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| Jittery TV playback and distorted optical sound (ALSA) http://forum.linhes.org/viewtopic.php?f=2&t=10122 |
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| Author: | cr2 [ Sat May 20, 2006 9:28 am ] |
| Post subject: | Jittery TV playback and distorted optical sound (ALSA) |
I have a problem where live TV playback is extermely jittery especially when watching e.g. sports. I have checked my settings with hdparm: Code: /dev/hda: multcount = 16 (on) IO_support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 1 (on) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) geometry = 24321/255/63, sectors = 200049647616, start = 0 and the CPU load is very low at the moment (max 5%) while recording. I have a Technotrend DVB-C card. Having recently done a fresh install of Knoppmyth R5C7 (I previously played around with R5B7), I found out that I cannot get spdif working properly. It worked fine with R5B7 but now with R5C7 the output is extermely distorted. I get the following output when playing using mplayer: Code: Checking audio filter chain for 44100Hz/2ch/16bit -> 44100Hz/2ch/16bit...
AF_pre: af format: 2 bps, 2 ch, 44100 hz, little endian signed int AF_pre: 44100Hz 2ch Signed 16-bit (Little-Endian) alsa-init: soundcard set to hw:0,1 alsa-init: format Signed 16-bit (Little-Endian) are not supported by hardware, trying default alsa-init: unable to set format: Invalid argument alsa: 48000 Hz/2 channels/4 bpf/32768 bytes buffer/Signed 16 bit Little Endian AO: [alsa] 48000Hz 2ch Signed 16-bit (Little-Endian) (2 bps) Building audio filter chain for 44100Hz/2ch/16bit -> 48000Hz/2ch/16bit... Not sure quite to intepret the above but seems like something is not quite right? |
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