How do we test the new Transcoding support?

Martin Ayla · 2013-05-14T18:05:49+00:00

Hi I just upgraded to the latest unstable release and would like to try the transcoding support. I have tried the john-tornblom branch and it works fine wi...

Geoff Geoff

Guido h wrote:
> i can say with ubuntu 12, it works out of the box. just with the packages https://github.com/john-tornblom/tvheadend. >
> first:
> make a backup from your .tvheadend config dir. (copy)
>
> if u install from some repo, u maybe dont have the testing version with transcoding support.
>
> second:
>
> else git clone to another folder. like
> [...]
>
> change in src/plumbing/transcode.c -> enable_transcode to 1 and
> [...]
>
> run tvheadend with your config backup
> run
> [...]
> to your backup path
>

> u can try it with http://IP:9961/tv.html

Thank you for this advice. I'm using - HTS Tvheadend 3.5.243~g2b64995~precise so I would that have it built in? - sorry a bit of a newbie. or would I still need John branch installed into the system.

I've noticed that the TVHclient for IOS has beta transcoding built in? - how I understand it this is a feature and still needs the above to be done?

Anonymous

No, u dont need johns branchs.

just the ubunut packages:


$ sudo apt-get install build-essential pkg-config libssl-dev 

If you want avahi support (optional):

$ sudo apt-get install libavahi-client-dev

If you plan on doing transcoding (also optional):

$ sudo apt-get install libavcodec-dev libavfilter-dev libavformat-dev libavutil-dev libswscale-dev

You might also like to install the extra codecs pack (incl. H264 encoder):

$ sudo apt-get install libavcodec-extra-53

Geoff Geoff

your good :) Have you tried the app?

Anonymous

yes, i used this: http://john-tornblom.github.io/TVHGuide/news.html

neil mac

@Guido - does my log look like it trying to run the transcoding but then...

webui: Stop streaming /stream/channelid/237?transcode=1&mux=matroska&acodec=AAC&vcodec=H264&scodec=NONE&resolution=384&bandwidth=0&language=, muxer reported errors

Any ideas?

Anonymous

u try SD channels or HD channels ?

neil mac

All SD channels I have tried get the error above, HD work but no sound, which I assume is the aac error.

Any thoughts?

Alex .

neil mac wrote:
> @Guido - does my log look like it trying to run the transcoding but then...
>
> webui: Stop streaming /stream/channelid/237?transcode=1&mux=matroska&acodec=AAC&vcodec=H264&scodec=NONE&resolution=384&bandwidth=0&language=, muxer reported errors
>

> Any ideas?

Hi Neil,

Did you test using the android client or using the webinterface?

If you only tried the androidclient you first might want to try using the browser with an URL like the following:

( so without the bandwidth parameter) to see if it works:

http://192.168.0.30:9981/stream/channelid/4?mux=matroska&acodec=MPEG2AUDIO&vcodec=H264&scodec=NONE&transcode=1&resolution=384

neil mac

Hi Alex.

I was using this - http://IP:9981/tv.html

As above - the SD channels errors out, and the HD channels don't have sound.

Thanks.
Neil

Alex .

Ok, I did not know this would automatically use transcoding.

Did you try a URL like the one below?
(i .e. :

http://192.168.0.30:9981/stream/channelid/4?mux=matroska&acodec=MPEG2AUDIO&vcodec=H264&scodec=NONE&transcode=1&resolution=384

)
You can then easily try different codecs ( and I do not know if this is possible using the tv.html address)

neil mac

Seems to work when using the VLC client, just not the tv.html client.

Cheers,
Neil

Alex .

Ok, wel , that is something. It means transcoding works, and you should be able to change resolution etc.

I also cant seem to be able to use the tv.html client ( didnt know it existed actually).

Alex.

Geoff Geoff

> u can try it with http://IP:9961/tv.html

Hi, done all the above. - thanks so far.

However I understand what I've done. I've changed the file done /.configure and make with /root/tvheadend_transcode. the config is in root/tvheadend_transcode/backup/tvheadend with the various directories - accesscontrol autorec capmt channels channeltags config cwc dvbadapters dvbmuxes dvbsatconf dvbtransports dvr epgdb.v2 epggrab imagecache superuser timeshift tvhtime

How do I run tvheadend to use this version /root/tvheadend_transcode and my config?

Also the other tvheadedend is still running as I can still can access http://192.168.10.38:9981/extjs.html and has all my config in.

Sorry if all sounds basic and is probably my linux knowledge lacking rather than tvheadend - any help would be greatly received.

Alex .

Hi Geoff,

This all depends a bit on your system (what linux version are you using?) and the way you installed the original tvheadend version ( using some package manager like apt, or from source?), but usually there should be a file called tvheadend in /etc/init.d:

You can stop this version by running

/etc/init.d/tvheadend stop

(and restart using
/etc/init.d/tvheadend start

later)

Now, you can run the binary file in /root/tvheadend_transcode as the user that usually runs tvheadend. In that way you will use your regular settings etc.

However, it is not advisable to run tvheadend as root;

Your regular tvheadend version will also probably not run as root, but as some other user, for example a user called 'tvheadend'(, but again, this depends on your system.). Use the same user to run your new tvheadend version.

Alex.

Geoff Geoff

thanks - /home/geoff/tvheadend_transcode/build.linux/tvheadend. (transcoding version) How do I get it to look at my config files from original version? - I think my original config files with all channels are in /home/hts/.hts/tvheadend$ (i think)

Thank you again for helping with this.

Alex .

I guess usually TVheadend is run as a user 'hts'.

So by now running as user 'hts' the same configfile and .hts directory will be used.

NB: Also, you can copy the initfile in /etc/init.d do 'tvheadendtranscode' , and then edit the file to point to the new version of tvheadend.
You can then stop '/etc/init.d/tvheadend', and start '/etc/init.d/tvheadendtranscode'

(using

/etc/init.d/tvheadend stop

/etc/init.d/tvheadendtranscode start

)

Geoff Geoff

Hi Alex, many thanks for your help I feel I'm getting somewhere and understand the program. Everything works ok thanks however when access a channel with DD5.1 it comes up with

Sep 01 22:27:47.556 [ ERROR] libav: Unable to set encoding parameters

Sep 01 22:27:47.556 [ ERROR] transcode: Unable to open libvo_aacenc encoder

any suggestions on this?

Geoff Geoff

apart from the above question... I have to say the transcoding is working perfectly, using the latest TVHclient app. trancoding automatically on the iphone and ipad is brilliant. thanks guys for all your help.

Barry Reid

Hi Guys

I have compiled from source and enabled transcoding in the web interface, but when I try play it in VLC I get the following :

Sep 04 09:25:34.171 [ INFO] transcode: 1:MPEG2VIDEO 720x576 ==> H264 480x384
Sep 04 09:25:34.171 [ INFO] transcode: 2:MPEG2AUDIO ==> Passthrough
Sep 04 09:25:34.172 [ INFO] subscription: "HTTP" subscribing on "7 Digital", weight: 100, adapter: "TurboSight TBS 62x0 DVBT/T2 frontend 0", network: "Seven Network", mux: "Seven Network: 177,500 kHz", provider: "Seven Network", service: "7 Digital", quality: 100
Sep 04 09:25:34.858 [ NOTICE] libav: using SAR=64/45
Sep 04 09:25:34.865 [ NOTICE] libav: using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.1 Cache64
Sep 04 09:25:34.868 [ NOTICE] libav: profile Constrained Baseline, level 2.1
Sep 04 09:25:34.868 [ NOTICE] libav: 264 - core 120 r2151 a3f4407 - H.264/MPEG-4 AVC codec - Copyleft 2003-2011 - http://www.videolan.org/x264.html - options: cabac=0 ref=3 deblock=1:0:0 analyse=0x1:0x111 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=25 keyint_min=2 scenecut=40 intra_refresh=0 rc_lookahead=25 rc=abr mbtree=1 bitrate=368 ratetol=1.0 qcomp=0.60 qpmin=10 qpmax=30 qpstep=4 vbv_maxrate=3670 vbv_bufsize=1835 nal_hrd=none ip_ratio=1.41 aq=1:1.00
Sep 04 09:25:42.291 [ ERROR] mkv: Live stream: Write failed -- Broken pipe
Sep 04 09:25:42.292 [WARNING] webui: Stop streaming /stream/channelid/1?mux=matroska&acodec=MPEG2AUDIO&vcodec=H264&scodec=NONE&transcode=1&resolution=384, muxer reported errors
Sep 04 09:25:42.292 [ INFO] subscription: "HTTP" unsubscribing from "7 Digital"
Sep 04 09:25:42.306 [ NOTICE] libav: frame I:7 Avg QP:23.14 size: 27808
Sep 04 09:25:42.306 [ NOTICE] libav: frame P:144 Avg QP:24.57 size: 2977
Sep 04 09:25:42.306 [ NOTICE] libav: mb I I16..4: 16.9% 0.0% 83.1%
Sep 04 09:25:42.306 [ NOTICE] libav: mb P I16..4: 0.2% 0.0% 0.4% P16..4: 26.1% 8.4% 4.0% 0.0% 0.0% skip:60.9%
Sep 04 09:25:42.306 [ NOTICE] libav: final ratefactor: -30.69
Sep 04 09:25:42.306 [ NOTICE] libav: coded y,uvDC,uvAC intra: 77.6% 86.8% 64.5% inter: 14.6% 17.2% 7.6%
Sep 04 09:25:42.306 [ NOTICE] libav: i16 v,h,dc,p: 60% 12% 6% 21%
Sep 04 09:25:42.306 [ NOTICE] libav: i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 37% 17% 8% 5% 6% 10% 5% 7% 4%
Sep 04 09:25:42.306 [ NOTICE] libav: i8c dc,h,v,p: 37% 25% 31% 7%
Sep 04 09:25:42.306 [ NOTICE] libav: ref P L0: 85.5% 8.9% 5.6%

Sep 04 09:25:42.306 [ NOTICE] libav: kb/s:0.23

And the stream never starts. If I use that same URL in the browser it starts to download the file but shows no errors till I cancel the download.

Any ideas what I am doing wrong?

Barry Reid

I found out the problem.

For some reason my VLC on Ubuntu 13.04 will NOT play the stream. Any other VLC I try plays the stream just fine!

Barry

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