Question

使用以下工作正常

gst-launch-0.10 filesrc location=temp.wav ! wavparse ! audioconvert ! alsasink device=hw:0

和

一样

gst-launch-1.0 filesrc location=temp.wav ! wavparse ! audioconvert ! alsasink device=hw:0

当我使用hw：2时，如果播放器正在使用它，则会出现设备忙碌错误，否则会出现内部数据流错误。

如果我启用调试

GST_DEBUG=2

我得到以下

         alsa pcm_hw.c:1693:_snd_pcm_hw_open: alsalib error: Invalid value for card
basetransform gstbasetransform.c:1414:gst_base_transform_setcaps:<audioconvert0> transform could not transform audio/x-raw, format=(string)S16LE, layout=(string)interleaved, channels=(int)2, channel-mask=(bitmask)0x0000000000000003, rate=(int)44100 in anything we support
basetransform gstbasetransform.c:1414:gst_base_transform_setcaps:<audioconvert0> transform could not transform audio/x-raw, format=(string)S16LE, layout=(string)interleaved, channels=(int)2, channel-mask=(bitmask)0x0000000000000003, rate=(int)44100 in anything we support
basetransform gstbasetransform.c:1414:gst_base_transform_setcaps:<audioconvert0> transform could not transform audio/x-raw, format=(string)S16LE, layout=(string)interleaved, channels=(int)2, channel-mask=(bitmask)0x0000000000000003, rate=(int)44100 in anything we support
basetransform gstbasetransform.c:1414:gst_base_transform_setcaps:<audioconvert0> transform could not transform audio/x-raw, format=(string)S16LE, layout=(string)interleaved, channels=(int)2, channel-mask=(bitmask)0x0000000000000003, rate=(int)44100 in anything we support
     wavparse gstwavparse.c:2249:gst_wavparse_loop:<wavparse0> error: Internal data flow error.
     wavparse gstwavparse.c:2249:gst_wavparse_loop:<wavparse0> error: streaming task paused, reason not-negotiated (-4)
basetransform gstbasetransform.c:1414:gst_base_transform_setcaps:<audioconvert0> transform could not transform audio/x-raw, format=(string)S16LE, layout=(string)interleaved, channels=(int)2, channel-mask=(bitmask)0x0000000000000003, rate=(int)44100 in anything we support
ERROR: from element /GstPipeline:pipeline0/GstWavParse:wavparse0: Internal data flow error.

我从以下两个中获得声音

gst123 -a alsa=hw:2 temp.wav
aplay -D hw:2 temp.wav

我是否遗漏了gst-launch的其他参数？

非常感谢任何帮助！

Answer 1

在写下问题时，我找到了答案，但我想我会继续发布问题以防其他人遇到同样的问题。确实有一个缺失的论点...... audioresample。

gst-launch-1.0 filesrc location=temp.wav ! wavparse ! audioconvert ! audioresample ! alsasink device=hw:2

gst-launch赢得了alsasink device = hw：2

1 个答案: