H265 UDP streaming problem

[Marc Leeman]

Indeed, H.265 and H.264 (and MPEG4pt2) should be very similar.

gst-launch-1.0 videotestsrc ! x265enc ! rtph265pay config-interval=1 !
rtpsink uri=rtp://239.1.2.3:1234
st-launch-1.0 rtpsrc uri=rtp://239.1.2.3:1234?encoding-name=H265 !
rtph265depay ! h265parse ! avdec_h265 ! videoconvert ! xvimagesink

gst-launch-1.0 videotestsrc ! x264enc ! rtph264pay config-interval=1 !
rtpsink uri=rtp://239.1.2.3:1234
gst-launch-1.0 rtpsrc uri=rtp://239.1.2.3:1234?encoding-name=H264 !
rtph264depay ! h264parse ! avdec_h264 ! videoconvert ! xvimagesink

Both work, though the default GOP size seems rather large. It seems
that the H264 parser only starts passing data at @I-Frame, while the
H265 parser passes data before the I-Frame (started with green image,
that got cleared up once the I-Frame was there, with H264, there was
no video before the I-Frame).


On Fri, 22 Jan 2021 at 15:15, Michiel Konstapel <michiel at aanmelder.nl> wrote:
>
> And/or on a h265parse element behind the encoder. In fact, you'll probably need both Nicolas' and Nick's suggestions: the receiver needs both a key frame and the information the config-interval inserts into the stream (SPS and PPS) to start decoding.
>
> I don't know why it would work with h264; I'd expect the same issue.
>
> Kind regards,
> Michiel
>
> On 18-01-2021 08:33, Marc Leeman wrote:
>
> use config-interfal with the payloader.
>
>
> On Thu, 14 Jan 2021 at 14:00, mp <tevzpoberznik at gmail.com> wrote:
>
> Hello!
>
> I have a problem with streaming H.265 video on UDP as it works only when the
> receiver starts listening BEFORE the sender starts streaming. It is the same
> for MPEG-TS and RTP protocol. With H.264 there is no such problem.
>
> Exemplary sender pipeline:
> gst-launch-1.0 v4l2src device=/dev/video0 ! decodebin ! videoconvert !
> "video/x-raw, format=(string)I420" ! x265enc name=encoder  ! 'video/x-h265,
> stream-format=(string)byte-stream, alignment=(string)au' ! rtph265pay
> mtu=1400 ! udpsink host=127.0.0.1 port=1234
>
> Exemplary receiver pipeline:
> gst-launch-1.0 -v udpsrc port=1234 do-timestamp=true !
> application/x-rtp,encoding-name=H265,payload=96 ! rtph265depay ! h265parse !
> queue ! avdec_h265 ! xvimagesink
>
> Does anyone have any idea how to solve this problem?
>
> Thanks, best regards,
> Matevz
>
>
>
>
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-- 
g. Marc