<div class="gmail_quote">On Fri, Dec 3, 2010 at 8:45 AM, Jerry Rubinow <span dir="ltr"><<a href="mailto:jerrymr@gmail.com">jerrymr@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<div class="gmail_quote"><div class="im">On Fri, Dec 3, 2010 at 2:28 AM, Raymond Wagner <span dir="ltr"><<a href="mailto:raymond@wagnerrp.com" target="_blank">raymond@wagnerrp.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>On 12/3/2010 00:34, Jerry Rubinow wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
With more investigation, I've found mpeg 480p, 720p and 1080i all play back ok. It is H264 720p which does not. Any ideas what to look into?<br>
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720p60 means these are HDPVR recordings? What bitrate do you have it set to?<br></blockquote><div><br></div></div><div>Yes. The mpeg recordings are all HDHomerun, and the H264 720p60 is from the HDPVR. It's set to whatever the default is - I've never changed it. I'll try changing the bitrate and see what happens. I do observe though that the CPU hovers in the low 30 percent range when playing back. So I don't understand the reason for the pauses, if it's caused by too high a bitrate.</div>
</div></blockquote><div><br></div><div>I lowered the bitrate down to 2000 in the profile and recorded a show, but it still has the same problem.</div><div><br></div><div>To reiterate, 720p H264 recordings from the HDPVR exhibit pauses during playback. The log shows that frames are repeatedy being dropped because the audio is ahead of the video. I have no problem with 720p or 1080i mpeg files from the HDHomeRun. Playback is under mythfrontend compiled on a Window box with ION video. CPU usage during playback is low (around the low 30s percent). Lower than with the mpeg playback.</div>
<div><br></div><div>I tried forcing the NVideo vsync setting off, didn't help. Tried different recording bitrates, as mentioned, didn't help. Playback is configured to use Direct3D / ffmpeg.</div><div><br></div>
<div>Can someone fill in any details about how mpeg decode differs from H264 decode in myth?</div><div><br></div><div>-Jerry </div></div>