Qam

[donbrew]

standard took seconds, IRC took a bit longer with same results, HRC long time no channels, EIA IRC fast same 20 channels, EIA HRC long time no channels.

Here is logs including all 4.

[sub]

What verison Linux are you running?

[donbrew]

19.04 Ubuntu

[donbrew]

I updated to 907. First time I scanned it found 600 + & still running services. I cancelled because that isn't right. Now I get the same 20 non channels, even after purge and reinstall.

I must be doing something crazy wrong!

[sub]

Sorry, I hadn't specifically got around to do working out what your problem might be, so haven't included a fix at this stage.

[mvallevand]

Getting 100's of channels might not be unusual. When I run NextPVR doesn't mark the encrypted channels so I wrote a preprocessing script to limit the NextPVR scan to just clear QAM channels.

Martin

[donbrew]

Thing was 600 + and none were actual channels. I think tvheadend find about 150 services and 29 channels

[sub]

Hmm, they probably are channels, but I'm guessing that most of them are encrypted, so not viewable.

Martin pointed out that it's not currently identifying the encrypted channels on Linux, and this is on my list to investigate. At the end of the scan it's supposed to list all channels, but only the unencrypted ones are supposed to be ticked

[mvallevand]

Run this script (probably 1/2 an hour)

Code:

dvbv5-scan -C CA /usr/share/dvb/atsc/us-Cable-Standard-center-frequencies-QAM256 -o prescan.conf

#zapfile="/var/opt/nextpvr/adapter0-ATSC-channels.conf"
zapfile="prescan.conf"
channel="dummy"
#if [ true == false ]; then
rm probe.json || true
while read channels
    do
        if [ "${channels:0:1}" == "[" ]; then
            channel="${channels:1:-1}"
            echo $channel
        elif [[ "$channels" == *"AUDIO_PID"* ]]; then
            echo $channel >> probe.json
            dvbv5-zap -c $zapfile $channel -r -o dummy.ts -t 2
            ffprobe -v quiet -print_format json -show_format -show_streams dummy.ts >> probe.json
        fi
done <$zapfile
#fi
state=0
array=()
while IFS= read -r channels
    do
        if [ $state == 0 ]; then
            channel=$channels
            state=1
        elif [ "${channels:0:1}" == "}" ]; then
            if [ $state == 2 ]; then
                array+="[$channel]"
            fi
            state=0
        elif [[ "$channels" == *"\"streams\":"* ]]; then
            state=2
        fi
done < probe.json

echo > myqam.conf
flag=0
while IFS= read -r channels
    do
        if [ "${channels:0:1}" == "[" ]; then
            flag=0
            channel="${channels:1:-1}"
            case "${array[@]}" in  *"$channel"*) flag=1 ;; esac
        fi
        if [ $flag == 1 ]; then
            echo "$channels" >> myqam.conf
        fi

done <$zapfile

and then place myqam.conf into /usr/share/dvb/atsc

and choose myqam.conf in NextPVR

Martin

[donbrew]

Update:
I installed Ubuntu 18.04.3 fresh on a different computer. The only thing I installed was SSH.
Ran the .deb installation.
Same results, just the 20 stations on the 57 MHz frequency.