我必须为基于 Yocto 的 OpenSTLinux 系统开发 Qt/QML 应用程序。该应用程序必须播放视频和音频。在“gstreamer”插件下方，我已安装在我的 OpenSTLinux 映像中：
gstreamer1.0
gstreamer1.0-插件-好
gstreamer1.0-插件-base
gstreamer1.0-插件-坏
gstreamer1.0-插件-丑陋
gstreamer1.0-rtsp-服务器
gstreamer1.0-omx
gstreamer1.0-libav
gstreamer1.0-dev
GST 验证
GST 示例
使用以下行命令，
gst-launch-1.0 playbin uri=file:///home/root/media/video_test.mp4 video-sink="waylandsink sync=false"
视频和音频工作正常。相反，使用 QML 组件，例如这个
Item {
id: idVideo
visible: true
width: 1024
height: 600
Video {
id: videoExample
anchors.fill: parent
source: "file:///home/root/media/video_test.mp4"
autoPlay: true
focus: true
}
}
或者这个，
Item {
id: idVideo
visible: true
width: 1024
height: 600
MediaPlayer {
id: mdpExample
source: "file:///home/root/media/video_test.mp4"
autoPlay: true
}
VideoOutput {
id: videoExample
anchors.fill: parent
source: mdpExample
}
}
音频可以正常播放，但视频不能正常播放（显示屏为黑色）。我该如何解决这个问题？
如果我启动以下行命令，
gst-inspect-1.0
我有以下答案：
dtmf: dtmfsrc: DTMF tone generator
dtmf: rtpdtmfsrc: RTP DTMF packet generator
dtmf: rtpdtmfdepay: RTP DTMF packet depayloader
monoscope: monoscope: Monoscope
imagefreeze: imagefreeze: Still frame stream generator
goom: goom: GOOM: what a GOOM!
flac: flacenc: FLAC audio encoder
flac: flacdec: FLAC audio decoder
flac: flactag: FLAC tagger
wavparse: wavparse: WAV audio demuxer
avi: avidemux: Avi demuxer
avi: avimux: Avi muxer
avi: avisubtitle: Avi subtitle parser
spectrum: spectrum: Spectrum analyzer
videobox: videobox: Video box filter
soup: souphttpsrc: HTTP client source
soup: souphttpclientsink: HTTP client sink
goom2k1: goom2k1: GOOM: what a GOOM! 2k1 edition
videomixer: videomixer: Video mixer 2
rtsp: rtspsrc: RTSP packet receiver
rtsp: rtpdec: RTP Decoder
rtp: rtpac3depay: RTP AC3 depayloader
rtp: rtpac3pay: RTP AC3 audio payloader
rtp: rtpbvdepay: RTP BroadcomVoice depayloader
rtp: rtpbvpay: RTP BV Payloader
rtp: rtpceltdepay: RTP CELT depayloader
rtp: rtpceltpay: RTP CELT payloader
rtp: rtpdvdepay: RTP DV Depayloader
rtp: rtpdvpay: RTP DV Payloader
rtp: rtpgstdepay: GStreamer depayloader
rtp: rtpgstpay: RTP GStreamer payloader
rtp: rtpilbcpay: RTP iLBC Payloader
rtp: rtpilbcdepay: RTP iLBC depayloader
rtp: rtpg722depay: RTP audio depayloader
rtp: rtpg722pay: RTP audio payloader
rtp: rtpg723depay: RTP G.723 depayloader
rtp: rtpg723pay: RTP G.723 payloader
rtp: rtpg726depay: RTP G.726 depayloader
rtp: rtpg726pay: RTP G.726 payloader
rtp: rtpg729depay: RTP G.729 depayloader
rtp: rtpg729pay: RTP G.729 payloader
rtp: rtpgsmdepay: RTP GSM depayloader
rtp: rtpgsmpay: RTP GSM payloader
rtp: rtpamrdepay: RTP AMR depayloader
rtp: rtpamrpay: RTP AMR payloader
rtp: rtppcmadepay: RTP PCMA depayloader
rtp: rtppcmudepay: RTP PCMU depayloader
rtp: rtppcmupay: RTP PCMU payloader
rtp: rtppcmapay: RTP PCMA payloader
rtp: rtpmpadepay: RTP MPEG audio depayloader
rtp: rtpmpapay: RTP MPEG audio payloader
rtp: rtpmparobustdepay: RTP MPEG audio depayloader
rtp: rtpmpvdepay: RTP MPEG video depayloader
rtp: rtpmpvpay: RTP MPEG2 ES video payloader
rtp: rtpopusdepay: RTP Opus packet depayloader
rtp: rtpopuspay: RTP Opus payloader
rtp: rtph261pay: RTP H261 packet payloader
rtp: rtph261depay: RTP H261 depayloader
rtp: rtph263ppay: RTP H263 payloader
rtp: rtph263pdepay: RTP H263 depayloader
rtp: rtph263depay: RTP H263 depayloader
rtp: rtph263pay: RTP H263 packet payloader
rtp: rtph264depay: RTP H264 depayloader
rtp: rtph264pay: RTP H264 payloader
rtp: rtph265depay: RTP H265 depayloader
rtp: rtph265pay: RTP H265 payloader
rtp: rtpj2kdepay: RTP JPEG 2000 depayloader
rtp: rtpj2kpay: RTP JPEG 2000 payloader
rtp: rtpjpegdepay: RTP JPEG depayloader
rtp: rtpjpegpay: RTP JPEG payloader
rtp: rtpklvdepay: RTP KLV Depayloader
rtp: rtpklvpay: RTP KLV Payloader
rtp: rtpL16pay: RTP audio payloader
rtp: rtpL16depay: RTP audio depayloader
rtp: rtpL24pay: RTP audio payloader
rtp: rtpL24depay: RTP audio depayloader
rtp: asteriskh263: RTP Asterisk H263 depayloader
rtp: rtpmp1sdepay: RTP MPEG1 System Stream depayloader
rtp: rtpmp2tdepay: RTP MPEG Transport Stream depayloader
rtp: rtpmp2tpay: RTP MPEG2 Transport Stream payloader
rtp: rtpmp4vpay: RTP MPEG4 Video payloader
rtp: rtpmp4vdepay: RTP MPEG4 video depayloader
rtp: rtpmp4apay: RTP MPEG4 audio payloader
rtp: rtpmp4adepay: RTP MPEG4 audio depayloader
rtp: rtpmp4gdepay: RTP MPEG4 ES depayloader
rtp: rtpmp4gpay: RTP MPEG4 ES payloader
rtp: rtpqcelpdepay: RTP QCELP depayloader
rtp: rtpqdm2depay: RTP QDM2 depayloader
rtp: rtpsbcdepay: RTP SBC audio depayloader
rtp: rtpsbcpay: RTP packet payloader
rtp: rtpsirenpay: RTP Payloader for Siren Audio
rtp: rtpsirendepay: RTP Siren packet depayloader
rtp: rtpspeexpay: RTP Speex payloader
rtp: rtpspeexdepay: RTP Speex depayloader
rtp: rtpsv3vdepay: RTP SVQ3 depayloader
rtp: rtptheoradepay: RTP Theora depayloader
rtp: rtptheorapay: RTP Theora payloader
rtp: rtpvorbisdepay: RTP Vorbis depayloader
rtp: rtpvorbispay: RTP Vorbis payloader
rtp: rtpvp8depay: RTP VP8 depayloader
rtp: rtpvp8pay: RTP VP8 payloader
rtp: rtpvp9depay: RTP VP9 depayloader
rtp: rtpvp9pay: RTP VP9 payloader
rtp: rtpvrawdepay: RTP Raw Video depayloader
rtp: rtpvrawpay: RTP Raw Video payloader
rtp: rtpstreampay: RTP Stream Payloading
rtp: rtpstreamdepay: RTP Stream Depayloading
rtpmanager: rtpbin: RTP Bin
rtpmanager: rtpjitterbuffer: RTP packet jitter-buffer
rtpmanager: rtpptdemux: RTP Demux
rtpmanager: rtpsession: RTP Session
rtpmanager: rtprtxqueue: RTP Retransmission Queue
rtpmanager: rtprtxreceive: RTP Retransmission receiver
rtpmanager: rtprtxsend: RTP Retransmission Sender
rtpmanager: rtpssrcdemux: RTP SSRC Demux
rtpmanager: rtpmux: RTP muxer
rtpmanager: rtpdtmfmux: RTP muxer
autodetect: autovideosink: Auto video sink
autodetect: autovideosrc: Auto video source
autodetect: autoaudiosink: Auto audio sink
autodetect: autoaudiosrc: Auto audio source
effectv: edgetv: EdgeTV effect
effectv: agingtv: AgingTV effect
effectv: dicetv: DiceTV effect
effectv: warptv: WarpTV effect
effectv: shagadelictv: ShagadelicTV
effectv: vertigotv: VertigoTV effect
effectv: revtv: RevTV effect
effectv: quarktv: QuarkTV effect
effectv: optv: OpTV effect
effectv: radioactv: RadioacTV effect
effectv: streaktv: StreakTV effect
effectv: rippletv: RippleTV effect
debug: breakmydata: Break my data
debug: capssetter: CapsSetter
debug: rndbuffersize: Random buffer size
debug: navseek: Seek based on left-right arrows
debug: pushfilesrc: Push File Source
debug: progressreport: Progress report
debug: taginject: TagInject
debug: testsink: Test plugin
debug: cpureport: CPU report
shout2send: shout2send: Icecast network sink
flxdec: flxdec: FLX video decoder
jpegformat: jpegparse: JPEG stream parser
jpegformat: jifmux: JPEG stream muxer
vpx: vp8dec: On2 VP8 Decoder
vpx: vp8enc: On2 VP8 Encoder
vpx: vp9dec: On2 VP9 Decoder
vpx: vp9enc: On2 VP9 Encoder
pulseaudio: pulsesink: PulseAudio Audio Sink
pulseaudio: pulsesrc: PulseAudio Audio Source
pulseaudio: pulsedeviceprovider (GstDeviceProviderFactory)
udp: udpsink: UDP packet sender
udp: multiudpsink: UDP packet sender
udp: dynudpsink: UDP packet sender
udp: udpsrc: UDP packet receiver
navigationtest: navigationtest: Video navigation test
cacasink: cacasink: A colored ASCII art video sink
ximagesrc: ximagesrc: Ximage video source
smpte: smpte: SMPTE transitions
smpte: smptealpha: SMPTE transitions
auparse: auparse: AU audio demuxer
video4linux2: v4l2src: Video (video4linux2) Source
video4linux2: v4l2sink: Video (video4linux2) Sink
video4linux2: v4l2radio: Radio (video4linux2) Tuner
video4linux2: v4l2deviceprovider (GstDeviceProviderFactory)
audiofx: audiopanorama: Stereo positioning
audiofx: audioinvert: Audio inversion
audiofx: audiokaraoke: AudioKaraoke
audiofx: audioamplify: Audio amplifier
audiofx: audiodynamic: Dynamic range controller
audiofx: audiocheblimit: Low pass & high pass filter
audiofx: audiochebband: Band pass & band reject filter
audiofx: audioiirfilter: Audio IIR filter
audiofx: audiowsinclimit: Low pass & high pass filter
audiofx: audiowsincband: Band pass & band reject filter
audiofx: audiofirfilter: Audio FIR filter
audiofx: audioecho: Audio echo
audiofx: scaletempo: Scaletempo
alpha: alpha: Alpha filter
mulaw: mulawenc: Mu Law audio encoder
mulaw: mulawdec: Mu Law audio decoder
gdkpixbuf: gdkpixbufdec: GdkPixbuf image decoder
gdkpixbuf: gdkpixbufoverlay: GdkPixbuf Overlay
gdkpixbuf: gdkpixbufsink: GdkPixbuf sink
videofilter: gamma: Video gamma correction
videofilter: videobalance: Video balance
videofilter: videoflip: Video flipper
videofilter: videomedian: Median effect
wavenc: wavenc: WAV audio muxer
wavpack: wavpackdec: Wavpack audio decoder
wavpack: wavpackenc: Wavpack audio encoder
multifile: multifilesrc: Multi-File Source
multifile: multifilesink: Multi-File Sink
multifile: splitfilesrc: Split-File Source
multifile: splitmuxsink: Split Muxing Bin
multifile: splitmuxsrc: Split File Demuxing Bin
flv: flvdemux: FLV Demuxer
flv: flvmux: FLV muxer
videocrop: videocrop: Crop
videocrop: aspectratiocrop: aspectratiocrop
matroska: matroskademux: Matroska demuxer
matroska: matroskaparse: Matroska parser
matroska: matroskamux: Matroska muxer
matroska: webmmux: WebM muxer
1394: dv1394src: Firewire (1394) DV video source
1394: hdv1394src: Firewire (1394) HDV video source
cutter: cutter: Audio cutter
oss4: oss4sink: OSS v4 Audio Sink
oss4: oss4src: OSS v4 Audio Source
alphacolor: alphacolor: Alpha color filter
level: level: Level
ossaudio: osssrc: Audio Source (OSS)
ossaudio: osssink: Audio Sink (OSS)
camerabin: viewfinderbin: Viewfinder Bin
camerabin: wrappercamerabinsrc: Wrapper camera src element for camerabin2
camerabin: camerabin: Camera Bin
replaygain: rganalysis: ReplayGain analysis
replaygain: rglimiter: ReplayGain limiter
replaygain: rgvolume: ReplayGain volume
aasink: aasink: ASCII art video sink
apetag: apedemux: APE tag demuxer
shapewipe: shapewipe: Shape Wipe transition filter
alaw: alawenc: A Law audio encoder
alaw: alawdec: A Law audio decoder
interleave: interleave: Audio interleaver
interleave: deinterleave: Audio deinterleaver
audioparsers: aacparse: AAC audio stream parser
audioparsers: amrparse: AMR audio stream parser
audioparsers: ac3parse: AC3 audio stream parser
audioparsers: dcaparse: DTS Coherent Acoustics audio stream parser
audioparsers: flacparse: FLAC audio parser
audioparsers: mpegaudioparse: MPEG1 Audio Parser
audioparsers: sbcparse: SBC audio parser
audioparsers: wavpackparse: Wavpack audio stream parser
deinterlace: deinterlace: Deinterlacer
multipart: multipartdemux: Multipart demuxer
multipart: multipartmux: Multipart muxer
png: pngdec: PNG image decoder
png: pngenc: PNG image encoder
jpeg: jpegenc: JPEG image encoder
jpeg: jpegdec: JPEG image decoder
y4menc: y4menc: YUV4MPEG video encoder
dv: dvdemux: DV system stream demuxer
dv: dvdec: DV video decoder
taglib: id3v2mux: TagLib-based ID3v2 Muxer
taglib: apev2mux: TagLib-based APEv2 Muxer
icydemux: icydemux: ICY tag demuxer
cairo: cairooverlay: Cairo overlay
equalizer: equalizer-nbands: N Band Equalizer
equalizer: equalizer-3bands: 3 Band Equalizer
equalizer: equalizer-10bands: 10 Band Equalizer
id3demux: id3demux: ID3 tag demuxer
jack: jackaudiosrc: Audio Source (Jack)
jack: jackaudiosink: Audio Sink (Jack)
isomp4: qtdemux: QuickTime demuxer
isomp4: rtpxqtdepay: RTP packet depayloader
isomp4: qtmux: QuickTime Muxer
isomp4: mp4mux: MP4 Muxer
isomp4: ismlmux: ISML Muxer
isomp4: 3gppmux: 3GPP Muxer
isomp4: mj2mux: MJ2 Muxer
isomp4: qtmoovrecover: QT Moov Recover
speex: speexenc: Speex audio encoder
speex: speexdec: Speex audio decoder
gio: giostreamsrc: GIO stream source
gio: giostreamsink: GIO stream sink
gio: giosrc: GIO source
gio: giosink: GIO sink
audioconvert: audioconvert: Audio converter
vorbis: vorbistag: VorbisTag
vorbis: vorbisparse: VorbisParse
vorbis: vorbisdec: Vorbis audio decoder
vorbis: vorbisenc: Vorbis audio encoder
volume: volume: Volume
subparse: ssaparse: SSA Subtitle Parser
subparse: subparse: Subtitle parser
subparse: subparse_typefind: srt, sub, mpsub, mdvd, smi, txt, dks
typefindfunctions: audio/audible: aa, aax
typefindfunctions: audio/x-xi: xi
typefindfunctions: video/x-pva: pva
typefindfunctions: application/x-ssa: ssa, ass
typefindfunctions: application/octet-stream: no extensions
typefindfunctions: image/x-degas: no extensions
typefindfunctions: image/x-icon: no extensions
typefindfunctions: application/x-yuv4mpeg: no extensions
typefindfunctions: image/vnd.wap.wbmp: no extensions
typefindfunctions: image/vnd.adobe.photoshop: psd
typefindfunctions: application/msword: doc
typefindfunctions: application/pdf: pdf
typefindfunctions: audio/x-kss: kss
typefindfunctions: video/x-ivf: ivf
typefindfunctions: audio/x-sap: sap
typefindfunctions: audio/x-vgm: vgm
typefindfunctions: audio/x-gbs: gbs
typefindfunctions: audio/x-ay: ay
typefindfunctions: audio/x-gym: gym
typefindfunctions: audio/x-nsf: nsf
typefindfunctions: video/vivo: viv
typefindfunctions: application/x-mmsh: no extensions
typefindfunctions: multipart/x-mixed-replace: no extensions
typefindfunctions: video/x-dirac: no extensions
typefindfunctions: application/x-ms-dos-executable: dll, exe, ocx, sys, scr, msstyles, cpl
typefindfunctions: application/x-ar: a
typefindfunctions: application/x-tar: tar
typefindfunctions: application/x-rar: rar
typefindfunctions: image/svg+xml: svg
typefindfunctions: application/postscript: ps
typefindfunctions: audio/x-caf: caf
typefindfunctions: audio/x-wavpack-correction: wvc
typefindfunctions: audio/x-wavpack: wv, wvp
typefindfunctions: audio/x-spc: spc
typefindfunctions: audio/aac: aac, adts, adif, loas
typefindfunctions: application/x-executable: no extensions
typefindfunctions: text/x-cmml: no extensions
typefindfunctions: application/x-ogg-skeleton: no extensions
typefindfunctions: audio/x-celt: no extensions
typefindfunctions: audio/x-speex: no extensions
typefindfunctions: application/x-ogm-text: no extensions
typefindfunctions: application/x-ogm-audio: no extensions
typefindfunctions: application/x-ogm-video: no extensions
typefindfunctions: video/x-theora: no extensions
typefindfunctions: audio/x-vorbis: no extensions
typefindfunctions: audio/x-flac: flac
typefindfunctions: subtitle/x-kate: no extensions
typefindfunctions: application/x-compress: Z
typefindfunctions: application/zip: zip
typefindfunctions: application/x-gzip: gz
typefindfunctions: application/x-bzip: bz2
typefindfunctions: image/x-sun-raster: ras
typefindfunctions: image/x-xpixmap: xpm
typefindfunctions: image/x-jng: jng
typefindfunctions: video/x-mng: mng
typefindfunctions: image/x-xcf: xcf
typefindfunctions: audio/x-sid: sid
typefindfunctions: audio/x-sbc: sbc
typefindfunctions: audio/iLBC-sh: ilbc
typefindfunctions: audio/x-amr-wb-sh: amr
typefindfunctions: audio/x-amr-nb-sh: amr
typefindfunctions: video/x-dv: dv, dif
typefindfunctions: video/x-mve: mve
typefindfunctions: application/mxf: mxf
typefindfunctions: video/x-matroska: mkv, mka, mk3d, webm
typefindfunctions: image/x-portable-pixmap: pnm, ppm, pgm, pbm
typefindfunctions: image/x-exr: exr
typefindfunctions: image/webp: webp
typefindfunctions: image/tiff: tif, tiff
typefindfunctions: image/bmp: bmp
typefindfunctions: image/png: png
typefindfunctions: image/gif: gif
typefindfunctions: image/jpeg: jpg, jpe, jpeg
typefindfunctions: application/x-ape: ape
typefindfunctions: audio/x-shorten: shn
typefindfunctions: audio/x-rf64: rf64
typefindfunctions: audio/x-w64: w64
typefindfunctions: audio/x-ircam: sf
typefindfunctions: audio/x-sds: sds
typefindfunctions: audio/x-voc: voc
typefindfunctions: audio/x-nist: nist
typefindfunctions: audio/x-paris: paf
typefindfunctions: audio/x-svx: iff, svx
typefindfunctions: audio/x-aiff: aiff, aif, aifc
typefindfunctions: audio/x-wav: wav
typefindfunctions: application/xml: xml
typefindfunctions: application/ttml+xml: ttml+xml
typefindfunctions: application/smil: smil
typefindfunctions: application/sdp: sdp
typefindfunctions: application/x-hls: m3u8
typefindfunctions: text/uri-list: ram
typefindfunctions: text/utf-32: txt
typefindfunctions: text/utf-16: txt
typefindfunctions: text/plain: txt
typefindfunctions: video/x-flv: flv
typefindfunctions: application/vnd.ms-sstr+xml: no extensions
typefindfunctions: application/dash+xml: mpd, MPD
typefindfunctions: application/x-shockwave-flash: swf, swfl
typefindfunctions: application/x-pn-realaudio: ra, ram, rm, rmvb
typefindfunctions: application/vnd.rn-realmedia: ra, ram, rm, rmvb
typefindfunctions: text/html: htm, html
typefindfunctions: video/mj2: mj2
typefindfunctions: image/jp2: jp2
typefindfunctions: image/x-quicktime: qif, qtif, qti
typefindfunctions: video/quicktime: mov, mp4
typefindfunctions: application/x-3gp: 3gp
typefindfunctions: audio/x-m4a: m4a
typefindfunctions: video/x-nuv: nuv
typefindfunctions: video/x-h265: h265, x265, 265
typefindfunctions: video/x-h264: h264, x264, 264
typefindfunctions: video/x-h263: h263, 263
typefindfunctions: video/mpeg4: m4v
typefindfunctions: video/mpeg-elementary: mpv, mpeg, mpg
typefindfunctions: application/ogg: ogg, oga, ogv, ogm, ogx, spx, anx, axa, axv
typefindfunctions: video/mpegts: ts, mts
typefindfunctions: video/mpeg-sys: mpe, mpeg, mpg
typefindfunctions: audio/x-gsm: gsm
typefindfunctions: audio/x-dts: dts
typefindfunctions: audio/x-ac3: ac3, eac3
typefindfunctions: audio/mpeg: mp3, mp2, mp1, mpga
typefindfunctions: audio/x-mod: 669, amf, ams, dbm, digi, dmf, dsm, gdm, far, imf, it, j2b, mdl, med, mod, mt2, mtm, okt, psm, ptm, sam, s3m, stm, stx, ult, umx, xm
typefindfunctions: audio/x-ttafile: tta
typefindfunctions: application/x-apetag: mp3, ape, mpc, wv
typefindfunctions: application/x-id3v1: mp3, mp2, mp1, mpga, ogg, flac, tta
typefindfunctions: application/x-id3v2: mp3, mp2, mp1, mpga, ogg, flac, tta
typefindfunctions: video/x-fli: flc, fli
typefindfunctions: audio/mobile-xmf: mxmf
typefindfunctions: audio/riff-midi: mid, midi
typefindfunctions: audio/midi: mid, midi
typefindfunctions: audio/x-imelody: imy, ime, imelody
typefindfunctions: video/x-vcd: dat
typefindfunctions: video/x-cdxa: dat
typefindfunctions: audio/qcelp: qcp
typefindfunctions: video/x-msvideo: avi
typefindfunctions: audio/x-au: au, snd
typefindfunctions: audio/x-musepack: mpc, mpp, mp+
typefindfunctions: video/x-ms-asf: asf, wm, wma, wmv
theora: theoraparse: Theora video parser
theora: theoraenc: Theora video encoder
theora: theoradec: Theora video decoder
cdparanoia: cdparanoiasrc: CD Audio (cdda) Source, Paranoia IV
videotestsrc: videotestsrc: Video test source
audiotestsrc: audiotestsrc: Audio test source
pango: textrender: Text renderer
pango: clockoverlay: Clock overlay
pango: timeoverlay: Time overlay
pango: textoverlay: Text overlay
playback: uridecodebin: URI Decoder
playback: decodebin: Decoder Bin
playback: streamsynchronizer: Stream Synchronizer
playback: subtitleoverlay: Subtitle Overlay
playback: playsink: Player Sink
playback: playbin: Player Bin 2
audioresample: audioresample: Audio resampler
audiorate: audiorate: Audio rate adjuster
app: appsink: AppSink
app: appsrc: AppSrc
videoscale: videoscale: Video scaler
xvimagesink: xvimagesink: Video sink
ximagesink: ximagesink: Video sink
adder: adder: Adder
ogg: oggaviparse: Ogg AVI parser
ogg: oggparse: Ogg parser
ogg: ogmtextparse: OGM text stream parser
ogg: ogmvideoparse: OGM video stream parser
ogg: ogmaudioparse: OGM audio stream parser
ogg: oggmux: Ogg muxer
ogg: oggdemux: Ogg demuxer
opus: opusdec: Opus audio decoder
opus: opusenc: Opus audio encoder
tcp: multisocketsink: Multi socket sink
tcp: multifdsink: Multi filedescriptor sink
tcp: tcpserversrc: TCP server source
tcp: tcpserversink: TCP server sink
tcp: tcpclientsrc: TCP client source
tcp: tcpclientsink: TCP client sink
tcp: socketsrc: socket source
alsa: alsamidisrc: AlsaMidi Source
alsa: alsasink: Audio sink (ALSA)
alsa: alsasrc: Audio source (ALSA)
videoconvert: videoconvert: Colorspace converter
videorate: videorate: Video rate adjuster
encoding: encodebin: Encoder Bin
coretracers: stats (GstTracerFactory)
coretracers: rusage (GstTracerFactory)
coretracers: log (GstTracerFactory)
coretracers: latency (GstTracerFactory)
clutter-gst3: clutterautovideosink: Clutter Auto Video Sink
coreelements: streamiddemux: Streamid Demux
coreelements: valve: Valve element
coreelements: multiqueue: MultiQueue
coreelements: typefind: TypeFind
coreelements: tee: Tee pipe fitting
coreelements: filesink: File Sink
coreelements: queue2: Queue 2
coreelements: queue: Queue
coreelements: output-selector: Output selector
coreelements: input-selector: Input selector
coreelements: identity: Identity
coreelements: funnel: Funnel pipe fitting
coreelements: filesrc: File Source
coreelements: fdsink: Filedescriptor Sink
coreelements: fdsrc: Filedescriptor Source
coreelements: fakesink: Fake Sink
coreelements: fakesrc: Fake Source
coreelements: downloadbuffer: DownloadBuffer
coreelements: concat: Concat
coreelements: capsfilter: CapsFilter
staticelements: bin: Generic bin
staticelements: pipeline: Pipeline object
关于QTmultimedia版本，我有5.0的。
我发布此内容是因为我仍然无法添加评论。
这个问题你解决了吗？
我在使用 Qt6.4 的 iMX93 平台上运行的 Yocto 上遇到了完全相同的问题
我已经包含了不同的 gstreamer 插件，但出现了同样的情况：音频正常，但显示空白，没有任何警告或错误。 gst-launch-1.0 工作正常，所以这似乎不是插件问题，而是与 Qt 本身有关。
我还尝试在构建 Yocto 时包含以下内容（它对我不起作用，但它可以对您的情况有所帮助）：
IMAGE_INSTALL:append = " qtmultimedia qtmultimedia-plugins qtmultimedia-qmlplugins”
CORE_IMAGE_EXTRA_INSTALL +=“gstreamer1.0-plugins-ugly-meta packagegroup-fsl-gstreamer1.0-commercial” LICENSE_FLAGS_ACCEPTED +=“商业”
PACKAGECONFIG：append_pn-qtmultimedia =“gstreamer gstreamer010”