pūwetewaehere ataata
Ripanga Ihirangi
Kei te hiahia maatau he hua me te SDI me te PAL hei whakaurunga me te awa Ethernet hei putanga, me H.265 wetemuna.
1. Ka tautoko a Vcan1681 i te SDI me te PAL.
https://ivcan.com/p/hdmi-to-ip-encoder-modulator-module-board-cvbs-hdmi/
2. E rua a matou mārō hei tautoko i te H265 me te H264 encoder me te pūwetewaehere.
Ka tautokohia e to kaiwhakawaehere ataata HD-SDI? 1080p ranei 1080i.
1. Ka tautoko a Max i te 1080P.
2. Ko te whakauru HDMI e tautoko ana i te 4k.
Ka taea e to encoder he hototahi ki tetahi h264/h265 pūwetewaehere i.e. Nvidia jetson pūwetewaehere etc
Me patai atu ki te miihini, tena koa korero mai ki a matou nga korero mo te kaiwhakawaehere ataata mena kei a koe.
Kei a matou ano he kaiwhakawaehere ataata me te papa wetewaehere, ki te mea ko korua ko maua, kare he raruraru.
Mo te ataata 4k, 1080p ranei he aha te reeti raraunga ethernet?
Ko te tere moka ataata ka taea e te kaihoko te whirihora (kaiwhakamahi).
Ka whakamahi matou i to papa whakaata ataata me nga whakaurunga e rua (HDMI me te PAL) me te kai 12V. Kei te pai?
Ko te tikanga he whakauru HDMI, AV ranei (tautoko e rua momo ataata), ka hiahia ranei koe ki te HDMI me te AV hei tautoko i nga whakaurunga e rua?
Q: Me whai HDMI me AV hei tautoko i nga whakaurunga e rua.
He: pai. Ka mahia e to maatau miihini miihini etahi ra ki te hanga i tetahi miihini hou hei whakatutuki i tenei mahi e hiahia ana koe. Ka whakapai ake ahau ka whakaatu ki a koe te ataata whakamatautau. https://youtu.be/izdFa1nw7u8
iVcan: Tena koa awhina mai ki te whakaū ka taea te tautoko a HDMI me cvbs i te wa kotahi, engari ka taea anake te kowhiri i te oro mai i tetahi o nga mea e rua (ka kowhiria e te punaha te ororongo ororongo / ororongo rite ki te ahuatanga uru ataata), he pai ki a koe?
Kiritaki: Kaore matou e hiahia ororongo, na, mahia te mea pai mo koe.
iVcan: Kua hangaia e to maatau miihini rorohiko he rorohiko mo koe. Tena koa tirohia nga pikitia kei roto i nga taapiri.
Inaianei kei te tautoko te kamera HDMI me te kamera CVBS.
Kiritaki:
He maha nga wa i whakamatauria e au to encoder me to maatau punaha. Kei te pai te mahi katoa.
Engari he take nui kei a matou hei whakamana i tana whakamahinga :
I nga wa katoa ka huri tatou i te punaha Camera me te encoder i te wa ano kaore e taea e taatau te panui “awa matua”, ka taea e tatou anake te panui i te “awa iti”.
Me mahi tatou “Whakahou ano” te encoder mā te atanga tukutuku kia mahi ai: i muri i te whakaara ano ka taea e taatau te panui tika i te MainStream.
I whakamatau matou me VLC me GStreamer.
He aha ta maatau e ngana kia panui nga awa e rua i te tiimatanga ?
iVcan:
Ki te whakaaro o a maatau miihini, he raruraru ki te mohiotanga kamera, he raru ranei mo te whakamahi a te kaihoko.
Ki taku whakaaro kaore te kaari poari i mohio ki te kamera HDMI a te kaihoko.
He ngawari tenei ki te manatoko (ki te kore e taea e koe te uru atu ki te awa iti, ka uaua ki te manatoko).
Takiuru ki te tūmau tukutuku o te poari encoder ka kite koe i te mana āhukahuka kāmera i te whārangi ataata.
iVcan:
Ko te wharangi ataata ka whakaatu noa i te mana mohio o te kamera kotahi. Mena ka hono nga kamera HDMI me te AV me te mohio i te wa kotahi, ka whakaatuhia e te wharangi ataata te mana mohiotanga o te kamera HDMI (penei 1080p60):
I te mea ka taea e te kamera HDMI te mohio ki te tikanga, Ka taea te uru atu ki te auraki.
Mena kaore i te mohiohia te kamera HDMI, tena koa tirohia nga waea HDMI me te hiko i runga i te papa (kia mahara he huringa hiko tenei, ehara i te rorohiko ka timata ano i te wharangi paetukutuku)
Hei taapiri, whakamahi te poari i te wāhitau Mac matapōkeretia, no reira ka huri te wahitau Mac i nga wa katoa ka timata ano tatou.
Mo nga taputapu whai keteroki ARP (penei i te PC), i muri i te whakaara ano, he rangitahi (he hēkona ruarua) kaore e taea te uru ki te poari mai i te whatunga. , Kaore e taea e matou te uru atu kia timata ano te tono arp i muri i te wa mutunga (Ko te mahi kaore e taea te pinged te papa tohu mo etahi hēkona i muri i te whakaara ano)
Na reira, Ki taku whakaaro ko tetahi atu pea ka uru atu te kaihoko ki te auraki, e kore e taea te uru atu na runga i nga take o runga ake nei. Na ka uru te kaihoko ki te awa iti, ka whakahou te keteroki arp ka taea e te kaihoko te uru atu, engari kaore te kaihoko e hoki ki te awa-matua.
“I nga wa katoa ka huri tatou i te kamera punaha me te encoder i te wa ano, e kore e taea e tatou te panui i te "Mainstream", ka taea noa e tatou te panui i te "substream".“
iVcan:
Ma te whakatau i to korero i konei, te ahua nei kua timata to kamera i muri i to maatau papa whakawaehere. Me timata to kamera i te tuatahi, katahi ka whakakaha ka tiimata i ta maatau papa whakawaehere ki te whakamatau. Akene karekau e whakakahahia i te wa ano. He mea nui ano te ota whakakaha. Hei tauira, e hiahia ana to whakaoho kamera 10 hēkona, engari ko ta maatau papa encoder board e hiahia ana anake 5 hēkona.
Na te mea kaore au i te tino mohio mena he puhoi to kaamera ki te arawhiti i muri i te hiko.
Na te mea he tere te tiimata o ta maatau papa encoder, tera pea kaore ano te kaamera i arawhiti i muri i tana tiimata i to maatau papa encoder, tera pea ka puta etahi raruraru ohorere. Ka taea hoki e tenei te whakamarama he aha "Me "Whakahou" te encoder ma te atanga tukutuku kia pai ai te mahi: i muri i te whakaara ano ka taea e taatau te panui tika i te awa matua.", na te mea ka whakaara ano to whaarangi paetukutuku i te papa encoder, kua arawhitia te kamera.
Na reira, ko nga whakaaro whakamutunga e whai ake nei (I whakapau kaha ahau ki te whakararangi i nga mea katoa i puta ki to hinengaro ka waiho maau e whakamatautau motuhake);
Tirohia te wharangi ataata o te tūmau tukutuku me te whakaū mena kei te mohiohia te kamera HDMI (ka taea e koe te tuku whakaahua ki a matou). I te wa e mohiohia ana te kamera, Ka taea te uru atu ki te kaupapa matua;
E taunaki ana kia ping koe i te papa tohu ki raro i te cmd i te tuatahi, katahi ka uru atu ki te awa matua me te awa iti i raro i te vlc kia kore ai e pohehe te whakaaro kaore e taea te uru atu te Mainstream na nga take mac matapōkere.
Kia timata koe i to kamera i te tuatahi (mo etahi hēkona), katahi ka whakakaha ka timata i ta maatau papa whakawaehere ki te whakamatau (tirohia nga take i whakaahuatia i runga ake nei)
Whaia to mahi taketake o te "whakahurihia te kamera punaha me te encoder i te wa kotahi". I te raruraru "kaore e taea e matou te panui i te "Maamaa", Ka taea e taatau anake te panui i te "substream"." ka whakaputahia, Kaua e timata ano te papa whakawaehere ma te wharangi paetukutuku, engari whakawerahia te taura HDMI i waenga i to kamera me te poari whakawaehere. Ki taku whakaaro he mahi whakawhiti wera anake (na te mea e whakapae ana ahau he raru rapunga mono e kore ai te kamera e hono ki te papa whakawaehere. Tukua te tohu HDMI).
Kiritaki:
Ka taea e au te panui i te awa iti. Ko te awa matua anake i muri i te whakaara ano.
iVcan:
Na ka kitea e to maatau papa encoder to kamera.
Tena koa mahia he whakamatautau.
Kia timata koe i to kamera i te tuatahi (mo etahi hēkona), katahi ka whakakaha ka timata i ta maatau papa whakawaehere ki te whakamatau.
Kei te awangawanga te miihini mo te mea e hiahiatia ana e to whakaoho kamera 10 hēkona, engari ko ta maatau papa encoder board e hiahia ana anake 5 hēkona.
Tena koa mahia tenei whakamatautau hei whakakore i nga wa rereke rereke.
iVcan:
I a koe e whakamatautau ana, he pai ake te whakatika i te tautuhinga ki muri (kupu whero) tirohia ranei te pikitia i raro nei.
Kiritaki:
Ko te papa encoder me te kaamera ka whakahikohia i te wa kotahi. Ko te ahua ka roa ake te tiimata o te kamera i te papa encoder.
Ka whakapumautia e au ko te kamera kaore i te mohiotia i te tiimatanga “CVBS hoa” ka whakaatuhia ki runga.
Ka taea e au te ping te papa pai i mua i te ngana ki te panui i nga awa e rua
Ina timata ahau i taku kamera i te tuatahi (mo etahi hēkona), katahi ka whakakaha (15 hekona i muri mai) ka timata i te papa whakawaehere, Ka taea e au te panui i te awa pai noa.
Mena ko ahau “whakakāhia te kāmera pūnaha me te encoder i te wa kotahi”. Na ka wera wera te HDMI (15 hekona i muri mai), Ka taea e au te panui i te awa pai noa.
He aha ka taea e au te panui i te awa matua me te kore e mahi i enei mea ? Tukua he tono http whakaara ano me taku rorohiko, he hēkona i muri i te whakaoho ?
iVcan:
Kaati, e whakaatu tika ana taku whakaaro. Mo etahi atu o taatau kaihoko, ko te kaamera me to maatau papa whakawaehere kua whakahiko katoa i te wa kotahi. Ka taea e nga kamera te mohio ki ta maatau poari whakawaehere me te tuku tohu HDMI. He ruarua noa nga kaihoko kua pa ki enei raru ma te whakamahi i o raatau kamera HDMI. Ko nga mea e whai ake nei ka whakatauhia e nga kaihoko ake (te whakarereke i o raatau tautuhinga kamera / whakarereke i nga kamera).
Kiritaki:
Kei a koe te putanga o te rorohiko i whakawhanakehia e koe mo matou? Ka whakatauhia e matou i roto i ta maatau PO.
iVcan: Ko te putanga firmware he v6.5.5a mo to taputapu.
Kei a matou he hapa o te encoder ataata, me aha ahau?
1. Mai i te whakaahua i whakaatuhia e koe, kitea e matou i pakaru te pūnga iahiko me te inductor i te kokonga maui o raro na te kaha o waho. Akene i paopaohia i te wa o te takai me te kawe, a, na to kamupene i turaki i a raatau i te wa e mahi ana.
Ko nga mea kua tohua ko nga taputapu ngaro, ko enei:
1、C176：KAUPAPA,10NF,+/-10%,X7R,1000V,SMD1206
2、C21：KAUPAPA,22UF,+/-20%,X5R,6.3V,SMD0603
3、R34：FB,120R@100M,+/-25%,3He,SMD0603 (he pirepire aukume)
Ngana koa ki te rapu i nga waahanga ano, whakakapihia, ka ata tirohia mena kei te ngaro etahi atu waahanga.
Mena kei a koe tonu nga patai, tēnā whakapā mai.
Kiritaki:
ka whakamahia tenei waahanga hapa hei whakahaere i te ara iahiko?
iVcan:
1.5supply mana V, whakakaha DDR， tirohia koa te pikitia i raro nei.
Kiritaki:
I whakakapihia e matou nga waahanga i runga i to tohutohu, kaore te encoder e mahi.
Hei taapiri, i kite matou i etahi atu raru o te kounga me nga weld, he maha nga mahi a-ringa.
Me pehea e taea ai e matou te haere ki te whakawhitinga paerewa i raro i te raihana?
iVcan:
Kaua e manukanuka, tena koa whakahokia mai ki a matou, a ka hurihia e matou he mea hou mo koe.
Does your HDMI + CVBS video encoder board support ONVIF?
The engineer said that the ONVIF protocol is not fully supported. It depends on your specific requirements.
The video player supports RTSP, VLC, Easyplay, and protocol support UDP player.
Can I use hdmi stream and CVBS stream together?
Our video encoding board supports two channels of video at the same time, one is HDMI video stream and CVBS video stream encoding.
pātai: He aha te ahuatanga o to DVB-T modulator (tuku) whai? Ka taea e tatou te kite i nga mea i raro nei mena ka titiro tatou ki te paerewa DVB-T ETSI EN 300 744.
Engari he aha nga wa kei roto i to waahanga DVB-T TX?
Kei te hiahia matou na te mea kei te whakaaro matou ki te tere-rereke i te wa e rere ana te ataata, no reira me mohio tatou ki nga wa tuturu mo tenei ahuatanga. Ka whakamahia e matou te QPSK, CR=1/2, GI=1/32, hōkaiipurangi = 8 MHz.
Whakautu: I roto i to tatou DVB-T modulator, he rite tonu te wa tohu tuku me te wa tiaki, ki 400 744 whakaritenga
kaitahuri cvbs ki IP, kaitahuri tohu av ki ethernet, SDI CVBS encoder,
Q: How much will be the latency if I connect two cameras (atanga + CVBS)?
I have two cameras, one is a hdmi camera, and the second is a CVBS camera. I will convert both video streams to IP ethernet by this board and the opposite receiver side will be a computer.
He:
The delay of the video encoding board must take into account the encoding and decoding. It is impossible to test the accurate delay from the encoding board alone.
Ko te tikanga, the delay caused by the decoder board is greater.
With different software players, the latency varies greatly. Hei tauira, using our Splayer the delay is about 100ms, and using VLC the delay can be up to 300ms.
The delay of the CVBS camera is difficult to measure accurately. Delays below 100ms are difficult to measure with a stopwatch. Hei taapiri, the delay of Vcan1681 itself is not easy to test. Without the decoder board, you can’t even see the image. It cannot be calculated by using a stopwatch, and there is no way to measure it with an oscilloscope.
After the customer buys the encoding board, he will definitely need a player to decode. Then it is better to ask the customer what kind of player he plans to use for decoding (ours, the customer’s own, or a third party), so that we can know better whether the coding board can meet customer requirements (function and performance) kaore ranei.
How to test the video encoder board latency?
- I pointed the camera at the stopwatch on my computer screen.
- Another computer plays the video sent from the current encoding board and also displays the stopwatch on the computer screen.
- You need to reduce two times, namely the delay from the camera to the monitor. (Including camera and screen delay)
- Please check the below pictures
Q: How much is the latency if I use your encoder and decoder board?
He: It is better to use our encoder and decoder board. The encoder and decoder board prices is the same. The below latency test result is only for your reference, not including the camera delay.
- CVBS input to our encoder board—–our decoder board with HDMI output, the delay is 60~90ms
- HDMI input to our encoder board—–our decoder board with HDMI output, the delay is 90~130ms
- HDMI 720P input our encoder board——–our decoder board with HDMI output, the delay between 80~100ms
- HDMI 1080P input our encoder board——–our decoder board with HDMI output, the delay between 100~130ms
For lower latency, you also can use our video encoder and video decoder board. It will be much better than playing the video streaming on your computer via the VLC player.
