Gstreamer command line quotes within quotes need help

[Thomas Bond]

Hello,

How do I use quotes in quotes for gstreamer command line. This is gstreamer version 1.14.4 and ubuntu version 4.9.140-tegra using bash shell all running on Jetson Nano dev system.

I tried various escape methods and none worked.

The following has double quotes with quotes inside the sink definition and doesn't work.

gst-launch-1.0 playbin uri=file:///home/tom/Videos/UHD_demo_Nature.mp4 sink="glupload ! glshader fragment="\"ca t testfrag.frag\"" ! glimagesinkelement"

I assume it's an escape sequence issue, I tried bunch of ways to escape but I would rather not bias anyone looking at this problem. The opengl fragment is correct and works using a simple command line example:

gst-launch-1.0 videotestsrc ! glupload ! glshader fragment="\"cat testfrag.frag\"" ! glimagesink

Any ideas is this a command shell issue or gstreamer issue I need to correct concerning double quotes.

Here is the fragment:

#version 100

#ifdef GL_ES

precision mediump float;

#endif

varying vec2 v_texcoord;

uniform sampler2D tex;

uniform float time;

uniform float width;

uniform float height; vec4 myColor;

void main () {

    myColor = texture2D( tex, v_texcoord );
    gl_FragColor = myColor;
    gl_FragColor.r = myColor.b;
    gl_FragColor.b = myColor.r;

}

When I run the command line I get the following error: WARNING: erroneous pipeline: no element "100"

Thanks in advance.

    Tom

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

[Mathieu Duponchelle]

gst-launch-1.0 playbin uri=file:///home/meh/Videos/samsung_4k.mp4 sink="glupload ! glshader fragment=\"\"ca t testfrag.frag\"\" ! glimagesinkelement" seems to work

On 8/8/19 11:18 PM, Thomas Bond wrote:

Hello,

How do I use quotes in quotes for gstreamer command line. This is gstreamer version 1.14.4 and ubuntu version 4.9.140-tegra using bash shell all running on Jetson Nano dev system.

I tried various escape methods and none worked.

The following has double quotes with quotes inside the sink definition and doesn't work.

gst-launch-1.0 playbin uri=file:///home/tom/Videos/UHD_demo_Nature.mp4 sink="glupload ! glshader fragment="\"ca t testfrag.frag\"" ! glimagesinkelement"

I assume it's an escape sequence issue, I tried bunch of ways to escape but I would rather not bias anyone looking at this problem. The opengl fragment is correct and works using a simple command line example:

gst-launch-1.0 videotestsrc ! glupload ! glshader fragment="\"cat testfrag.frag\"" ! glimagesink

Any ideas is this a command shell issue or gstreamer issue I need to correct concerning double quotes.

Here is the fragment:

#version 100

#ifdef GL_ES

precision mediump float;

#endif

varying vec2 v_texcoord;

uniform sampler2D tex;

uniform float time;

uniform float width;

uniform float height; vec4 myColor;

void main () {

    myColor = texture2D( tex, v_texcoord );
    gl_FragColor = myColor;
    gl_FragColor.r = myColor.b;
    gl_FragColor.b = myColor.r;

}

When I run the command line I get the following error: WARNING: erroneous pipeline: no element "100"

Thanks in advance.

    Tom

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

[Mathieu Duponchelle]

Actually never mind, my mail client had poorly formatted your pipeline string

On 8/8/19 11:30 PM, Mathieu Duponchelle wrote:

gst-launch-1.0 playbin uri=file:///home/meh/Videos/samsung_4k.mp4 sink="glupload ! glshader fragment=\"\"ca t testfrag.frag\"\" ! glimagesinkelement" seems to work

On 8/8/19 11:18 PM, Thomas Bond wrote:

Hello,

How do I use quotes in quotes for gstreamer command line. This is gstreamer version 1.14.4 and ubuntu version 4.9.140-tegra using bash shell all running on Jetson Nano dev system.

I tried various escape methods and none worked.

The following has double quotes with quotes inside the sink definition and doesn't work.

gst-launch-1.0 playbin uri=file:///home/tom/Videos/UHD_demo_Nature.mp4 sink="glupload ! glshader fragment="\"ca t testfrag.frag\"" ! glimagesinkelement"

I assume it's an escape sequence issue, I tried bunch of ways to escape but I would rather not bias anyone looking at this problem. The opengl fragment is correct and works using a simple command line example:

gst-launch-1.0 videotestsrc ! glupload ! glshader fragment="\"cat testfrag.frag\"" ! glimagesink

Any ideas is this a command shell issue or gstreamer issue I need to correct concerning double quotes.

Here is the fragment:

#version 100

#ifdef GL_ES

precision mediump float;

#endif

varying vec2 v_texcoord;

uniform sampler2D tex;

uniform float time;

uniform float width;

uniform float height; vec4 myColor;

void main () {

    myColor = texture2D( tex, v_texcoord );
    gl_FragColor = myColor;
    gl_FragColor.r = myColor.b;
    gl_FragColor.b = myColor.r;

}

When I run the command line I get the following error: WARNING: erroneous pipeline: no element "100"

Thanks in advance.

    Tom

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel