Le jeudi 11 mars 2021 à 12:10 +0800, strong a écrit :
> hi, all
> I want to use gstreamer/libav to encode$decode with g726, the command line
> I used is
> encode:
> gst-launch-1.0 alsasrc device=hw:0 ! audio/x-raw, rate=8000, channels=1, format=S16LE, layout=interleaved ! avenc_g726 code_size=5 ! filesink location=test.g726
> it can work well, I can use ffplay to decode test.g726
>
> decode:
> gst-launch-1.0 filesrc location=test.g726 blocksize=100 ! audio/x-adpcm,
> bitrate=40000, rate=8000, channels=1, layout=g726 ! avdec_g726 ! filesink
> location=test.pcm
>
> location=test.pcm
Took me a bit of research, but found this:
0:00:00.343734425 725274 0x55c94b173000 DEBUG audiodecoder gstaudiodecoder.c:2396:gst_audio_decoder_sink_eventfunc:<avdec_g726-0> unsupported format; ignoring
Didn't search further, but the decoder refuses byte segments and fails everything. You can hack/workaround that with filesrc do-timestamp=TRUE.
gst-launch-1.0 filesrc do-timestamp=TRUE location=test.g726 blocksize=100 ! audio/x-adpcm,bitrate=40000, rate=8000, channels=1, layout=g726 ! avdec_g726 ! filesink location=test.pcm
Would be nice to open an issue in gst-ffmepg about that.
Nicolas
>
> some issues are found
>
> Setting pipeline to PAUSED ...
> Pipeline is PREROLLING ...
> ERROR: from element /GstPipeline:pipeline0/GstFileSrc:filesrc0: Internal data
> stream error.
> Additional debug info:
> ../subprojects/gstreamer/libs/gst/base/gstbasesrc.c(3127): gst_base_src_loop
> (): /GstPipeline:pipeline0/GstFileSrc:filesrc0:
> streaming stopped, reason error (-5)
> ERROR: pipeline doesn't want to preroll.
> Setting pipeline to NULL ...
> Freeing pipeline ...
>
> It seems that filesrc plugin can not parse g726 raw data, do anybody give me
> some suggestion to fix the issue?
>
> Thanks
> _______________________________________________
> gstreamer-devel mailing list
>
[hidden email]
>
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
Locked
