how much bytes is the overhead?
does the recieving ZMQ block has to get the bytes in
chunks of 188 bytes?
i recieve the udp ts stream in varies packet sizes...
and send the straight to the ZMQ framework.
does a 188 byte packitizer exist in gnuradio, so he
can do this job?
or isn't this the reason for the sunc errors?
i somethimes get a few frames visible... so it has to
be related to timings...
Van: "Ron Economos"
<address@hidden>
Aan: "discuss-gnuradio"
<address@hidden>
Verzonden: Woensdag 26 april 2017 21:21:39
Onderwerp: Re: [Discuss-gnuradio] WARN:
transport stream sync error
You may want to put a file sink block after your ZMQ
block to make sure you're chain is working as expected.
Usually 188 byte alignment is just done by picking a UDP
packet size that's a multiple of 188 bytes (plus
overhead). For example, VLC in UDP mode uses 1358 byte
packets and puts 7 TS packets in each UDP packet. Like
so:
Ron
Are you saying that there are no sync bytes in
my stream?
or should i wait until i get byte 0x47 in my
udp packet, wait till i get 188 bytes, and send
them as an array of bytes in the zeroMQ?
Van: "Ron Economos"
<address@hidden>
Aan: "discuss-gnuradio"
<address@hidden>
Verzonden: Woensdag 26 april 2017 20:16:10
Onderwerp: Re: [Discuss-gnuradio] WARN:
transport stream sync error
The BBheader block expects the Transport Stream
to start with a sync byte (0x47) and that a sync
byte appears every 188 bytes.
There's no sync byte synchronization in the
BBheader block, so if the stream doesn't start
with a sync byte, you'll get continuous errors.
Ron
Hi,
My setup:
Linux gnuradio with dvb-s2 tx sample
code. adjusted to read from ZeroMQ pull
source
5M symbol. in 8psk dvb-s2 3/4 code rate
Windows side: 2 programs:
1) program to make udpts stream from
webcam(5M) -> send udp stream to
127.0.0.1:1234
2) program to listen to udp port 1234 get
udp packets and send them to ZeroMQ push
socket
gnuradio is complaining about transport
stream sync error.
What can be the reason for this?
_______________________________________________
Discuss-gnuradio mailing list
address@hidden
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
_______________________________________________
Discuss-gnuradio mailing list
address@hidden
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio