I have a raw stream on the network which I am capturing a frame every few seconds, storing it as a PNG file, and display it on a web page.
I am using this pipe which works well under linux
C:\gstreamer\1.0\msvc_x86_64\bin\gst-launch-1.0 -v udpsrc port=5002 !
application/x-rtp, media=(string)video, clock-rate=(int)90000,
encoding-name=(string)RAW, sampling=(string)YCbCr-4:2:2,
depth=(string)8, width=(string)320, height=(string)180,
ssrc=(uint)1236, payload=(int)96, clock-base=(uint)4068866987,
seqnum-base=(uint)24582 ! rtpvrawdepay ! queue ! videoconvert !
videorate ! video/x-raw,framerate=1/2 ! pngenc ! multifilesink
location=c:\some_folder\d88039e83991.png
However, this does not work under windows. Under windows, I get the error
(gst-launch-1.0:6300): GStreamer-WARNING **: 15:07:58.874: Failed to
load plugin
'C:\gstreamer\1.0\msvc_x86_64\lib\gstreamer-1.0\gstwavpack.dll': The
specified module could not be found.
But the plugin is in that folder. Any ideas as to what the problem may be?
This is due to the wavpack.dll not being shipped in version 1.20.0. This has been fixed and should be part of the 1.20.1 release. You can view the merged pull request
https://gitlab.freedesktop.org/gstreamer/cerbero/-/merge_requests/812
which shows wavpack:libs being restored for Windows releases.
Related
I'm currently working on Gstreamer and my goal is to take video from camera(coded natively in h264) decode it, then encode in AV1 and send it in udp to another computer on the network.
My pipelines currently are :
Server :
gst-launch-1.0 -v rtspsrc location= rtsp://192.168.33.104:8554/vis.0 latency=1 is-live=TRUE ! decodebin ! autovideoconvert ! x265enc tune=zerolatency bitrate=300 speed-preset=3 ! rtph265pay ! udpsink host=192.168.33.39 port=8123
Client :
gst-launch-1.0 udpsrc address=192.168.33.39 port=8123 ! application/x-rtp,media=video,clock-rate=90000,encoding-name=H265,payload=96 ! rtph265depay ! avdec_h265 ! autovideosink
So with h265 it works but i cannot find how to do it with AV1 because i can't find a rtpav1pay (and depay).
Thanks in advance.
I tried to search for rtpav1pay but found nothing. I tried rtpgstpay(and depay) didn't work. The main goal is to use as little as possible the network without lag so maybe it's not the best solution. If you have any other idea please share it.
There are rtpav1pay and rtpav1depay plugins provided by gst-plugins-rs; they can be built along with GStreamer if you enable the Rust plugins option, but you could also build them separately from their own repo (instructions on the README).
Dear gstreamer community,
I am running gstreamer (1.20.3) on ubuntu 22.04 LTS with decklinkdrivers (12.4)
After building (and playing around with gstreamer, wathing tutorials etc) the following pipeline I am able to decode a high quality HD SRT Stream (udp streaming) and am outputting it to SDI (in 1080i50), works very well.
gst-launch-1.0 -v srtsrc uri=srt://x.x.x.x:xxxx latency=200 ! tsdemux name=demux demux. ! h264parse ! video/x-h264 ! avdec_h264 ! queue ! videoconvert ! video/x-raw,format=UYVY ! decklinkvideosink mode=1080i50 sync=false demux. ! avdec_aac ! queue ! audioconvert ! audio/x-raw, format=S32LE, channels=2 ! decklinkaudiosink
Audio to Videosync is stable to each other for hours (didn't test for days), but after testing the encoder to decoder end to end on my gstreamer pipeline audio comes a little too early (about 60ms early).
I tried to only change buffersize in audiopart of the pipeline to correct the timing on the audiosite e.g.
queue max-size-buffers=0 max-size-time=0 max-size-bytes=0 min-threshold-time=60000000
but audio to video offset didn't change here trying several different min-threshold-times.
for the decklinkaudiosink there is no ts-offset cap to change the timing here and also changing the buffer-time property here didn't change anything.
Can anybody please help me here how to correct the audio timing or audio latency to accurate videodecoding on my pipeline!?
Thanks!
So, I'm starting to play around with gstreamer and I'm able to do very simple pipes such as
gst-launch-1.0 -v v4l2src device=/dev/video1 ! video/x-raw,format=YUY2,width=640,height=480,framerate=10/1 ! videoconvert ! autovideosink
Now, as my USB webcam (which is video1, video0 being the computer's built in camera) supports h264 (I have checked using lsusb), I would like to try to get the h264 feed directly. I understand that this feed is muxed in the mjpeg one, but looking around on the web it seems that gstreamer is able to get it nonetheless.
Since my end goal is to stream it from a Beaglebone, I made an attempt using the solution given to this post (adding a listener from a different terminal):
#sender
gst-launch-1.0 v4l2src device=/dev/video1 ! video/x-264,width=320,height=90,framerate=10/1 ! tcpserversink host=192.168.148.112 port=9999
But this yields the following error :
WARNING: erroneous pipeline: could not link v4l2src0 to tcpserversink0
I also tried something similar to my first command, changing the source from raw to h264 (based on that post , trying the full command given there gives the same error message)
gst-launch-1.0 -v v4l2src device=/dev/video1 ! video/x-h264,width=640,height=480,framerate=10/1 ! h264parse ! avdec_h264 ! autovideosink
But again, this did not work either:
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data flow error.
Additional debug info:
gstbasesrc.c(2948): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
streaming task paused, reason not-negotiated (-4)
Execution ended after 0:00:00.036309961
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...
I admit this is driving me pretty crazy: looking on SO or elsewhere on the web, there seems to be a lot of people who made it work with exactly the same webcam as the one I have (Logitech C920), but I keep running into issues one after the other.
What would be an example of correct pipe to extract the h264 from that webcam?
You definitely need to use a payloader before it hits the wire. For example rtph264pay. Here is an example that cannot test as I don't have your hardware available. I have working udp examples from alternates sources if this doesn't steer you in the right direction.
server
gst-launch v4l2src device=/dev/video1 \
! video/x-264,width=320,height=90,framerate=10/1 \
! x264enc \
! queue \
! rtph264pay, config-interval=3, pt=96, mtu=1500 \
! queue \
! tcpserversink host=127.0.0.1 port=9002
client
gst-launch tcpserversrc host=127.0.0.1 port=9002 \
! application/x-rtp, media=video, clock-rate=90000, encoding-name=H264, payload=96 \
! rtph264depay \
! video/x-h264 \
! queue \
! ffdec_h264 \
! queue \
! xvimagesink
I'm trying to find a way to use VP8 or VP9 compressed video, a part of Googles WebM project with Gstreamer.
Is there a already a module that can handle VP8? If so, can I get some simple example of how to use it in a broadcast/receive over RTP?
So far there is nothing on the Gstreamer official documentation. They have Matroska support but that seems only be for demuxing the container.
Edit
There obviously are ways
Server:
gst-launch-0.10 -v v4l2src ! video/x-raw-yuv,width=640,height=480 ! vp8enc ! rtpvp8pay ! udpsink host=127.0.0.1 port=9001
Client:
gst-launch-0.10 udpsrc port=9001 caps="application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)VP8-DRAFT-IETF-01, payload=(int)96, ssrc=(uint)2990747501, clock-base=(uint)275641083, seqnum-base=(uint)34810" ! rtpvp8depay ! vp8dec ! ffmpegcolorspace ! Autovideosink
But the latency is higher than I expected.
Yes VP8 is already supported..
VP9 is missing de/payloader more to that below (not really - gst 1.8 added support - details at bottom)
They are contained in vpx module.
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-plugin-vpx.html
VP8:
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-vp8enc.html
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-vp8dec.html
check with gst-inspect-1.0 vp8enc if you have it
For RTP you can use webmmux, rtpvp8depay, rtpvp8pay, vp8enc/dec etc..
However, as Burak Arslan stated pay/depayloader for RTP are not ready for now (not even in 1.6.1 I checked)
For the examples - post some pipe with that and we can check it when its not working :)
EDIT
GStreamer 1.8 was released with support for VP9 - new elements rtpvp9pay/rtpvp9depay added
I am trying to use latest gstreamer and x265enc together. I saw that someone have already posted some commits in http://cgit.freedesktop.org/gstreamer/gst-plugins-bad/log/ext/x265/gstx265enc.c
Can anyone please give an example pipeline where it is known to working (gst-launch-1.0 pipeline example will be very helpful)
1)
What is the current status of x265enc plugin for gstreamer ? does it work really ?
Which branch of gstreamer I need to use to build x265enc? I want to build whole gsteamer source code which will be compatible with x265enc plugin.
What are the system requirement for x265enc and how to build it ? Any wiki/basic instructions will be very helpful.
My goal is to broadcast my ip cameras (h264 streams) as h265 stream on vaughnlive.tv
Currently, I am using following pipeline to broadcast in h264 format:
GST_DEBUG=2 gst-launch-1.0 flvmux name=mux streamable=true ! rtmpsink
sync=true location="rtmp://xxxxxxxxxxxx" rtspsrc
location="rtsp://xxxxxxx" caps="application/x-rtp,
media=(string)audio, clock-rate=(int)90000, encoding-name=(string)MPA,
payload=(int)96" ! rtpmpadepay ! mpegaudioparse ! queue ! mad !
audioconvert ! queue ! voaacenc bitrate=128000 ! aacparse !
audio/mpeg,mpegversion=4,stream-format=raw ! mux. rtspsrc
location="rtsp://xxxxxxx"
caps="application/x-rtp,media=(string)video,clock-rate=(int)90000,
encoding-name=(string)H264" ! rtph264depay !
video/x-h264,stream-format=avc,alignment=au,byte-stream=false ! queue
! decodebin ! queue ! videorate ! "video/x-raw,framerate=30/1" ! queue
! x264enc threads=4 speed-preset=ultrafast bitrate=3072 ! mux.
2)
Can anyone please suggest on how should I change this pipeline to broadcast in h265 format using x265enc element?
A little late but, maybe some people will find this question when seeking info about H.265 support in gstreamer nowadays. This is with gstreamer 1.6.1 compiled from source on Ubuntu 15.10 which has packages ready for libx265..
1,
Encoder
There is x265enc which will be enabled when we have library libx265-dev.
The encoder is inside gst-plugins-bad so after doing autogen.sh you should see x265enc enabled.
You may also need h265parse, rtph265pay/depay
Decoder
I see two decoders, dont know which one is working, I guess libde265dec there is also avdec_h265.
mux
For mux for x264 I was using mpegtsmux, but this does not support video/x265, some work has to be done. The matroskamux should be working when using filesink etc..
[16:39] hi, which container is suitable for x265enc, for x264enc I was using mpegtsmux?
[16:54] otopolsky: mpegts would work if you add support for h265 there, not very difficult[16:55] slomo_: so we need to just add the caps compatibility?
[16:55] otopolsky: otherwise, matroskamux supports it. mp4mux/qtmux could get support for it relatively easily too
[16:55] otopolsky: a bit more than that. look at what tsdemux does for h265
[16:56] otopolsky: and check the gst_mpegts_descriptor_from_registration related code in tsmux
[17:00] slomo_: thanks
2,
Questioned flvmux also does not support h265 only h264..
matroskamux cannot be used for streaming, so only way is to patch mpegtsmux or flvmux etc.