我想用DM365通过视频、音频同压到同一个文件里面，该文件可以用通用的播放器播放，从processors.wiki.ti.com/.../Example_GStreamer_Pipelines 看到，通过Gstreamer可以生成MP4文件：
gst-launch -v v4l2src always-copy=FALSE num-buffers=2000 input-src=composite ! ‘video/x-raw-yuv,format=(fourcc)NV12,width=736,height=576’ ! TIVidenc1 codecName=h264enc engineName=codecServer byteStream=FALSE ! qtmux ! filesink location=output_cap_.mp4
试了一下，可以，但我希望音频也加进去，输入以下代码：
gst-launch -v v4l2src always-copy=FALSE num-buffers=2000 input-src=composite ! 'video/x-raw-yuv,format=(fourcc)NV12,width=736,height=576' ! TIVidenc1 codecName=h264enc engineName=codecServer byteStream=FALSE ! queue ! qtmux name = mux ! filesink location=output_cap_.mp4 alsasrc num-buffers=1000 ! TIAudenc1 codecName=aaclcenc engineName=codecServer ! queue ! mux.
可以运行，但是没有数据输出，ctrl+c后output_cap_.mp4只有221字节。运行信息：
root@dm365-evm:/usr/share/ti/dvsdk-demos# gst-launch -v v4l2src always-copy=FALS
E num-buffers=2000 input-src=composite ! 'video/x-raw-yuv,format=(fourcc)NV12,wi
dth=736,height=576' ! TIVidenc1 codecName=h264enc engineName=codecServer byteStr
eam=FALSE ! queue ! qtmux name = mux ! filesink location=output_cap_.mp4 alsasrc
num-buffers=1000 ! TIAudenc1 codecName=aaclcenc engineName=codecServer ! queue
! mux.
Setting pipeline to PAUSED ...
davinci_resizer davinci_resizer.2: RSZ_G_CONFIG:0:1:124
davinci_previewer davinci_previewer.2: ipipe_set_preview_config
vpfe-capture vpfe-capture: IPIPE Chained
vpfe-capture vpfe-capture: Resizer present
tvp514x 1-005d: invalid control id -2147483648
EVM: switch to tvp5146 SD video input
tvp514x 1-005d: tvp5146 (Version - 0x08) found at 0xba (DaVinci I2C adapter)
tvp514x 1-005d: invalid control id 9963780
tvp514x 1-005d: invalid control id 9963781
tvp514x 1-005d: invalid control id 9963782
tvp514x 1-005d: invalid control id 9963783
tvp514x 1-005d: invalid control id 9963784
tvp514x 1-005d: invalid control id 9963785
tvp514x 1-005d: invalid control id 9963786
tvp514x 1-005d: invalid control id 9963787
tvp514x 1-005d: invalid control id 9963788
tvp514x 1-005d: invalid control id 9963789
tvp514x 1-005d: invalid control id 9963790
tvp514x 1-005d: invalid control id 9963791
tvp514x 1-005d: invalid control id 9963792
tvp514x 1-005d: invalid control id 9963793
tvp514x 1-005d: invalid control id 9963795
tvp514x 1-005d: invalid control id 9963796
tvp514x 1-005d: invalid control id 9963797
tvp514x 1-005d: invalid control id 9963798
tvp514x 1-005d: invalid control id 9963799
tvp514x 1-005d: invalid control id 9963800
tvp514x 1-005d: invalid control id 9963801
tvp514x 1-005d: invalid control id 9963802
tvp514x 1-005d: invalid control id 9963803
tvp514x 1-005d: invalid control id 9963804
tvp514x 1-005d: invalid control id 9963805
tvp514x 1-005d: invalid control id 9963806
tvp514x 1-005d: invalid control id 9963807
tvp514x 1-005d: invalid control id 9963808
tvp514x 1-005d: invalid control id 9963809
/GstPipeline:pipeline0/GstAlsaSrc:alsasrc0: actual-buffer-time = 200000
/GstPipeline:pipeline0/vpfe-capture vpfe-capture: width = 1, height = 1, bpp = 2
GstAlsaSrc:alsasrc0: actual-latevpfe-capture vpfe-capture: adjusted width = 16, height = 2, bpp = 2, bytesperline = 32, sizeimage = 64
ncy-time = 10000
/GstPipeline:pvpfe-capture vpfe-capture: width = 32768, height = 32768, bpp = 2
ipeline0/GstAlsavpfe-capture vpfe-capture: adjusted width = 2176, height = 1536, bpp = 2, bytesperline = 4352, sizeimage = 6684672
Src:alsasrc0.GstPad:src: caps = vpfe-capture vpfe-capture: width = 1, height = 1, bpp = 1
audio/x-raw-int,vpfe-capture vpfe-capture: adjusted width = 32, height = 2, bpp = 1, bytesperline = 32, sizeimage = 96
endianness=(int)1234, signed=(bvpfe-capture vpfe-capture: width = 32768, height = 32768, bpp = 1
oolean)true, widvpfe-capture vpfe-capture: adjusted width = 2176, height = 1536, bpp = 1, bytesperline = 2176, sizeimage = 5013504
th=(int)16, depth=(int)16, rate=vpfe-capture vpfe-capture: width = 1, height = 1, bpp = 2
(int)44100, chanvpfe-capture vpfe-capture: adjusted width = 16, height = 2, bpp = 2, bytesperline = 32, sizeimage = 64
nels=(int)2
vpfe-capture vpfe-capture: width = 8, height = 2, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 16, height = 2, bpp = 2, bytesperline = 32, sizeimage = 64
vpfe-capture vpfe-capture: width = 32768, height = 32768, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 2176, height = 1536, bpp = 2, bytesperline = 4352, sizeimage = 6684672
vpfe-capture vpfe-capture: width = 32775, height = 32769, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 2176, height = 1536, bpp = 2, bytesperline = 4352, sizeimage = 6684672
vpfe-capture vpfe-capture: width = 1, height = 1, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 16, height = 2, bpp = 2, bytesperline = 32, sizeimage = 64
vpfe-capture vpfe-capture: width = 8, height = 2, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 16, height = 2, bpp = 2, bytesperline = 32, sizeimage = 64
vpfe-capture vpfe-capture: width = 32768, height = 32768, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 2176, height = 1536, bpp = 2, bytesperline = 4352, sizeimage = 6684672
vpfe-capture vpfe-capture: width = 32775, height = 32769, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 2176, height = 1536, bpp = 2, bytesperline = 4352, sizeimage = 6684672
vpfe-capture vpfe-capture: width = 1, height = 1, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 16, height = 2, bpp = 2, bytesperline = 32, sizeimage = 64
vpfe-capture vpfe-capture: width = 8, height = 2, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 16, height = 2, bpp = 2, bytesperline = 32, sizeimage = 64
vpfe-capture vpfe-capture: width = 32768, height = 32768, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 2176, height = 1536, bpp = 2, bytesperline = 4352, sizeimage = 6684672
vpfe-capture vpfe-capture: width = 32775, height = 32769, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 2176, height = 1536, bpp = 2, bytesperline = 4352, sizeimage = 6684672
vpfe-capture vpfe-capture: width = 1, height = 1, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 16, height = 2, bpp = 2, bytesperline = 32, sizeimage = 64
vpfe-capture vpfe-capture: width = 8, height = 2, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 16, height = 2, bpp = 2, bytesperline = 32, sizeimage = 64
vpfe-capture vpfe-capture: width = 32768, height = 32768, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 2176, height = 1536, bpp = 2, bytesperline = 4352, sizeimage = 6684672
vpfe-capture vpfe-capture: width = 32775, height = 32769, bpp = 2
vpfe-capture vpfe-capture: adjusted width = 2176, height = 1536, bpp = 2, bytesperline = 4352, sizeimage = 6684672
vpfe-capture vpfe-capture: width = 736, height = 576, bpp = 1
vpfe-capture vpfe-capture: adjusted width = 736, height = 576, bpp = 1, bytesperline = 736, sizeimage = 635904
vpfe-capture vpfe-capture: width = 736, height = 576, bpp = 1
vpfe-capture vpfe-capture: adjusted width = 736, height = 576, bpp = 1, bytesperline = 736, sizeimage = 635904
/GstPipeline:pipeline0/GstV4l2Src:v4l2src0: queue-size = 3
/GstPipeline:pipeline0/GstV4l2Src:v4l2src0.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)NV12, framerate=(fraction)30000/1001, width=(int)736, height=(int)576
Pipeline is live and does not need PREROLL ...
WARNING: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Failed to set input 0 on device /dev/video0.
Additional debug info:
v4l2_calls.c(975): gst_v4l2_set_input (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
system error: Invalid argument
WARNING: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Video input device did not accept new frame rate setting.
Additional debug info:
v4l2src_calls.c(342): gst_v4l2src_set_capture (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
system error: Invalid argument
Setting pipeline to PLAYING ...
New clock: GstAudioSrcClock
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = video/x-raw-yuv, format=(fourcc)NV12, framerate=(fraction)30000/1001, width=(int)736, height=(int)576
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = video/x-raw-yuv, format=(fourcc)NV12, framerate=(fraction)30000/1001, width=(int)736, height=(int)576
/GstPipeline:pipeline0/GstTIAudenc1:tiaudenc10.GstPad:sink: caps = audio/x-raw-int, endianness=(int)1234, signed=(boolean)true, width=(int)16, depth=(int)16, rate=(int)44100, channels=(int)2
/GstPipeline:pipeline0/GstTIAudenc1:tiaudenc10.GstPad:sink: caps = audio/x-raw-int, endianness=(int)1234, signed=(boolean)true, width=(int)16, depth=(int)16, rate=(int)44100, channels=(int)2
/GstPipeline:pipeline0/GstTIAudenc1:tiaudenc10.GstPad:src: caps = audio/mpeg, mpegversion=(int)4, channels=(int)2, rate=(int)44100, bitrate=(int)64000
/GstPipeline:pipeline0/GstQueue:queue1.GstPad:sink: caps = audio/mpeg, mpegversion=(int)4, channels=(int)2, rate=(int)44100, bitrate=(int)64000
/GstPipeline:pipeline0/GstQueue:queue1.GstPad:src: caps = audio/mpeg, mpegversion=(int)4, channels=(int)2, rate=(int)44100, bitrate=(int)64000
/GstPipeline:pipeline0/GstQTMux:mux.GstPad:audio_00: caps = audio/mpeg, mpegversion=(int)4, channels=(int)2, rate=(int)44100, bitrate=(int)64000
/GstPipeline:pipeline0/GstTIVidenc1:tividenc10.GstPad:src: caps = video/x-h264, framerate=(fraction)30000/1001, width=(int)736, height=(int)576, codec_data=(buffer)01640028ffe1005a67640028ad84054562b8ac5474202a2b15c562a3a1015158ae2b1510
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:sink: caps = video/x-h264, framerate=(fraction)30000/1001, width=(int)736, height=(int)576, codec_data=(buffer)01640028ffe1005a67640028ad84054562b8ac5474202a2b15c562a3a1015158ae2b151d080a8a0
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:src: caps = video/x-h264, framerate=(fraction)30000/1001, width=(int)736, height=(int)576, codec_data=(buffer)01640028ffe1005a67640028ad84054562b8ac5474202a2b15c562a3a1015158ae2b151d080a8ac0
/GstPipeline:pipeline0/GstQTMux:mux.GstPad:video_00: caps = video/x-h264, framerate=(fraction)30000/1001, width=(int)736, height=(int)576, codec_data=(buffer)01640028ffe1005a67640028ad84054562b8ac5474202a2b15c562a3a1015158ae2b151d080a80
/GstPipeline:pipeline0/GstFileSink:filesink0.GstPad:sink: caps = video/quicktime, variant=(string)apple
程序停在这里，然后ctrl+c 结束它
Caught interrupt -- handling interrupt.
Interrupt: Stopping pipeline ...
Execution ended after 12751410419 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
/GstPipeline:pipeline0/GstFileSink:filesink0.GstPad:sink: caps = NULL
/GstPipeline:pipeline0/GstQTMux:mux.GstPad:video_00: caps = NULL
/GstPipeline:pipeline0/GstQTMux:mux.GstPad:audio_00: caps = NULL
/GstPipeline:pipeline0/GstQTMux:mux.GstPad:src: caps = NULL
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:src: caps = NULL
/GstPipeline:pipeline0/GstQueue:queue0.GstPad:sink: caps = NULL
/GstPipeline:pipeline0/GstQueue:queue1.GstPad:src: caps = NULL
/GstPipeline:pipeline0/GstQueue:queue1.GstPad:sink: caps = NULL
/GstPipeline:pipeline0/GstTIVidenc1:tividenc10.GstPad:src: caps = NULL
/GstPipeline:pipeline0/GstTIVidenc1:tividenc10.GstPad:sink: caps = NULL
/GstPipeline:pipeline0/GstTIAudenc1:tiaudenc10.GstPad:src: caps = NULL
/GstPipeline:pipeline0/GstTIAudenc1:tiaudenc10.GstPad:sink: caps = NULL
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:src: caps = NULL
/GstPipeline:pipeline0/GstCapsFilter:capsfilter0.GstPad:sink: caps = NULL
/GstPipeline:pipeline0/GstAlsaSrc:alsasrc0.GstPad:src: caps = NULL
libv4l2: error turning off stream: Invalid argument
(gst-launvpfe-capture vpfe-capture: device started
ch-0.10:2296): GStreamer-CRITICAL **: Failed to deactivate pad v4l2src0:src, very bad
Setting pipeline to NULL ...
libv4l2: error turning off stream: Invalid argument
(gst-launch-0.10:2296): GStreamer-CRITICAL **: Failed to deactivate pad v4l2src0:src, very bad
Freeing pipeline ...
如何解决这个问题，是不是我的输入命令有错？