", NULL);
+	sink = gst_element_factory_make("filesink", NULL);
+
+	if (!pipeline || !src || !convert || !encoder || !muxer || !sink) {
+		g_error("Failed to create elements");
+		return -1;
+	}
+
+	g_object_set(sink, "location", "/home/talksik/code/gstreamer-tests/test-record/out.mp4", NULL);
+	gst_bin_add_many(GST_BIN(pipeline), src, convert, encoder, muxer, sink, NULL);
+	if (!gst_element_link_many(src, convert, encoder, muxer, sink, NULL)){
+		g_error("Failed to link elements");
+		return -2;
+	}
+
+	loop = g_main_loop_new(NULL, FALSE);
+
+	bus = gst_pipeline_get_bus(GST_PIPELINE (pipeline));
+	gst_bus_add_signal_watch(bus);
+	g_signal_connect(G_OBJECT(bus), "message", G_CALLBACK(message_cb), NULL);
+	gst_object_unref(GST_OBJECT(bus));
+
+	gst_element_set_state(pipeline, GST_STATE_PLAYING);
+
+	g_print("Starting loop");
+	g_main_loop_run(loop);
+
+	return 0;
+}