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| Can't seem to set ivtv enc_xxx_buffers http://forums.linhes.org/viewtopic.php?f=6&t=18058 |
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| Author: | jmacmythtv [ Sun Mar 16, 2008 9:08 am ] |
| Post subject: | Can't seem to set ivtv enc_xxx_buffers |
Hi everyone, Can anyone provide guidance as to how to set the ivtv buffer sizes? I used to put them in /etc/modprobe.d/options. This doesn't seem to do it anymore. I have also tried adding the lines to /etc/mythtv/modules/ivtvX An example line that I am using: options ivtv enc_mpg_buffers=16 The error message in syslog that I am having to prompt this is: ar 16 06:47:22 myvcr kernel: ivtv0: All encoder VBI stream buffers are full. Dropping data. Mar 16 06:47:22 myvcr kernel: ivtv0: Cause: the application is not reading fast enough. Mar 16 06:47:22 myvcr kernel: ivtv0: All encoder MPG stream buffers are full. Dropping data. Mar 16 06:47:22 myvcr kernel: ivtv0: Cause: the application is not reading fast enough. I am using modinfo ivtv to see the settings: parm: dec_vbi_buffers:Decoder VBI buffers (in kB) Default: 64 (int) parm: dec_yuv_buffers:Decoder YUV buffers (in MB) Default: 1 (int) parm: dec_mpg_buffers:Decoder MPG buffers (in MB) Default: 1 (int) parm: enc_pcm_buffers:Encoder PCM buffers (in kB) Default: 320 (int) parm: enc_vbi_buffers:Encoder VBI Buffers (in MB) Default: 1 (int) parm: enc_yuv_buffers:Encoder YUV Buffers (in MB) Default: 2 (int) parm: enc_mpg_buffers:Encoder MPG Buffers (in MB) Default: 4 (int) Although I don't think that it is relevant, I have also enabled the set_ivtv_params script to run at startup and set the temporal filter to 8 on my two pvr250 cards. thanks! |
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| Author: | craigtv [ Mon Mar 17, 2008 1:48 pm ] |
| Post subject: | |
Assuming you're using R5F27 increase buffers for ivtv by adding a line to /etc/mythtv/modules/ivtv Here's what I used ... Code: #following line added to increase buffers
options ivtv enc_yuv_buffers=8 enc_mpg_buffers=32 enc_vbi_buffers=8 enc_pcm_buffers=8 I put it just before the line that says "install ivtv..." Note that the format of the options is a little different as well. |
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| Author: | jmacmythtv [ Mon Mar 31, 2008 7:16 pm ] |
| Post subject: | |
Thanks -changed this a while ago and shutdown recently for a couple of hours while I added a disk...but Still no luck with this. I put the identical line as you in /etc/mythtv/modules/ivtv Is there a script somewhere that might be overwriting these values on boot? and Yes I am using R527 - sorry to omit that. tks! |
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