is eos on shutdown needed when stopping a pipeline

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is eos on shutdown needed when stopping a pipeline

filnet
Hi,

gst-launch has an eos on shutdown option to make sure that, amongst other cases, video captured to file are properly finalized.

My question is whether this eos is also needed when programatically stopping a pipeline ?
Will a stop do the eos or is it the responsibility of the application to send that eos in any case ?

Philippe.


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AW: is eos on shutdown needed when stopping a pipeline

Thornton, Keith

Hi,

Eos is necessary for instance when you are writing to an mp4 container. Without the eos, the mov block will not be written (in the normal case) and the file will be unplayable

 

Von: gstreamer-devel [mailto:[hidden email]] Im Auftrag von philippe renon
Gesendet: Mittwoch, 13. Dezember 2017 09:32
An: [hidden email]
Betreff: is eos on shutdown needed when stopping a pipeline

 

Hi,

 

gst-launch has an eos on shutdown option to make sure that, amongst other cases, video captured to file are properly finalized.

 

My question is whether this eos is also needed when programatically stopping a pipeline ?

Will a stop do the eos or is it the responsibility of the application to send that eos in any case ?

 

Philippe.

 


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Re: AW: is eos on shutdown needed when stopping a pipeline

filnet
Ok. So just stopping a pipeline is not always enough when recording a video to file.

We have a pipeline as such:

dx9screencapsrc monitor=0 cursor=true ! tee name=t
    t. ! queue ! timeoverlay ! autovideosink
    t. ! queue ! videoconvert ! x264enc tune=zerolatency tune=zerolatency bitrate=498 ! mpegpsmux ! filesink location=D:\capture.mpg

The produced capture.mpg file is readable with VLC but not with Windows Media Player.
I am trying to understand why WMP can't play it.


Le Mercredi 13 décembre 2017 9h50, "Thornton, Keith" <[hidden email]> a écrit :


Hi,
Eos is necessary for instance when you are writing to an mp4 container. Without the eos, the mov block will not be written (in the normal case) and the file will be unplayable
 
Von: gstreamer-devel [mailto:[hidden email]] Im Auftrag von philippe renon
Gesendet: Mittwoch, 13. Dezember 2017 09:32
An: [hidden email]
Betreff: is eos on shutdown needed when stopping a pipeline
 
Hi,
 
gst-launch has an eos on shutdown option to make sure that, amongst other cases, video captured to file are properly finalized.
 
My question is whether this eos is also needed when programatically stopping a pipeline ?
Will a stop do the eos or is it the responsibility of the application to send that eos in any case ?
 
Philippe.
 
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Re: AW: is eos on shutdown needed when stopping a pipeline

Olivier Crête-3
Hi,

For PS files you need to write the header, so you need to send the EOS event to the pipeline then wait for the EOS message to be sent back. This is what gst-launch -e does.

Olivier

On December 13, 2017 10:35:52 AM EST, philippe renon <[hidden email]> wrote:

>Ok. So just stopping a pipeline is not always enough when recording a
>video to file.
>We have a pipeline as such:
>
>dx9screencapsrc monitor=0 cursor=true ! tee name=t
>    t. ! queue ! timeoverlay ! autovideosink
>    t. ! queue ! videoconvert ! x264enc tune=zerolatency
>tune=zerolatency bitrate=498 ! mpegpsmux ! filesink
>location=D:\capture.mpg
>The produced capture.mpg file is readable with VLC but not with Windows
>Media Player.I am trying to understand why WMP can't play it.
>
>Le Mercredi 13 décembre 2017 9h50, "Thornton, Keith"
><[hidden email]> a écrit :
>
>
>#yiv7462131277 #yiv7462131277 -- _filtered #yiv7462131277
>{font-family:SimSun;panose-1:2 1 6 0 3 1 1 1 1 1;} _filtered
>#yiv7462131277 {panose-1:2 4 5 3 5 4 6 3 2 4;} _filtered #yiv7462131277
>{font-family:Calibri;panose-1:2 15 5 2 2 2 4 3 2 4;} _filtered
>#yiv7462131277 {panose-1:2 1 6 0 3 1 1 1 1 1;} _filtered #yiv7462131277
>{panose-1:2 11 6 9 4 5 4 2 2 4;}#yiv7462131277 #yiv7462131277
>p.yiv7462131277MsoNormal, #yiv7462131277 li.yiv7462131277MsoNormal,
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>{color:#0563C1;text-decoration:underline;}#yiv7462131277 a:visited,
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>{}#yiv7462131277 Hi, Eos is necessary for instance when you are writing
>to an mp4 container. Without the eos, the mov block will not be written
>(in the normal case) and the file will be unplayable    Von:
>gstreamer-devel
>[mailto:[hidden email]]Im Auftrag von
>philippe renon
>Gesendet: Mittwoch, 13. Dezember 2017 09:32
>An: [hidden email]
>Betreff: is eos on shutdown needed when stopping a pipeline    Hi,   
>gst-launch has an eos on shutdown option to make sure that, amongst
>other cases, video captured to file are properly finalized.    My
>question is whether this eos is also needed when programatically
>stopping a pipeline ? Will a stop do the eos or is it the
>responsibility of the application to send that eos in any case ?   
>Philippe.    _______________________________________________
>gstreamer-devel mailing list
>[hidden email]
>https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
>
>  

--
Olivier Crête
[hidden email]
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