“Internal data stream error.” when using omxh264enc

[Homan Maps]

Hey,

I have asked this question before on Stackoverflow, but I think it might
be better targeted to ask it here.

I am currently trying to convert a live feed from a Raspberry Pi camera
to H264 and store it as a mp4 video using gstreamer. Since I am using a
Raspberry Pi 1, I need to use the hardware accelerated video encoding as
otherwise the encoder cannot keep up.

I tried the following pipeline, which I feed manually with RGB image data:

|appsrc name=src format=time is-live=true
caps=video/x-raw,format=(string)RGB,width=640,height=480,bpp=24,depth=24,framerate=20/1
! autovideoconvert ! queue ! omxh264enc ! mp4mux ! filesink
location=output.mp4 |

However, it fails with the following output:

|0:00:01.193743067 2469 0x1f5b320 WARN autoconvert
gstautoconvert.c:1048:gst_auto_convert_sink_query:<autoconvertchild> Got
query allocation while no element was selected, letting through
0:00:01.205271623 2469 0x1f5b2c0 WARN omxvideoenc
gstomxvideoenc.c:2944:gst_omx_video_enc_propose_allocation:<omxh264enc-omxh264enc0>
allocation query does not contain caps 0:00:02.109098855 2469 0x1f5b320
WARN v4l2bufferpool
gstv4l2bufferpool.c:1189:gst_v4l2_buffer_pool_dqbuf:<v4l2convert0:pool:src>
Driver should never set v4l2_buffer.field to ANY 0:00:02.172643411 2469
0xa2703200 WARN GST_PADS
gstpad.c:4226:gst_pad_peer_query:<omxh264enc-omxh264enc0:src> could not
send sticky events 0:00:02.193615605 2469 0xa2703200 WARN omxvideoenc
gstomxvideoenc.c:1602:gst_omx_video_enc_loop:<omxh264enc-omxh264enc0>
error: Internal data stream error. 0:00:02.197108471 2469 0xa2703200
WARN omxvideoenc
gstomxvideoenc.c:1602:gst_omx_video_enc_loop:<omxh264enc-omxh264enc0>
error: stream stopped, reason not-negotiated 0:00:02.329828367 2469
0x1f7eaa0 WARN bufferpool
gstbufferpool.c:1394:gst_buffer_pool_set_flushing:<v4l2convert0:pool:sink>
can't change flushing state of inactive pool 0:00:02.333992206 2469
0x1f7eaa0 WARN bufferpool
gstbufferpool.c:1394:gst_buffer_pool_set_flushing:<v4l2convert0:pool:sink>
can't change flushing state of inactive pool |

Curiously, if I replace |omxh264enc| with the non-accelerated version
|x264enc|, it works (although it falls behind after a couple of frames).

I assume that the warnings right before |Internal data stream error|
might give some indication to what is actually going wrong, but I cannot
make much sense out of them.

The full code can be found here: https://pastebin.com/pgr940yu, as well
as the full debug output of that code here: https://pastebin.com/CLwAfxMG.

Thanks a lot in advance!

Best, Homan

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/gstreamer-devel/attachments/20201106/5668136e/attachment.htm>