Bug: Problem when switching from AC3 TV channel to AAC TV channel with FFDSHOW (1 Viewer)

[kiwijunglist]

MediaPortal Version: MP 1.1 Final
MediaPortal Skin: Blue3wide
Windows Version: Win 7 32 bit
CPU Type: AMD X2 4200+
HDD: WD 750G + 1500GB
Memory: 2GB DDR2 800
Motherboard: Gigabyte GA-MA78GM-S2H REV1.0 (780 Chipset)
Video Card: Powercolor HD4670 1024MB
Video Card Driver: ATI CATALYST 10.7
Sound Card: Realtek Onboard Audio
Sound Card AC3: SPDIF
1. TV Card: HVR2200
1. TV Card Type: Hybrid DVB-T & Analog
1. TV Card Driver:HVR-22x0_7_9_1_28162_WHQL
MPEG2 Video Codec: FFDSHOW
MPEG2 Audio Codec: FFDSHOW
h.264 Video Codec: FFDSHOW DXVA (VIDEOS) / PDVD 10 (LIVE TV)
Satelite/CableTV Provider:
TV: Samsung 46" LCD TV 1920x1080
TV - HTPC Connection: HDMI

I've noticed that after viewing an AC3 channel when i try to switch to any other channel (AAC) The video goes black, and the zapping osd doesn't dissapear, sound stops, and MP is unresponsive to trying to change channels, however if I press 'b' -> 'b' then it stops the tv stream and I return to the my live tv menu.

In the following log file
Start Mediaportal
Goto My TV
Start viewing channel TV2 (AAC) - sucessful
Go full screen
Change to channel TV3+1 (AAC) - sucessful
Change to channel TV2 (AAC) - sucessful
Change to channel TV3 (AC3) - sucessful
Attempt to channel TV2 (AAC) - failure, the screen is black and the osd is unresponsive.
Now I press 'b' -> 'b' twice to stop the tv stream
I close mediaportal, and generate the log file below

This is a consistent error, I can reproduce this error 100% off the time, switching between all other channels if fine, the problem only occurs when I switch to a new channel with AAC audio while viewing TV3 (AC3 audio)

Thanks
KiwiJunglist

EDITED THIS POST AS MY INITIAL THOUGHT WAS THAT 1080i was the problem, but the problem seems to related to AC3 -> AAC audio switching.

 

[kiwijunglist]

Re: Bug: No video displayed in live TV after switching from 1080i channel

Problem is with audio switching and ffdshow.
FYI TV2 is 2.0 AAC and TV3 has 2x audio streams (5.1 AC3 & 2.0 AAC)

MPEG/AC3 Audio Decoder = FFDSHOW Audio Decoder (AC3)
LATM AAC Audio Decoder = Monogram AAC Decoder

- I will get a crash when i change from TV3 (5.1 AC3) -> TV2 (Stereo AAC)
- However if I use the F9 button I can switch between AC3 and AAC while TV3 is playing, on the fly, without any problems.

If i use Microsoft DTD-DVD Audio decoder in place of ffdshow I don't get the crash. So I can solve my problem by using MS codec for TV audio instead of ffdshow, however I will still leave this bug report as there still maybe a bug with mediaportal rather than ffdshow.

*** ALSO WHY CAN'T I CHOOSE FFDSHOW AUDIO DECODER FOR AAC IN TV SETUP (I CAN CHOOSE FFDSHOW AUDIO UNDER VIDEO CODECS, JUST NOT TV CODECS) ***

Thanks
Kiwi

 

[tourettes]

Re: Bug: No video displayed in live TV after switching from 1080i channel

*** ALSO WHY CAN'T I CHOOSE FFDSHOW AUDIO DECODER FOR AAC IN TV SETUP (I CAN CHOOSE FFDSHOW AUDIO UNDER VIDEO CODECS, JUST NOT TV CODECS) ***

TsReader doesn't support the NALU type of audio stream that the most of AAC decoders require.