Corrupted Metadata from filesink element

[Prabhakar Lad]

Hi Tim,

Thanks for the response!

On Wed, Sep 3, 2014 at 9:20 PM, Tim Müller <tim at centricular.com> wrote:
> On Wed, 2014-09-03 at 19:40 +0100, Prabhakar Lad wrote:
>
> Hi,
>
>> I have the following pipieline in which the queue is holding data for
>> min-threshold time ie, for arround 10 seconds, the queue is connected
>> to 'valve' element in which drop property is set to TRUE, and the
>> valve is connected to filesink and the pipeline is streaming.
>>              ----------- -        ----------       ------------
>>  src        |            |       |         |       |            |
>> --------->   | queue  | ---->| valve |----->| filesink |
>>               |------------|       |----------|       |------------
>>
>>
>> After getting some event I change the min-threshold to zero and the
>> drop property of valve to false so that it writes to the file.
>> The pipeline works fine, but the mp4 created by this is not recognized
>> by any media players.
>>
>> I recon the gstreamer is not writing the metadata properly.
>>
>> What could be the issue any pointers would be helpful.
>
> Is the mp4mux before or after the valve?
>
> It must after the valve, as mp4 is not a streaming format, you can't
> just write some data and not write other data, the entire output stream
> needs to be intact and written to file as output.
>
Yes the mux was after the valve I moved it before the valve element and got
it working.

I have the following pipeline:-
  gst_element_link_many (appvideosrc, videoparse, videoqueue, vvalve,
mux, filesink, NULL);
  gst_element_link_many (appaudiosrc, audioparse, audioqueue, avalve,
mux, NULL);

On an event when I change the drop values I get following error,

"GStreamer-CRITICAL **: gst_caps_get_structure: assertion 'index <
GST_CAPS_LEN (caps)' failed"

Any possible reasons for the error ?(I dont get this error when the drop=false)

Is it possible to print the pipeline how it looks when completely linked ?

Thanks,
--Prabhakar

> Also, when done you need to make sure that mp4mux and filesink receive
> and process an eos event so that the file get finalised properly and
> headers get written.
>
> Cheers
>  -Tim
> --
> Tim Müller, Centricular Ltd - http://www.centricular.com
>
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