Hi Honey_Patouceul,
Thank you for your fast reply,
I tried both pipelines and it didn’t improve my issue.
you may tell what format your app is sending and try specifying this in appsrc SRC caps.
I am not sure about how to do this, do i have to specify the format parameter ? Arguments seems weird to me.
$ gst-inspect-1.0 appsrc
Factory Details:
Rank none (0)
Long-name AppSrc
Klass Generic/Source
Description Allow the application to feed buffers to a pipeline
Author David Schleef ds@schleef.org, Wim Taymans wim.taymans@gmail.com
Plugin Details:
Name app
Description Elements used to communicate with applications
Filename /usr/lib/aarch64-linux-gnu/gstreamer-1.0/libgstapp.so
Version 1.14.5
License LGPL
Source module gst-plugins-base
Source release date 2019-05-29
Binary package GStreamer Base Plugins (Ubuntu)
Origin URL gst-plugins-base1.0 package : Ubuntu
GObject
±—GInitiallyUnowned
±—GstObject
±—GstElement
±—GstBaseSrc
±—GstAppSrc
Implemented Interfaces:
GstURIHandler
Pad Templates:
SRC template: ‘src’
Availability: Always
Capabilities:
ANY
Element has no clocking capabilities.
URI handling capabilities:
Element can act as source.
Supported URI protocols:
appsrc
Pads:
SRC: ‘src’
Pad Template: ‘src’
Element Properties:
name : The name of the object
flags: readable, writable
String. Default: “appsrc0”
parent : The parent of the object
flags: readable, writable
Object of type “GstObject”
blocksize : Size in bytes to read per buffer (-1 = default)
flags: readable, writable
Unsigned Integer. Range: 0 - 4294967295 Default: 4096
num-buffers : Number of buffers to output before sending EOS (-1 = unlimited)
flags: readable, writable
Integer. Range: -1 - 2147483647 Default: -1
typefind : Run typefind before negotiating (deprecated, non-functional)
flags: readable, writable, deprecated
Boolean. Default: false
do-timestamp : Apply current stream time to buffers
flags: readable, writable
Boolean. Default: false
caps : The allowed caps for the src pad
flags: readable, writable
Caps (NULL)
size : The size of the data stream in bytes (-1 if unknown)
flags: readable, writable
Integer64. Range: -1 - 9223372036854775807 Default: -1
stream-type : the type of the stream
flags: readable, writable
Enum “GstAppStreamType” Default: 0, “stream”
(0): stream - GST_APP_STREAM_TYPE_STREAM
(1): seekable - GST_APP_STREAM_TYPE_SEEKABLE
(2): random-access - GST_APP_STREAM_TYPE_RANDOM_ACCESS
max-bytes : The maximum number of bytes to queue internally (0 = unlimited)
flags: readable, writable
Unsigned Integer64. Range: 0 - 18446744073709551615 Default: 200000
format : The format of the segment events and seek
flags: readable, writable
Enum “GstFormat” Default: 2, “bytes”
(0): undefined - GST_FORMAT_UNDEFINED
(1): default - GST_FORMAT_DEFAULT
(2): bytes - GST_FORMAT_BYTES
(3): time - GST_FORMAT_TIME
(4): buffers - GST_FORMAT_BUFFERS
(5): percent - GST_FORMAT_PERCENT
block : Block push-buffer when max-bytes are queued
flags: readable, writable
Boolean. Default: false
is-live : Whether to act as a live source
flags: readable, writable
Boolean. Default: false
min-latency : The minimum latency (-1 = default)
flags: readable, writable
Integer64. Range: -1 - 9223372036854775807 Default: -1
max-latency : The maximum latency (-1 = unlimited)
flags: readable, writable
Integer64. Range: -1 - 9223372036854775807 Default: -1
emit-signals : Emit need-data, enough-data and seek-data signals
flags: readable, writable
Boolean. Default: true
min-percent : Emit need-data when queued bytes drops below this percent of max-bytes
flags: readable, writable
Unsigned Integer. Range: 0 - 100 Default: 0
current-level-bytes : The number of currently queued bytes
flags: readable
Unsigned Integer64. Range: 0 - 18446744073709551615 Default: 0
duration : The duration of the data stream in nanoseconds (GST_CLOCK_TIME_NONE if unknown)
flags: readable, writable
Unsigned Integer64. Range: 0 - 18446744073709551615 Default: 18446744073709551615
Element Signals:
“need-data” : void user_function (GstElement* object,
guint arg0,
gpointer user_data);
“enough-data” : void user_function (GstElement* object,
gpointer user_data);
“seek-data” : gboolean user_function (GstElement* object,
guint64 arg0,
gpointer user_data);
Element Actions:
“push-buffer” : GstFlowReturn user_function (GstElement* object,
GstBuffer* arg0);
“push-buffer-list” : GstFlowReturn user_function (GstElement* object,
GstBufferList* arg0);
“push-sample” : GstFlowReturn user_function (GstElement* object,
GstSample* arg0);
“end-of-stream” : GstFlowReturn user_function (GstElement* object);
Camera info :
v4l2-ctl --list-formats-ext -d /dev/video0 :
ioctl: VIDIOC_ENUM_FMT
Index : 0
Type : Video Capture
Pixel Format: ‘YUYV’
Name : YUYV 4:2:2
Size: Discrete 1920x1080
Interval: Discrete 0.017s (60.000 fps)
