我正在尝试在 odroid C1+ 上使用 gstreamer。我安装了 gstreamer，base，好，丑，坏，libav 从这里得到 https://gstreamer.freedesktop.org/modules/
跟随这里 http://linuxfromscratch.org/blfs/view/svn/index.html
但是当我这样跑
gst-launch-1.0 -e pulsesrc device="alsa_input.usb-046d_0809_52A63768-02.analog-mono" ! audioconvert ! lamemp3enc target=1 bitrate=64 cbr=true ! filesink location=audio.mp3
我收到错误
WARNING: erroneous pipeline: no element "lamemp3enc"
我应该怎么做？
++
我跑
GST_PLUGIN_PATH=/usr/lib/gstreamer-1.0/ gst-inspect-1.0 lamemp3enc
并得到
Factory Details:
Rank primary (256)
Long-name L.A.M.E. mp3 encoder
Klass Codec/Encoder/Audio
Description High-quality free MP3 encoder
Author Sebastian Dröge <sebastian.droege@collabora.co.uk>
Plugin Details:
Name lame
Description Encode MP3s with LAME
Filename /usr/lib/gstreamer-1.0/libgstlame.so
Version 1.8.1
License LGPL
Source module gst-plugins-ugly
Source release date 2016-04-20
Binary package GStreamer Ugly Plugins 1.8.1 BLFS
Origin URL http://www.linuxfromscratch.org/blfs/view/svn/
GObject
+----GInitiallyUnowned
+----GstObject
+----GstElement
+----GstAudioEncoder
+----GstLameMP3Enc
Implemented Interfaces:
GstPreset
Pad Templates:
SINK template: 'sink'
Availability: Always
Capabilities:
audio/x-raw
format: S16LE
layout: interleaved
rate: { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }
channels: 1
audio/x-raw
format: S16LE
layout: interleaved
rate: { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }
channels: 2
channel-mask: 0x0000000000000003
SRC template: 'src'
Availability: Always
Capabilities:
audio/mpeg
mpegversion: 1
layer: 3
rate: { 8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000 }
channels: [ 1, 2 ]
Element Flags:
no flags set
Element Implementation:
Has change_state() function: gst_audio_encoder_change_state
Element has no clocking capabilities.
Element has no URI handling capabilities.
Pads:
SINK: 'sink'
Pad Template: 'sink'
SRC: 'src'
Pad Template: 'src'
Element Properties:
name : The name of the object
flags: readable, writable
String. Default: "lamemp3enc0"
parent : The parent of the object
flags: readable, writable
Object of type "GstObject"
perfect-timestamp : Favour perfect timestamps over tracking upstream timestamps
flags: readable, writable
Boolean. Default: false
mark-granule : Apply granule semantics to buffer metadata (implies perfect-timestamp)
flags: readable
Boolean. Default: false
hard-resync : Perform clipping and sample flushing upon discontinuity
flags: readable, writable
Boolean. Default: false
tolerance : Consider discontinuity if timestamp jitter/imperfection exceeds tolerance (ns)
flags: readable, writable
Integer64. Range: 0 - 9223372036854775807 Default: 40000000
target : Optimize for quality or bitrate
flags: readable, writable
Enum "GstLameMP3EncTarget" Default: 0, "quality"
(0): quality - Quality
(1): bitrate - Bitrate
bitrate : Bitrate in kbit/sec (Only valid if target is bitrate, for CBR one of 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256 or 320)
flags: readable, writable
Integer. Range: 8 - 320 Default: 128
cbr : Enforce constant bitrate encoding (Only valid if target is bitrate)
flags: readable, writable
Boolean. Default: false
quality : VBR Quality from 0 to 10, 0 being the best (Only valid if target is quality)
flags: readable, writable
Float. Range: 0 - 9.999 Default: 4
encoding-engine-quality: Quality/speed of the encoding engine, this does not affect the bitrate!
flags: readable, writable
Enum "GstLameMP3EncEncodingEngineQuality" Default: 1, "standard"
(0): fast - Fast
(1): standard - Standard
(2): high - High
mono : Enforce mono encoding
flags: readable, writable
Boolean. Default: false
Presets:
"Ubuntu"