我正在尝试找出用于通过RTP传输AAC音频的正确gstreamer元素。
通过将 playbin 的点图转储到文件上，我可以得出结论，从 tsdemux 出来的大写字母是audio/mpeg,mpegversion:2,stream-format:adts .
如果我使用以下管道
gst-launch-1.0 -v filesrc location=$BA ! tsdemux ! audio/mpeg ! rtpmpapay ! filesink location=/tmp/test.rtp
它失败：
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
/GstPipeline:pipeline0/GstCapsFilter:capsfilter1: caps = audio/mpeg
WARNING: from element /GstPipeline:pipeline0/GstTSDemux:tsdemux0: Delayed linking failed.
Additional debug info:
/var/tmp/portage/media-libs/gstreamer-1.12.3/work/gstreamer-1.12.3/gst/parse/grammar.y(510): gst_parse_no_more_pads (): /GstPipeline:pipeline0/GstTSDemux:tsdemux0:
failed delayed linking some pad of GstTSDemux named tsdemux0 to some pad of GstRtpMPAPay named rtpmpapay0
ERROR: from element /GstPipeline:pipeline0/GstTSDemux:tsdemux0: Internal data stream error.
Additional debug info:
/var/tmp/portage/media-libs/gst-plugins-bad-1.12.3/work/gst-plugins-bad-1.12.3/gst/mpegtsdemux/mpegtsbase.c(1613): mpegts_base_loop (): /GstPipeline:pipeline0/GstTSDemux:tsdemux0:
streaming stopped, reason not-linked (-1)
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...
我应该使用哪个 gstreamer 元素将 AAC 音频包装在 RTP 数据包中？
我想它rtpmp4apay: RTP MPEG4 audio payloader.也许您也希望在有效载荷之前aacparse。