我有下面的语法,将在屏幕上显示我的网络摄像头的视频,并将视频编码为ogv文件.
我想做的是在屏幕上显示视频,但是将其从ogv文件更改为mp4和/或带有录制音频的AVI文件,有人可以帮助我.
感谢以下代码适用于ogv文件
我正在使用ubuntu 10.04 64位Linux和罗技c600网络摄像头
以下代码单独使用：
gst-launch-0.10 v4l2src ! 'video/x-raw-yuv,width=640,height=480,framerate=30/1' ! \
timeoverlay halignment=right valignment=bottom shaded-background=true ! \
clockoverlay halignment=left valignment=bottom text="M/D/Y:" shaded-background=true time-format="%m/%d/%Y %H:%M:%S" ! \
tee name=t_vid ! queue ! xvimagesink sync=false t_vid. ! queue ! videorate ! \
'video/x-raw-yuv,framerate=30/1' ! theoraenc ! queue ! oggmux ! \
filesink location=testogg.ogv
我尝试将两个不同的代码工作部分组合起来,看看它是否可行.顶部代码和底部代码
以下代码单独使用;
gst-launch-0.10 videotestsrc num-buffers=250 \
! 'video/x-raw-yuv,format=(fourcc)I420,width=320,height=240,framerate=25/1' \
! xvidenc ! queue ! mux. \
audiotestsrc num-buffers=440 ! audioconvert ! 'audio/x-raw-int,rate=44100,channels=2' \
! lame ! queue ! mux. \
avimux name=mux ! filesink location=test.avi
我拼凑在一起
合并的代码不起作用：
gst-launch-0.10 v4l2src ! 'video/x-raw-yuv,width=640,height=480,framerate=25/1' ! \
timeoverlay halignment=right valignment=bottom shaded-background=true ! \
clockoverlay halignment=left valignment=bottom text="M/D/Y:" shaded-background=true time-format="%m/%d/%Y %H:%M:%S" ! \
tee name=t_vid ! queue ! xvimagesink sync=false t_vid. ! queue ! videorate ! \
'video/x-raw-yuv,framerate=25/1' ! xvidenc ! queue ! mux. ! \
avimux name=mux ! filesink location=testavirt.avi
但是我收到一条错误消息
“警告：错误的管道：没有源元素的链接”
我试图使用这个编解码器的原因是让它在kdenlive中工作,这对于它将导入哪些编解码器非常特殊
好吧我按照下面的代码建议在调试模式下启动gstreamer
gst-launch-0.10 -v --gst-debug-level=3 ! v4l2src ! 'video/x-raw-yuv,width=640,height=480,framerate=25/1' ! \
timeoverlay halignment=right valignment=bottom shaded-background=true ! \
clockoverlay halignment=left valignment=bottom text="M/D/Y:" shaded-background=true time-format="%m/%d/%Y %H:%M:%S" ! \
tee name=t_vid ! queue ! xvimagesink sync=false t_vid. ! queue ! videorate ! \
'video/x-raw-yuv,framerate=25/1' ! xvidenc ! queue ! mux. ! \
avimux name=mux ! filesink location=testavirt.avi
它带回了这个调试信息
0:00:00.000783199 16068 0xade080 INFO GST_INIT gstquery.c:107:_gst_query_initialize: init queries
0:00:00.001852610 16068 0xade080 INFO GST_INIT gstmessage.c:73:_gst_message_initialize: init messages
0:00:00.002272948 16068 0xade080 INFO GST_PLUGIN_LOADING gstplugin.c:350:_gst_plugin_initialize: registering 0 static plugins
0:00:00.002463561 16068 0xade080 INFO GST_PLUGIN_LOADING gstplugin.c:255:gst_plugin_register_static: registered static plugin "staticelements"
0:00:00.002486054 16068 0xade080 INFO GST_PLUGIN_LOADING gstplugin.c:257:gst_plugin_register_static: added static plugin "staticelements", result: 1
0:00:00.003105961 16068 0xade080 INFO GST_REGISTRY gstregistry.c:1611:ensure_current_registry: reading registry cache: /home/rat/.gstreamer-0.10/registry.x86_64.bin
0:00:00.019757535 16068 0xade080 INFO GST_REGISTRY gstregistrybinary.c:614:gst_registry_binary_read_cache: loaded /home/rat/.gstreamer-0.10/registry.x86_64.bin in 0.016615 seconds
0:00:00.019860736 16068 0xade080 INFO GST_REGISTRY gstregistry.c:1471:scan_and_update_registry: Validating plugins from registry cache: /home/rat/.gstreamer-0.10/registry.x86_64.bin
0:00:00.021184812 16068 0xade080 INFO GST_REGISTRY gstregistry.c:1573:scan_and_update_registry: Registry cache has not changed
0:00:00.021194999 16068 0xade080 INFO GST_REGISTRY gstregistry.c:1640:ensure_current_registry: registry reading and updating done, result = 1
0:00:00.021201052 16068 0xade080 INFO GST_INIT gst.c:797:init_post: GLib runtime version: 2.24.1
0:00:00.021208042 16068 0xade080 INFO GST_INIT gst.c:799:init_post: GLib headers version: 2.24.1
0:00:00.021241674 16068 0xade080 INFO GST_PIPELINE gstparse.c:335:gst_parse_launch_full: parsing pipeline description '! v4l2src ! video/x-raw-yuv,width=640,height=480,framerate=25/1 ! timeoverlay halignment=right valignment=bottom shaded-background=true ! clockoverlay halignment=left valignment=bottom text=M/D/Y: shaded-background=true time-format=%m/%d/%Y\ %H:%M:%S ! tee name=t_vid ! queue ! xvimagesink sync=false t_vid. ! queue ! videorate ! video/x-raw-yuv,framerate=25/1 ! xvidenc ! queue ! mux. ! avimux name=mux ! filesink location=testavirt.avi '
0:00:00.022709253 16068 0xade080 INFO GST_PLUGIN_LOADING gstplugin.c:859:gst_plugin_load_file: plugin "/usr/lib/gstreamer-0.10/libgstvideo4linux2.so" loaded
0:00:00.022725847 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "v4l2src"
0:00:00.023022609 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstBaseSrc@0xd28030> adding pad 'src'
0:00:00.024528033 16068 0xade080 INFO GST_PLUGIN_LOADING gstplugin.c:859:gst_plugin_load_file: plugin "/usr/lib/gstreamer-0.10/libgstpango.so" loaded
0:00:00.024541435 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "timeoverlay"
0:00:00.024983829 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstTextOverlay@0xd42040> adding pad 'video_sink'
0:00:00.025034224 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstTextOverlay@0xd42040> adding pad 'src'
0:00:00.025085769 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "clockoverlay"
0:00:00.025208997 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstTextOverlay@0xd4c0f0> adding pad 'video_sink'
0:00:00.025256228 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstTextOverlay@0xd4c0f0> adding pad 'src'
0:00:00.025569620 16068 0xade080 INFO GST_PLUGIN_LOADING gstplugin.c:859:gst_plugin_load_file: plugin "/usr/lib/gstreamer-0.10/libgstcoreelements.so" loaded
0:00:00.025583335 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "tee"
0:00:00.025655142 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstTee@0xc23760> adding pad 'sink'
0:00:00.025678269 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "queue"
0:00:00.025770942 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstQueue@0xd581c0> adding pad 'sink'
0:00:00.025795370 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstQueue@0xd581c0> adding pad 'src'
0:00:00.026000635 16068 0xade080 INFO GST_PLUGIN_LOADING gstplugin.c:859:gst_plugin_load_file: plugin "/usr/lib/gstreamer-0.10/libgstxvimagesink.so" loaded
0:00:00.026012901 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "xvimagesink"
0:00:00.026142535 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstBaseSink@0xd26610> adding pad 'sink'
0:00:00.026172194 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "queue"
0:00:00.026202526 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstQueue@0xd58440> adding pad 'sink'
0:00:00.026225449 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstQueue@0xd58440> adding pad 'src'
0:00:00.027723125 16068 0xade080 INFO GST_PLUGIN_LOADING gstplugin.c:859:gst_plugin_load_file: plugin "/usr/lib/gstreamer-0.10/libgstvideorate.so" loaded
0:00:00.027735129 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "videorate"
0:00:00.027808311 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstVideoRate@0xd5f000> adding pad 'sink'
0:00:00.027834798 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstVideoRate@0xd5f000> adding pad 'src'
0:00:00.028089942 16068 0xade080 INFO GST_PLUGIN_LOADING gstplugin.c:859:gst_plugin_load_file: plugin "/usr/lib/gstreamer-0.10/libgstxvid.so" loaded
0:00:00.028101728 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "xvidenc"
0:00:00.028370479 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstXvidEnc@0xd5f1e0> adding pad 'sink'
0:00:00.028400842 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstXvidEnc@0xd5f1e0> adding pad 'src'
0:00:00.028481732 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "queue"
0:00:00.028508557 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstQueue@0xd586c0> adding pad 'sink'
0:00:00.028536913 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstQueue@0xd586c0> adding pad 'src'
0:00:00.029064786 16068 0xade080 INFO GST_PLUGIN_LOADING gstplugin.c:859:gst_plugin_load_file: plugin "/usr/lib/gstreamer-0.10/libgstavi.so" loaded
0:00:00.029077092 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "avimux"
0:00:00.029284486 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstAviMux@0xd73000> adding pad 'src'
0:00:00.029326884 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "filesink"
0:00:00.029378045 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstBaseSink@0xd75370> adding pad 'sink'
0:00:00.029412649 16068 0xade080 INFO filesink gstfilesink.c:306:gst_file_sink_set_location: filename : testavirt.avi
0:00:00.029420428 16068 0xade080 INFO filesink gstfilesink.c:307:gst_file_sink_set_location: uri : file:///home/rat/testavirt.avi
0:00:00.029433307 16068 0xade080 ERROR GST_PIPELINE ./grammar.y:799:_gst_parse_yyparse: link without source element
0:00:00.029446312 16068 0xade080 ERROR GST_PIPELINE ./grammar.y:862:_gst_parse_yyparse: link without source element
0:00:00.029456839 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "pipeline"
0:00:00.029535187 16068 0xade080 INFO GST_PIPELINE ./grammar.y:568:gst_parse_perform_link: linking v4l2src0:(any) to timeoverlay0:(any) (0/0) with caps "video/x-raw-yuv, width=(int)640, height=(int)480, framerate=(fraction)25/1"
0:00:00.029561950 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "capsfilter"
0:00:00.029628904 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstBaseTransform@0xd78150> adding pad 'sink'
0:00:00.029654353 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstBaseTransform@0xd78150> adding pad 'src'
0:00:00.029668706 16068 0xade080 INFO GST_STATES gstbin.c:1767:gst_bin_get_state_func:<pipeline0> getting state
0:00:00.029686262 16068 0xade080 INFO GST_STATES gstelement.c:2408:gst_element_continue_state:<capsfilter0> completed state change to NULL
0:00:00.029703721 16068 0xade080 INFO GST_ELEMENT_PADS gstutils.c:1694:gst_element_link_pads_full: trying to link element v4l2src0:(any) to element capsfilter0:sink
0:00:00.029712366 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:969:gst_element_get_static_pad: found pad capsfilter0:sink
0:00:00.029720912 16068 0xade080 INFO GST_PADS gstutils.c:1592:prepare_link_maybe_ghosting: v4l2src0 and capsfilter0 in same bin, no need for ghost pads
0:00:00.029744719 16068 0xade080 INFO GST_PADS gstpad.c:1956:gst_pad_link_prepare: trying to link v4l2src0:src and capsfilter0:sink
0:00:00.049689595 16068 0xade080 INFO GST_PADS gstpad.c:2139:gst_pad_link_full: linked v4l2src0:src and capsfilter0:sink, successful
0:00:00.049761719 16068 0xade080 INFO GST_ELEMENT_PADS gstutils.c:1694:gst_element_link_pads_full: trying to link element capsfilter0:src to element timeoverlay0:(any)
0:00:00.049782927 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:969:gst_element_get_static_pad: found pad capsfilter0:src
0:00:00.049801288 16068 0xade080 INFO GST_PADS gstutils.c:1028:gst_pad_check_link: trying to link capsfilter0:src and timeoverlay0:video_sink
0:00:00.050467449 16068 0xade080 INFO GST_PADS gstutils.c:1592:prepare_link_maybe_ghosting: capsfilter0 and timeoverlay0 in same bin, no need for ghost pads
0:00:00.050498205 16068 0xade080 INFO GST_PADS gstpad.c:1956:gst_pad_link_prepare: trying to link capsfilter0:src and timeoverlay0:video_sink
0:00:00.051365172 16068 0xade080 INFO GST_PADS gstpad.c:2139:gst_pad_link_full: linked capsfilter0:src and timeoverlay0:video_sink, successful
0:00:00.051410274 16068 0xade080 INFO GST_PIPELINE ./grammar.y:568:gst_parse_perform_link: linking timeoverlay0:(any) to clockoverlay0:(any) (0/0) with caps "(NULL)"
0:00:00.051435266 16068 0xade080 INFO GST_ELEMENT_PADS gstutils.c:1694:gst_element_link_pads_full: trying to link element timeoverlay0:(any) to element clockoverlay0:(any)
0:00:00.051452770 16068 0xade080 INFO GST_PADS gstutils.c:1028:gst_pad_check_link: trying to link timeoverlay0:src and clockoverlay0:video_sink
0:00:00.052124174 16068 0xade080 INFO GST_PADS gstutils.c:1592:prepare_link_maybe_ghosting: timeoverlay0 and clockoverlay0 in same bin, no need for ghost pads
0:00:00.052152481 16068 0xade080 INFO GST_PADS gstpad.c:1956:gst_pad_link_prepare: trying to link timeoverlay0:src and clockoverlay0:video_sink
0:00:00.052819379 16068 0xade080 INFO GST_PADS gstpad.c:2139:gst_pad_link_full: linked timeoverlay0:src and clockoverlay0:video_sink, successful
0:00:00.052851632 16068 0xade080 INFO GST_PIPELINE ./grammar.y:568:gst_parse_perform_link: linking clockoverlay0:(any) to t_vid:(any) (0/0) with caps "(NULL)"
0:00:00.052872037 16068 0xade080 INFO GST_ELEMENT_PADS gstutils.c:1694:gst_element_link_pads_full: trying to link element clockoverlay0:(any) to element t_vid:(any)
0:00:00.052888711 16068 0xade080 INFO GST_PADS gstutils.c:1028:gst_pad_check_link: trying to link clockoverlay0:src and t_vid:sink
0:00:00.053539972 16068 0xade080 INFO GST_PADS gstutils.c:1592:prepare_link_maybe_ghosting: clockoverlay0 and t_vid in same bin, no need for ghost pads
0:00:00.053567822 16068 0xade080 INFO GST_PADS gstpad.c:1956:gst_pad_link_prepare: trying to link clockoverlay0:src and t_vid:sink
0:00:00.054209057 16068 0xade080 INFO GST_PADS gstpad.c:2139:gst_pad_link_full: linked clockoverlay0:src and t_vid:sink, successful
0:00:00.054240988 16068 0xade080 INFO GST_PIPELINE ./grammar.y:568:gst_parse_perform_link: linking t_vid:(any) to queue0:(any) (0/0) with caps "(NULL)"
0:00:00.054261353 16068 0xade080 INFO GST_ELEMENT_PADS gstutils.c:1694:gst_element_link_pads_full: trying to link element t_vid:(any) to element queue0:(any)
0:00:00.054357775 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<t_vid> adding pad 'src0'
0:00:00.054391930 16068 0xade080 INFO GST_PADS gstutils.c:1592:prepare_link_maybe_ghosting: t_vid and queue0 in same bin, no need for ghost pads
0:00:00.054416401 16068 0xade080 INFO GST_PADS gstpad.c:1956:gst_pad_link_prepare: trying to link t_vid:src0 and queue0:sink
0:00:00.055097197 16068 0xade080 INFO GST_PADS gstpad.c:2139:gst_pad_link_full: linked t_vid:src0 and queue0:sink, successful
0:00:00.055131050 16068 0xade080 INFO GST_PIPELINE ./grammar.y:568:gst_parse_perform_link: linking queue0:(any) to xvimagesink0:(any) (0/0) with caps "(NULL)"
0:00:00.055151268 16068 0xade080 INFO GST_ELEMENT_PADS gstutils.c:1694:gst_element_link_pads_full: trying to link element queue0:(any) to element xvimagesink0:(any)
0:00:00.055167783 16068 0xade080 INFO GST_PADS gstutils.c:1028:gst_pad_check_link: trying to link queue0:src and xvimagesink0:sink
0:00:00.055842243 16068 0xade080 INFO GST_PADS gstutils.c:1592:prepare_link_maybe_ghosting: queue0 and xvimagesink0 in same bin, no need for ghost pads
0:00:00.055870005 16068 0xade080 INFO GST_PADS gstpad.c:1956:gst_pad_link_prepare: trying to link queue0:src and xvimagesink0:sink
0:00:00.056567773 16068 0xade080 INFO GST_PADS gstpad.c:2139:gst_pad_link_full: linked queue0:src and xvimagesink0:sink, successful
0:00:00.056606717 16068 0xade080 INFO GST_PARENTAGE gstbin.c:3707:gst_bin_get_by_name: [pipeline0]: looking up child element t_vid
0:00:00.056632626 16068 0xade080 INFO GST_PIPELINE ./grammar.y:568:gst_parse_perform_link: linking t_vid:t_vid to queue1:(any) (0/0) with caps "(NULL)"
0:00:00.056651644 16068 0xade080 INFO GST_ELEMENT_PADS gstutils.c:1694:gst_element_link_pads_full: trying to link element t_vid:(any) to element queue1:(any)
0:00:00.056719250 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<t_vid> adding pad 'src1'
0:00:00.056741754 16068 0xade080 INFO GST_PADS gstutils.c:1592:prepare_link_maybe_ghosting: t_vid and queue1 in same bin, no need for ghost pads
0:00:00.056764926 16068 0xade080 INFO GST_PADS gstpad.c:1956:gst_pad_link_prepare: trying to link t_vid:src1 and queue1:sink
0:00:00.057431047 16068 0xade080 INFO GST_PADS gstpad.c:2139:gst_pad_link_full: linked t_vid:src1 and queue1:sink, successful
0:00:00.057462976 16068 0xade080 INFO GST_PIPELINE ./grammar.y:568:gst_parse_perform_link: linking queue1:(any) to videorate0:(any) (0/0) with caps "(NULL)"
0:00:00.057520574 16068 0xade080 INFO GST_ELEMENT_PADS gstutils.c:1694:gst_element_link_pads_full: trying to link element queue1:(any) to element videorate0:(any)
0:00:00.057541803 16068 0xade080 INFO GST_PADS gstutils.c:1028:gst_pad_check_link: trying to link queue1:src and videorate0:sink
0:00:00.058218898 16068 0xade080 INFO GST_PADS gstutils.c:1592:prepare_link_maybe_ghosting: queue1 and videorate0 in same bin, no need for ghost pads
0:00:00.058247509 16068 0xade080 INFO GST_PADS gstpad.c:1956:gst_pad_link_prepare: trying to link queue1:src and videorate0:sink
0:00:00.058913420 16068 0xade080 INFO GST_PADS gstpad.c:2139:gst_pad_link_full: linked queue1:src and videorate0:sink, successful
0:00:00.058945216 16068 0xade080 INFO GST_PIPELINE ./grammar.y:568:gst_parse_perform_link: linking videorate0:(any) to xvidenc0:(any) (0/0) with caps "video/x-raw-yuv, framerate=(fraction)25/1"
0:00:00.058980252 16068 0xade080 INFO GST_ELEMENT_FACTORY gstelementfactory.c:375:gst_element_factory_create: creating element "capsfilter"
0:00:00.059030050 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstBaseTransform@0xd78410> adding pad 'sink'
0:00:00.059070176 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<GstBaseTransform@0xd78410> adding pad 'src'
0:00:00.059099030 16068 0xade080 INFO GST_STATES gstbin.c:1767:gst_bin_get_state_func:<pipeline0> getting state
0:00:00.059133982 16068 0xade080 INFO GST_STATES gstelement.c:2408:gst_element_continue_state:<capsfilter1> completed state change to NULL
0:00:00.059161447 16068 0xade080 INFO GST_ELEMENT_PADS gstutils.c:1694:gst_element_link_pads_full: trying to link element videorate0:(any) to element capsfilter1:sink
0:00:00.059178858 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:969:gst_element_get_static_pad: found pad capsfilter1:sink
0:00:00.059192810 16068 0xade080 INFO GST_PADS gstutils.c:1592:prepare_link_maybe_ghosting: videorate0 and capsfilter1 in same bin, no need for ghost pads
0:00:00.059215498 16068 0xade080 INFO GST_PADS gstpad.c:1956:gst_pad_link_prepare: trying to link videorate0:src and capsfilter1:sink
0:00:00.059916866 16068 0xade080 INFO GST_PADS gstpad.c:2139:gst_pad_link_full: linked videorate0:src and capsfilter1:sink, successful
0:00:00.059949637 16068 0xade080 INFO GST_ELEMENT_PADS gstutils.c:1694:gst_element_link_pads_full: trying to link element capsfilter1:src to element xvidenc0:(any)
0:00:00.059966690 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:969:gst_element_get_static_pad: found pad capsfilter1:src
0:00:00.059982820 16068 0xade080 INFO GST_PADS gstutils.c:1028:gst_pad_check_link: trying to link capsfilter1:src and xvidenc0:sink
0:00:00.060795894 16068 0xade080 INFO GST_PADS gstutils.c:1592:prepare_link_maybe_ghosting: capsfilter1 and xvidenc0 in same bin, no need for ghost pads
0:00:00.060824501 16068 0xade080 INFO GST_PADS gstpad.c:1956:gst_pad_link_prepare: trying to link capsfilter1:src and xvidenc0:sink
0:00:00.061632768 16068 0xade080 INFO GST_PADS gstpad.c:2139:gst_pad_link_full: linked capsfilter1:src and xvidenc0:sink, successful
0:00:00.083857679 16068 0xade080 INFO GST_PIPELINE ./grammar.y:568:gst_parse_perform_link: linking xvidenc0:(any) to queue2:(any) (0/0) with caps "(NULL)"
0:00:00.083881589 16068 0xade080 INFO GST_ELEMENT_PADS gstutils.c:1694:gst_element_link_pads_full: trying to link element xvidenc0:(any) to element queue2:(any)
0:00:00.083891480 16068 0xade080 INFO GST_PADS gstutils.c:1028:gst_pad_check_link: trying to link xvidenc0:src and queue2:sink
0:00:00.083904166 16068 0xade080 INFO GST_PADS gstutils.c:1592:prepare_link_maybe_ghosting: xvidenc0 and queue2 in same bin, no need for ghost pads
0:00:00.083914692 16068 0xade080 INFO GST_PADS gstpad.c:1956:gst_pad_link_prepare: trying to link xvidenc0:src and queue2:sink
0:00:00.083925117 16068 0xade080 INFO GST_PADS gstpad.c:2139:gst_pad_link_full: linked xvidenc0:src and queue2:sink, successful
0:00:00.083937094 16068 0xade080 INFO GST_PARENTAGE gstbin.c:3707:gst_bin_get_by_name: [pipeline0]: looking up child element mux
0:00:00.083947729 16068 0xade080 INFO GST_PIPELINE ./grammar.y:568:gst_parse_perform_link: linking queue2:(any) to mux:mux (0/0) with caps "(NULL)"
0:00:00.083955323 16068 0xade080 INFO GST_ELEMENT_PADS gstutils.c:1694:gst_element_link_pads_full: trying to link element queue2:(any) to element mux:(any)
0:00:00.084035330 16068 0xade080 INFO GST_ELEMENT_PADS gstelement.c:722:gst_element_add_pad:<mux> adding pad 'video_00'
0:00:00.084049981 16068 0xade080 INFO GST_PADS gstutils.c:1592:prepare_link_maybe_ghosting: queue2 and mux in same bin, no need for ghost pads
0:00:00.084060734 16068 0xade080 INFO GST_PADS gstpad.c:1956:gst_pad_link_prepare: trying to link queue2:src and mux:video_00
0:00:00.084075560 16068 0xade080 INFO GST_PADS gstpad.c:2139:gst_pad_link_full: linked queue2:src and mux:video_00, successful
0:00:00.084087455 16068 0xade080 INFO GST_PIPELINE ./grammar.y:568:gst_parse_perform_link: linking mux:(any) to filesink0:(any) (0/0) with caps "(NULL)"
0:00:00.084095861 16068 0xade080 INFO GST_ELEMENT_PADS gstutils.c:1694:gst_element_link_pads_full: trying to link element mux:(any) to element filesink0:(any)
0:00:00.084103574 16068 0xade080 INFO GST_PADS gstutils.c:1028:gst_pad_check_link: trying to link mux:src and filesink0:sink
0:00:00.084114625 16068 0xade080 INFO GST_PADS gstutils.c:1592:prepare_link_maybe_ghosting: mux and filesink0 in same bin, no need for ghost pads
0:00:00.084124013 16068 0xade080 INFO GST_PADS gstpad.c:1956:gst_pad_link_prepare: trying to link mux:src and filesink0:sink
0:00:00.084131937 16068 0xade080 INFO GST_PADS gstpad.c:2139:gst_pad_link_full: linked mux:src and filesink0:sink, successful
WARNING: erroneous pipeline: link without source element
rat@ubu64:~$
解决方法:
如果要使用mp4或avi,则需要使用不同的编码器.我推荐h264或mp4v. h264enc在丑陋的插件包中.
如果你想要使用mp4路线,可以使用mp4v作为视频,使用mp4a作为音频.我目前没有我的linux盒子,所以这可能不完美.
gst-launch v4l2src ! your caps ! other elements ! tee name=t_vid ! \
xvimagesink sync=false t_vid. ! queue ! caps adjustment if you need it ! \
x264enc ! queue ! avi_mux. \
alsasrc ! caps ! faac (or whatever will go with avi) ! avimux name=avi_mux ! \
filesink location=testavi.avi
这是avi版本.显然,您可以将编码器调整为适用于容器的任何格式.如果你使用mp4mux它非常相似,只需用mp4mux换掉我的avimux东西.
您可能需要调整alsamixer以确保管道从您的网络摄像头捕获而不是您的某个麦克风插孔.
此外,您可能需要使队列缓冲区无限制以减少延迟.