Mailing List Archive

On Thu, Apr 30, 2020 at 7:40 PM mythtv <mythtv@mdabbs.org> wrote:
>
> https://www.mythtv.org/wiki/IPTV_Encoders_as_a_Capture_Device
>
> I was wondering if this page is up to date? I'm switching providers and
> may end up losing my component outputs. I have 2 HD-PVRs that have been
> great over the years, but it would be nice if I could switch to digital.
> Also, I noticed the device only supports stereo. Is that still accurate,
> or is digital pass-through available anywhere?

I won't comment on the scripts on that page, but I will say you will
be hard-pressed to find a capture device that supports digital audio
nowadays. The HDPVR-2 was the last device I know of which supported
it, and that product came out almost ten years ago. Everything made
since then supports a single stereo pair.

In principle you might be able to get some subset of uncompressed
capture devices to do it. I've had some success with Blackmagic
cards, and there is an SDK for the MageWell which claims to support it
if you parse the AES stream yourself. In any case it's the sort of
thing someone would have to write a bunch of code to support.

Devin

--
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com
_______________________________________________
mythtv-users mailing list
mythtv-users@mythtv.org
http://lists.mythtv.org/mailman/listinfo/mythtv-users
http://wiki.mythtv.org/Mailing_List_etiquette
MythTV Forums: https://forum.mythtv.org

On Thu, Apr 30, 2020 at 5:42 PM mythtv <mythtv@mdabbs.org> wrote:

> https://www.mythtv.org/wiki/IPTV_Encoders_as_a_Capture_Device
>
> I was wondering if this page is up to date? I'm switching providers and
> may end up losing my component outputs. I have 2 HD-PVRs that have been
> great over the years, but it would be nice if I could switch to digital.
> Also, I noticed the device only supports stereo. Is that still accurate,
> or is digital pass-through available anywhere?
>
> Any help would be greatly appreciated. Feel free to email me directly.
>

Personally, if I want to use an IP encoder, I use mythexternrecorder (
https://www.mythtv.org/wiki/ExternalRecorder#Using_the_.22Generic.22_External_Recorder
). Then just set up the config file to use a command like `curl --silent
http://your-ip-encoder/path` as the command to process the transport stream.

If you wanted to migrate to the HD-PVR2 or Colossus2, you would need to use
an ExternalRecorder for that as well ( https://github.com/jpoet/HauppaugeUSB
). Those do support AC3 5.1, but not dynamically -- you must tell it to
expect PCM (e.g. AAC) or AC3 for the audio and if the stream changes, you
will get bad results. The IP based encoders are the most seamless
solution, but only support 2-channel (e.g. AAC) audio.

John

On 5/1/20 3:15 PM, John P Poet wrote:
> On Thu, Apr 30, 2020 at 5:42 PM mythtv <mythtv@mdabbs.org
> <mailto:mythtv@mdabbs.org>> wrote:
>
> https://www.mythtv.org/wiki/IPTV_Encoders_as_a_Capture_Device
>
> I was wondering if this page is up to date? I'm switching providers and
> may end up losing my component outputs. I have 2 HD-PVRs that have been
> great over the years, but it would be nice if I could switch to digital.
> Also, I noticed the device only supports stereo. Is that still accurate,
> or is digital pass-through available anywhere?
>
> Any help would be greatly appreciated. Feel free to email me directly.
>
>
> Personally, if I want to use an IP encoder, I use mythexternrecorder (
> https://www.mythtv.org/wiki/ExternalRecorder#Using_the_.22Generic.22_External_Recorder
> ).  Then just set up the config file to use a command like `curl
> --silent http://your-ip-encoder/path` as the command to process the
> transport stream.
>
> If you wanted to migrate to the HD-PVR2 or Colossus2, you would need to
> use an ExternalRecorder for that as well (
> https://github.com/jpoet/HauppaugeUSB ). Those do support AC3 5.1, but
> not dynamically -- you must tell it to expect PCM (e.g. AAC) or AC3 for
> the audio and if the stream changes, you will get bad results.  The IP
> based encoders are the most seamless solution, but only support
> 2-channel (e.g. AAC) audio.
>
> John
>
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users@mythtv.org
> http://lists.mythtv.org/mailman/listinfo/mythtv-users
> http://wiki.mythtv.org/Mailing_List_etiquette
> MythTV Forums: https://forum.mythtv.org
>
Thanks for the replies. I'm thinking of the HD-PVR2. For those with
experience, how often does the audio stream change? I could maybe see
commercials or something changing it? Is it something that could be
scripted on a per-channel basis, so for HBO or something with no
commercials, I could set it one way, and for other channels another way?

Also, I saw the forum thread about HD-PVR2 maybe not being rock solid
for live-tv. Is that still an issue?
_______________________________________________
mythtv-users mailing list
mythtv-users@mythtv.org
http://lists.mythtv.org/mailman/listinfo/mythtv-users
http://wiki.mythtv.org/Mailing_List_etiquette
MythTV Forums: https://forum.mythtv.org