Re: streaming .h264 video file using appsrc via rtsp

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Re: streaming .h264 video file using appsrc via rtsp

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

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

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

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

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

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

Thornton, Keith
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

-----Urspr√ľngliche 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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Re: AW: streaming .h264 video file using appsrc via rtsp

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

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

-----Urspr√ľngliche 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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Re: AW: AW: streaming .h264 video file using appsrc via rtsp

bhargavram
Hi,

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



Regards,
M.Bhargav
 





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