<div dir="ltr"><font color="#000066" face="tahoma, sans-serif">Hi</font><div><font color="#000066" face="tahoma, sans-serif">We had the same problem, and we solved it by creating cbr ts files stuffed with NULL packets. </font></div>
<div><font color="#000066" face="tahoma, sans-serif">The following thread shows the ffmpeg command parameters to create h.264 cbr files:</font></div><div><a href="http://stackoverflow.com/questions/7125446/encoding-h-264-cbr-videos-with-ffmpeg" target="_blank">http://stackoverflow.com/questions/7125446/encoding-h-264-cbr-videos-with-ffmpeg</a> </div>
<div><br></div><div><span style="color:rgb(0,0,102);font-family:tahoma,sans-serif">Mojtaba Nouri</span>
</div><div><span style="color:rgb(0,0,102);font-family:tahoma,sans-serif">Soroush HighTech Ltd.</span></div><div><br></div><div><div class="gmail_quote">On Tue, Sep 11, 2012 at 9:41 PM, Warren Young <span dir="ltr"><<a href="mailto:warren@etr-usa.com" target="_blank">warren@etr-usa.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 9/10/2012 5:51 PM, Warren Young wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
If you take<br>
a guess at the GOP length, you can infer frame rate.<br>
</blockquote>
<br></div>
I meant bit rate, obviously.<br>
<br>
We've tried to get a CBR stream out of ffmpeg, just to prove to ourselves that stream variability is the problem. We haven't succeeded. Apparently ffmpeg is incapable of CBR with H.264, even when you set min = avg = max.<br>
<br>
That said, those settings did greatly reduce the variability. Here's the new stream:<br>
<br>
<a href="http://etr-usa.com/live555/h264-test-cbr.ts" target="_blank">http://etr-usa.com/live555/<u></u>h264-test-cbr.ts</a><br>
<br>
It shows the same stuttery playback with the stock build of the RTSP server. The bit rate range is now 5-10 Mbit/s over the majority of the play time, averaging 7.5 Mbit/s. (It was 2-16 Mbit/s!)<br>
<br>
We'll try to get a less variable file out of other encoders next.<div><div><br>
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</div></div></blockquote></div><br></div></div>