Wie man Senke vor eos Ereignis verhandeln?

Question

Wie Senke vor EOS-Ereignis zu verhandeln? Bitte erklären Sie mir, was ich falsch mache. Versuch Beispiel aus Tutorial 8 mit Python ausführen: https://gstreamer.freedesktop.org/documentation/tutorials/basic/short-cutting-the-pipeline.html

Fehlerausgang:

... 
    0:00:00.117266000 78270 0x7ff68399a6d0 FIXME    default gstutils.c:3902:gchar *gst_pad_create_stream_id_internal(GstPad *, GstElement *, const gchar *):<app_source:src> Creating random stream-id, consider implementing a deterministic way of creating a stream-id 
    0:00:00.119250000 78270 0x7ff68399a6d0 WARN     basesrc gstbasesrc.c:2939:void gst_base_src_loop(GstPad *):<app_source> error: Internal data stream error. 
    0:00:00.119260000 78270 0x7ff68399a6d0 WARN     basesrc gstbasesrc.c:2939:void gst_base_src_loop(GstPad *):<app_source> error: streaming stopped, reason not-negotiated (-4) 
    0:00:00.119408000 78270 0x7ff68399ade0 WARN   audiobasesink gstaudiobasesink.c:1119:gst_audio_base_sink_wait_event:<audio_sink> error: Sink not negotiated before eos event. 
    Error received from element app_source: gst-stream-error-quark: Internal data stream error. (1) 
    Debugging information: gstbasesrc.c(2939): void gst_base_src_loop(GstPad *)(): /GstPipeline:test-pipeline/GstAppSrc:app_source: 
    streaming stopped, reason not-negotiated (-4) 

    Process finished with exit code 0 

Answer 1

In meinem Fall habe ich eine falsche Audio-Kappen für die appsrc Eingangsdaten eingegeben hatte. Also änderte ich Audio-Funktionen String aus dieser:

AUDIO_CAPS = 'audio/x-raw, rate=(int)44100, format=(string)S16, ' \ 
      'channels=(int)1' 

dazu:

AUDIO_CAPS = 'audio/x-raw, rate=(int)44100, format=(string)S16LE, ' \ 
      'channels=(int)1, layout=(str)interleaved'