Hi<br><br><div class="gmail_quote">On Thu, Feb 21, 2008 at 3:31 PM, Stuart Auchterlonie <<a href="mailto:stuarta@squashedfrog.net">stuarta@squashedfrog.net</a>> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div class="Ih2E3d">Mark Buechler wrote:<br>
> Hi.<br>
><br>
> On Wed, Feb 20, 2008 at 10:08 PM, MythTV <<a href="mailto:mythtv@cvs.mythtv.org">mythtv@cvs.mythtv.org</a><br>
</div><div class="Ih2E3d">> <mailto:<a href="mailto:mythtv@cvs.mythtv.org">mythtv@cvs.mythtv.org</a>>> wrote:<br>
><br>
> #4606: Broken progress bar in DVB-Radio playback plus stuttering<br>
> -------------------------------------------+--------------------------------<br>
</div>> Reporter: Robin Gilks <<a href="mailto:g8ecj@gilks.org">g8ecj@gilks.org</a> <mailto:<a href="mailto:g8ecj@gilks.org">g8ecj@gilks.org</a>>><br>
<div class="Ih2E3d">> | Owner: ijr<br>
> Type: defect | Status: new<br>
> Priority: blocker | Milestone: 0.21<br>
> Component: mythtv | Version: head<br>
> Severity: medium | Resolution:<br>
> Mlocked: 0 |<br>
> -------------------------------------------+--------------------------------<br>
><br>
</div>> Comment(by <a href="mailto:latepaul@gmail.com">latepaul@gmail.com</a> <mailto:<a href="mailto:latepaul@gmail.com">latepaul@gmail.com</a>>):<br>
<div><div></div><div class="Wj3C7c">><br>
> I'm hitting this problem too. What I've noticed is that if you<br>
> pause the<br>
> playback and then unpause it starts again and 'corrects' the<br>
> stuttering.<br>
><br>
> Also when I first hit this problem I experienced it as the whole<br>
> machine<br>
> hanging. I discovered that it wasn't actually hanging but that the<br>
> mythfrontend was taking all the CPU. It would eventually respond to<br>
> e.g. a<br>
> keypress, but it was taking forever and practically speaking I had to<br>
> reboot.<br>
><br>
> I had real-time priority set up using /etc/security/limit.conf. When I<br>
> disabled this I got the problem as described here - stuttering. I<br>
> also see<br>
> the progress bar as '01 of 01'<br>
><br>
> When listening to DVB Radio view LiveTV I don't get this problem. I can<br>
> play back the underlying recording file with mplayer without<br>
> stuttering.<br>
><br>
> Let me know if you want me to upload any logs etc.<br>
><br>
><br>
> I believe the stuttering is from the stream size difference between<br>
> pre-multirec and trunk. The old way was to create dummy video and record<br>
> it along with the audio. Now the dummy video is being created on-demand<br>
> by the frontend - thus reducing the size of the stream. I believe the<br>
> read size is too large for such a small stream. However, adjusting it<br>
> will affect video streams. This may be where specialized storage groups<br>
> comes in handy - one for DVB audio only.<br>
><br>
<br>
</div></div>No, surely we know when we are processing an audio channel and should<br>
compensate the read buffer requirements to match.<br>
<br>
Specialized storage groups in this situation is pure and utter butchery.<br>
</blockquote><div><br>Stuart, this was in reference to a patch I've submitted which allows for configurable IO characteristics per Storage Group/directory. I also know specialized Storage Groups have been discussed in the past. I was simply thinking "why not combine the two",<br>
<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
<br>
Stuart<br>
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</blockquote></div><br>- Mark.<br>