Gstreamer command line quotes within quotes need help

[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
>>
>> -- 
>> TOM BOND
>> Vice President, Technology
>> 14 Old French Road
>> Honeoye Falls, NY 14472
>> Phone: 585-869-9243
>> Mobile: 585-662-8956
>> Email: tom.bond at entexpinc.com
>>
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>>
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