Custom buffer?

[Bilel Bghiel]

Linking 2 elements (flxMux video & avdec_h264) results in the following
error:

GST_CAPS
gstpad.c:3235:gst_pad_query_accept_caps_default:<avdec_h26417171:sink>
caps: video/x-h264, stream-format=(string)avc, width=(int)1280,
height=(int)720,
codec_data=(buffer)014d001fffe1000e674d001f95a814016e9b8080808101000468ee3c80
were not compatible with: video/x-h264, alignment=(string)au,
stream-format=(string){ avc, byte-stream }; video/x-h264,
alignment=(string)nal, stream-format=(string)byte-stream
GST_CAPS gstpad.c:5757:pre_eventfunc_check:<avdec_h26417171:sink> caps
video/x-h264, stream-format=(string)avc, width=(int)1280, height=(int)720,
codec_data=(buffer)014d001fffe1000e674d001f95a814016e9b8080808101000468ee3c80
not accepted


The only thing I see different here is the codec_data buffer. Is there a
way to custom generate this or is there something else I'm missing?

Kind regards
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