gst-launch-1.0 multipath specifying problem

[William Johnston]

Whoops! Sorry, I'll repost.

On 4/24/2020 9:52 AM, Nicolas Dufresne wrote:
> Hi William,
>
> please avoid replying to existing thread for new threads, otherwise you
> thread will be ignored.
>
> regards,
> Nicolas
>
> Le mercredi 22 avril 2020 à 21:52 -0500, William Johnston a écrit :
>> So a fit of setup:
>> misbdemux has on input and two outputs
>> misbfixcoordinates has two inputs and two outputs
>> misbsink has two inputs
>>
>> So I need it to fork into two paths at misbdemux, travel through
>> misbfixcoordinate, and end up at misbsink.
>>
>> I can test each path independently like so:
>>
>> gst-launch-1.0 filesrc location=/home/wgj/video/Truck.H264.ts !
>> misbdemux name=md ! tsdemux ! h264parse ! avdec_h264 ! videoconvert !
>> "video/x-raw, format=(string)RGB" ! misbfixcoordinates name=mfc !
>> misbsink name=ms
>>
>> and
>>
>> gst-launch-1.0 filesrc location=/home/wgj/video/Truck.H264.ts !
>> misbdemux name=md ! "meta/klv" ! misbfixcoordinates name=mfc ! misbsink
>> name=ms
>>
>> So far so good. However, when I combine them I get a problem. I can
>> combine them in two different ways:
>>
>> gst-launch-1.0 filesrc location=/home/wgj/video/Truck.H264.ts !
>> misbdemux name=md ! tsdemux ! h264parse ! avdec_h264 ! videoconvert !
>> "video/x-raw, format=(string)RGB" ! misbfixcoordinates name=mfc !
>> misbsink name=ms         md. ! "meta/klv" ! mfc. ! ms.
>>
>> gst-launch-1.0 filesrc location=/home/wgj/video/Truck.H264.ts !
>> misbdemux name=md ! "meta/klv" ! misbfixcoordinates name=mfc ! misbsink
>> name=ms      md. ! tsdemux ! h264parse ! avdec_h264 ! videoconvert !
>> "video/x-raw, format=(string)RGB" ! mfc. ! ms.
>>
>> Both fail with:
>>
>> WARNING: erroneous pipeline: syntax error
>>
>> In both cases it's the misbfixcoordinates in the second path (mfc.)
>> seems to be causing the failure.
>>
>> By dropping the second misbfixcoordinates I can make it run (though
>> without the behavior that I need):
>>
>> gst-launch-1.0 filesrc location=/home/wgj/video/Truck.H264.ts !
>> misbdemux name=md ! tsdemux ! h264parse ! avdec_h264 ! videoconvert !
>> "video/x-raw, format=(string)RGB" ! misbfixcoordinates name=mfc !
>> misbsink name=ms         md. ! "meta/klv" ! ms.
>>
>> gst-launch-1.0 filesrc location=/home/wgj/video/Truck.H264.ts !
>> misbdemux name=md ! "meta/klv" ! misbfixcoordinates name=mfc ! misbsink
>> name=ms       md. ! tsdemux ! h264parse ! avdec_h264 ! videoconvert !
>> "video/x-raw, format=(string)RGB" ! ms.
>>
>> So, I don't think it's anything to do with my misbfixcoordinates plug-in
>> as each path through it works independently and the problem doesn't
>> follow which pair of pads I'm using. It seems that there is a syntax
>> error in how I'm setting up the path. I don't see it though.
>>
>> Any ideas? I have been looking at this for two days now and I am no
>> closer to figuring it out.
>>
>>
>> _______________________________________________
>> gstreamer-devel mailing list
>> gstreamer-devel at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
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