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Re: streaming .h264 video file using appsrc via rtsp

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bhargavram

Re: streaming .h264 video file using appsrc via rtsp

Hi,

I am streaming (.h264)video using appsrc via rtsp (gstreamer -1.0). On
the client side with gstreamer-1.0 the video is streaming with lag and
with gstreamer-0.10 the video is streaming fine.

Pipeline using gstreamer-1.0:
"gst-launch-1.0 rtspsrc location=rtsp://127.0.0.1:8554/test !
rtpjitterbuffer ! rtph264depay ! h264parse ! decodebin ! autovideosink"

Pipeline using gstreamer-0.10:
" gst-launch rtspsrc location=rtsp://127.0.0.1:8554/test ! rtph264depay
! h264parse ! decodebin ! autovideosink
"
we need to stream the video without lag using gstreamer-1.0

Can anyone help with some guide to stream the video without lag

Thanks & Regards,
M.Bhargav

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WisdomPill

Re: streaming .h264 video file using appsrc via rtsp

Can you provide the source code of the server? I think I have the same issue.
Look over here
http://gstreamer-devel.966125.n4.nabble.com/RTSP-h264-sob-issue-td4686086.html

Regards, Anas

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bhargavram

Re: streaming .h264 video file using appsrc via rtsp

Hi,

Here is the source code of server

gstrtsp-server.c
<http://gstreamer-devel.966125.n4.nabble.com/file/t378196/gstrtsp-server.c>

#include <gst/gst.h>

#include <gst/rtsp-server/rtsp-server.h>
#include <stdio.h>
#include <string.h>
typedef struct
{
GstElement *element;
GstElement *appsrc;
guint sourceid ;
GstClockTime timestamp;
} MyContext;
#define BUFF_SIZE (800*304*3)

FILE *file=NULL;
gpointer ptr=NULL;
/* called when we need to give data to appsrc */
//static void
//need_data (GstElement * appsrc, guint unused, MyContext * ctx)
static gboolean read_data(MyContext *ctx)
{
GstBuffer *buffer;
GstFlowReturn gstret;

size_t ret = 0;
GstMapInfo map;
memset(ptr,0,BUFF_SIZE);
// printf(" . ");
buffer = gst_buffer_new_allocate (NULL, BUFF_SIZE, NULL);

gst_buffer_map (buffer, &map, GST_MAP_WRITE);
ret = fread(ptr, 1, BUFF_SIZE, file);
map.size = BUFF_SIZE;
memcpy(map.data,ptr,BUFF_SIZE);

if(ret > 0)
{
gstret = gst_app_src_push_buffer(ctx->appsrc, buffer);
if(gstret != GST_FLOW_OK){
printf("push buffer returned %d \n", gstret);
return FALSE;
}

// g_signal_emit_by_name (ctx->appsrc, "push-buffer", buffer, &gstret);
}
else
{

printf("\n failed to read from file\n");
return FALSE;
}

gst_buffer_unmap (buffer, &map);
return TRUE;
}

static void start_feed (GstElement * pipeline, guint size, MyContext *ctx)
{
if (ctx->sourceid == 0) {
printf ("\nstart feeding ");
ctx->sourceid = g_idle_add ((GSourceFunc) read_data, ctx);
}
}

static void stop_feed (GstElement * pipeline,MyContext *ctx)
{
if (ctx->sourceid != 0) {
printf ("\nstop feeding");
g_source_remove (ctx->sourceid);
ctx->sourceid = 0;
}
}

/* called when a new media pipeline is constructed. We can query the
* pipeline and configure our appsrc */
static void
media_configure (GstRTSPMediaFactory * factory, GstRTSPMedia * media,
gpointer user_data)
{

MyContext *ctx;

ctx = g_new0 (MyContext, 1);
/* get the element used for providing the streams of the media */
ctx->element = gst_rtsp_media_get_element (media);

/* get our appsrc, we named it 'mysrc' with the name property */
ctx->appsrc = gst_bin_get_by_name_recurse_up (GST_BIN (ctx->element),
"mysrc");

/* this instructs appsrc that we will be dealing with timed buffer */
// gst_util_set_object_arg (G_OBJECT (ctx->appsrc), "format", "time");
g_object_set (G_OBJECT (ctx->appsrc),"format",GST_FORMAT_TIME,NULL);
/* configure the caps of the video */
g_object_set (G_OBJECT (ctx->appsrc), "caps",
gst_caps_new_simple ("video/x-h264",
"format", G_TYPE_STRING, "I420",
"width", G_TYPE_INT, 800,
"height", G_TYPE_INT, 608,
"framerate", GST_TYPE_FRACTION, 30, 1, NULL), NULL);

/* make sure ther datais freed when the media is gone */
g_object_set_data_full (G_OBJECT (media), "my-extra-data", ctx,
(GDestroyNotify) g_free);

/* install the callback that will be called when a buffer is needed */
g_signal_connect (ctx->appsrc, "need-data", G_CALLBACK(start_feed), ctx);
g_signal_connect(ctx->appsrc, "enough-data", G_CALLBACK(stop_feed), ctx);
}

int
main (int argc, char *argv[])
{
GMainLoop *loop;
GstRTSPServer *server;
GstRTSPMountPoints *mounts;
GstRTSPMediaFactory *factory;

if(argc != 2){
printf("File name not specified\n");
return 1;
}

ptr = g_malloc(BUFF_SIZE);
g_assert(ptr);
file = fopen(argv[1], "r");

gst_init (&argc, &argv);

loop = g_main_loop_new (NULL, FALSE);

/* create a server instance */
server = gst_rtsp_server_new ();

/* get the mount points for this server, every server has a default object
* that be used to map uri mount points to media factories */
mounts = gst_rtsp_server_get_mount_points (server);

/* make a media factory for a test stream. The default media factory can
use
* gst-launch syntax to create pipelines.
* any launch line works as long as it contains elements named pay%d. Each
* element with pay%d names will be a stream */
factory = gst_rtsp_media_factory_new ();
gst_rtsp_media_factory_set_launch (factory,
"(appsrc is-live=TRUE name=mysrc do-timestamp=TRUE ! h264parse !
rtph264pay name=pay0 pt=96 config-interval=1 )");

/* notify when our media is ready, This is called whenever someone asks for
* the media and a new pipeline with our appsrc is created */
g_signal_connect (factory, "media-configure", (GCallback) media_configure,
NULL);

/* attach the test factory to the /test url */
gst_rtsp_mount_points_add_factory (mounts, "/test", factory);

/* don't need the ref to the mounts anymore */
g_object_unref (mounts);

/* attach the server to the default maincontext */
gst_rtsp_server_attach (server, NULL);

/* start serving */
g_print ("stream ready at rtsp://127.0.0.1:8554/test\n");
g_main_loop_run (loop);

return 0;
}

Regards,
Bhargav

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noscgag

Re: streaming .h264 video file using appsrc via rtsp

In reply to this post by bhargavram

Try adding the "latency=0" argument to the rtspsrc element, and "sync=false"
to the autovideosink element:

gst-launch-1.0 rtspsrc location=rtsp://127.0.0.1:8554/test latency=0 !
rtpjitterbuffer ! rtph264depay ! h264parse ! decodebin ! autovideosink
sync=false

I use a very similar pipeline and it is low latency:

gst-launch-1.0 rtspsrc location=rtsp://127.0.0.1:8554/test latency=0 !
rtph264depay ! avdec_h264 ! autovideosink sync=false

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bhargavram

Re: streaming .h264 video file using appsrc via rtsp

Hi noscgag,

Thanks for your reply.

with this pipeline video is playing smoothly

"gst-launch-1.0 rtspsrc location=rtsp://127.0.0.1:8554/test latency=0 !
rtph264depay ! avdec_h264 ! autovideosink sync=false."

But unable to play this in vlc player(vlc as client and gstreamer-1.0 as
server)

"vlc rtsp://127.0.0.1:8554/test"

Regards,
Bhargav

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bhargavram

Re: streaming .h264 video file using appsrc via rtsp

Hi,

video file i am streaming is h264 encoded without container (using appsrc
and rtsp).

"Video: h264 (Constrained Baseline), yuv420p, 800x608, 25 fps, 25 tbr, 1200k
tbn, 50 tbc"

able to stream "using vlc/gstreamer on both server and client" ,
but unable to stream with "gstreamer on server and vlc on client."

Can anyone help ?

Regards,
Bhargav

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Thornton, Keith

AW: streaming .h264 video file using appsrc via rtsp

Hi,
I can stream H264 with rtsp to gstreamer and to VLC. What environment are you running on and what pipelines have you tried up till now

-----Ursprüngliche Nachricht-----
Von: gstreamer-devel [mailto:[hidden email]] Im Auftrag von bhargavram
Gesendet: Montag, 19. Februar 2018 08:51
An: [hidden email]
Betreff: Re: streaming .h264 video file using appsrc via rtsp

Hi,

video file i am streaming is h264 encoded without container (using appsrc and rtsp).

"Video: h264 (Constrained Baseline), yuv420p, 800x608, 25 fps, 25 tbr, 1200k tbn, 50 tbc"

able to stream "using vlc/gstreamer on both server and client" , but unable to stream with "gstreamer on server and vlc on client."

Can anyone help ?

Regards,
Bhargav

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bhargavram

Re: AW: streaming .h264 video file using appsrc via rtsp

Hi,

here is the source code of server(linux)
gstrtsp-server.c
<http://gstreamer-devel.966125.n4.nabble.com/file/t378196/gstrtsp-server.c>

In client(linux/windows) using the below command
"vlc rtsp://127.0.0.1:8554/test"

Note:
I am able to stream h264 encoded video file with mp4 container and high
profile.
"Video: h264 (High) (avc1 / 0x31637661), yuv420p, 800x608, 151 kb/s, 25 fps,
25 tbr, 12800 tbn, 50 tbc (default )"

Regards,
Bhargav

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Thornton, Keith

AW: AW: streaming .h264 video file using appsrc via rtsp

I see your h264 stream is already encoded before you push it to apsrc. Is it stream-format="byte-stream" and alignment="au"?

-----Ursprüngliche Nachricht-----
Von: gstreamer-devel [mailto:[hidden email]] Im Auftrag von bhargavram
Gesendet: Montag, 19. Februar 2018 09:57
An: [hidden email]
Betreff: Re: AW: streaming .h264 video file using appsrc via rtsp

Hi,

here is the source code of server(linux) gstrtsp-server.c <http://gstreamer-devel.966125.n4.nabble.com/file/t378196/gstrtsp-server.c>

In client(linux/windows) using the below command "vlc rtsp://127.0.0.1:8554/test"

Note:
I am able to stream h264 encoded video file with mp4 container and high profile.
"Video: h264 (High) (avc1 / 0x31637661), yuv420p, 800x608, 151 kb/s, 25 fps,
25 tbr, 12800 tbn, 50 tbc (default )"

Regards,
Bhargav

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bhargavram

Re: AW: AW: streaming .h264 video file using appsrc via rtsp

Hi,

yes stream-format="byte-stream" and alignment="au".

Regards,
M.Bhargav

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