Stuttering on IPTV (2 Viewers)

paalkr

Portal Pro
June 30, 2008
145
20
Home Country
Norway Norway
MediaPortal Version: 1.1.2
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1. TV Card Type: DVB-IP
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MPEG2 Video Codec: Microsoft DTV (Unlocked SAF 5.00 installed)
MPEG2 Audio Codec: ffdshow
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Hi all!

I have trouble with playback of some IPTV channels that seems to broadcast variable FPS rates (is that possible?) :confused: If I Press "!" (Shift + 1) when watching TV the source FPS varies from 17 FPS to about 51 FPS on some channels, especially HD channels but not limited to HD (most other channels sticks to 50 FPS +/- 1). The result is that the timing graph shows that the FPS (provided from windows) and the FPS from the stream is way out of sync, causing stuttering and a lot of skipped frames. I tried to use that automatic refresh rate changer in MP, but that does not help much because of the varying FPS in the stream.

If I playback a recorded TV show the behavior does not change at all, for the channels that are troublesome in live TV

Playback of HD movies (1080p and 720p) ripped from blue-ray with stable 24FPS works like a charm. The same goes for playback of DVDs and other stored movies.

EDIT: Log file attached.
EDIT2: FTA log file attached, to eliminate CAM as the error source.

Regards,
PK
 

paalkr

Portal Pro
June 30, 2008
145
20
Home Country
Norway Norway
Re: Sync trouble with variable FPS

I have attached log files. Hope that helps :)

Regards,
PK
 

paalkr

Portal Pro
June 30, 2008
145
20
Home Country
Norway Norway
Hi all!

The strange thing is that most SD channels plays OK, except Disney Playhouse. A sample stream can be download from here: http://dl.dropbox.com/u/12465334/Disney Playhouse.ts

And when I add this stream to graphstudio it adds the Monogram AAC decoder in front of th ffdshow audio decoder. No other channel does this, can that be the source of trouble. What is so special with Disney Playhouse (except that my son loves the channel).

The freeze when zapping to a HD channel is caused by something else though (the ts stream seems corrupted). Sample from here: http://dl.dropbox.com/u/12465334/NRK1 HD.ts

graphe.png


Regards,
PK
 

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