braice / MuMuDVB

A DVB IPTV streaming software
http://mumudvb.braice.net/
GNU General Public License v2.0
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Descrambling stops when audio track is removed from broadcast #251

Open fgt67 opened 5 years ago

fgt67 commented 5 years ago

I've been having an issue with MumuDVB not descrambling the channel after one of the audio tracks is removed from the broadcast stream. Many channels have dynamic audio tracks (Example: Track 1 , Track 2 <Secondary Language/Narrator/Auxiliary>) where Track 2 is disabled on some programming. Once the change occurs the MPEG-TS will remain encrypted until Track 2 is enabled again in the stream or a manual channel zap. MumuDVB reports no errors or warnings and OSCam only reports this in its log.

2019/07/14 15:18:39 48BD88A5 c (ecm) anonymous (098C@000000/00F5/008B/9F:4429566A302C88550147882ACD859810): found 2019/07/14 15:18:39 48BD88A5 c (ecm) anonymous (098C@000000/01AB/008C/9F:30DBD936411A47EA7577C01BAB3AE562): found 2019/07/14 15:18:46 48BD88A5 c (ecm) anonymous (098C@000000/00F5/008B/9F:B7C449EAAA4955DE2C775CD6496F80B5): found 2019/07/14 15:18:46 48BD88A5 c (ecm) anonymous (098C@000000/01AB/008C/9F:AFB0E26465344A9AC882D73AFA0E0AA8): found 2019/07/14 15:18:49 48BD88A5 c (dvbapi) Demuxer 1 continue decoding of SRVID 008B 2019/07/14 15:18:49 48BD88A5 c (dvbapi) Demuxer 1 found 3 ECMpids and 2 STREAMpids in caPMT 2019/07/14 15:18:53 48BD88A5 c (ecm) anonymous (098C@000000/00F5/008B/9F:81F3D4C4B578D61D17F4B31DDD8CAD46): found 2019/07/14 15:18:53 48BD88A5 c (ecm) anonymous (098C@000000/01AB/008C/9F:18CA45E7CF0F6DA774CB1A7E84F94579): found 2019/07/14 15:19:00 48BD88A5 c (ecm) anonymous (098C@000000/00F5/008B/9F:3FF2E96FCC12FE0CE1C4D1285AB91888): found

My config file for MumuDVB:

freq=11758.50 pol=h srate=27500 delivery_system=DVBS2 card=0 dvr_thread=1 scam_support=1 multicast_ipv4=0 unicast=1 port_http=100 autoconfiguration=full autoconf_sid_list=139

I have extracted part of the MPEG-TS where this track change occurs to help illustrate the problem. At 0:08 the stream will become encrypted and available audio tracks will change from 2 to 1. VLC is the only media player I've found that will play and show this correctly.

audiotrackchange.zip

braice commented 5 years ago

Hello

It looks like an issue on the client side that does not see the new stream. As you said it is fixed by a manual zap, meaning the new descrambled flux is sent (as MuMuDVB have no information about zaps).

VLC have a code that is more tolerant to bad streams, so it might be that oscam sends something weird during the transition or that the MuMuDVB rewrites are messing up a bit.

I would try to disable the PMT/SDT rewrite and see if it changes anything.

Brice

On Sun, Aug 4, 2019 at 2:58 AM fgt67 notifications@github.com wrote:

I've been having an issue with MumuDVB not descrambling the channel after one of the audio tracks is removed from the broadcast stream. Many channels have dynamic audio tracks (Example: Track 1 , Track 2 <Secondary Language/Narrator/Auxiliary>) where Track 2 is disabled on some programming. Once the change occurs the MPEG-TS will remain encrypted until Track 2 is enabled again in the stream or a manual channel zap. MumuDVB reports no errors or warnings and OSCam only reports this in its log.

2019/07/14 15:18:39 48BD88A5 c (ecm) anonymous (098C@000000/00F5/008B/9F:4429566A302C88550147882ACD859810): found 2019/07/14 15:18:39 48BD88A5 c (ecm) anonymous (098C@000000/01AB/008C/9F:30DBD936411A47EA7577C01BAB3AE562): found 2019/07/14 15:18:46 48BD88A5 c (ecm) anonymous (098C@000000/00F5/008B/9F:B7C449EAAA4955DE2C775CD6496F80B5): found 2019/07/14 15:18:46 48BD88A5 c (ecm) anonymous (098C@000000/01AB/008C/9F:AFB0E26465344A9AC882D73AFA0E0AA8): found 2019/07/14 15:18:49 48BD88A5 c (dvbapi) Demuxer 1 continue decoding of SRVID 008B 2019/07/14 15:18:49 48BD88A5 c (dvbapi) Demuxer 1 found 3 ECMpids and 2 STREAMpids in caPMT 2019/07/14 15:18:53 48BD88A5 c (ecm) anonymous (098C@000000/00F5/008B/9F:81F3D4C4B578D61D17F4B31DDD8CAD46): found 2019/07/14 15:18:53 48BD88A5 c (ecm) anonymous (098C@000000/01AB/008C/9F:18CA45E7CF0F6DA774CB1A7E84F94579): found 2019/07/14 15:19:00 48BD88A5 c (ecm) anonymous (098C@000000/00F5/008B/9F:3FF2E96FCC12FE0CE1C4D1285AB91888): found

My config file for MumuDVB:

freq=11758.50 pol=h srate=27500 delivery_system=DVBS2 card=0 dvr_thread=1 scam_support=1 multicast_ipv4=0 unicast=1 port_http=100 autoconfiguration=full autoconf_sid_list=139

I have extracted part of the MPEG-TS where this track change occurs to help illustrate the problem. At 0:08 the stream will become encrypted and available audio tracks will change from 2 to 1. VLC is the only media player I've found that will play and show this correctly.

audiotrackchange.zip https://github.com/braice/MuMuDVB/files/3464605/audiotrackchange.zip

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fgt67 commented 5 years ago

Hi,

Is there any specific command I need to put into the channel config? I've tried rewrite_sdt=0 and rewrite_pat=0 but neither made a difference. Will autoconfiguration=full override these and default them to 1?

braice commented 3 years ago

Cleaning old issues

it does override but the arguments are processed in order

On Fri, Aug 9, 2019 at 6:40 PM fgt67 notifications@github.com wrote:

Hi,

Is there any specific command I need to put into the channel config? I've tried rewrite_sdt=0 and rewrite_pat=0 but neither made a difference. Will autoconfiguration=full override these and default them to 1?

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