<div>I mean, I used "muxing.c" to generate the OGG file.That means both audio and video stream should have the same length,isnt it ?</div><div><br><br> </div><div class="gmail_quote">On Thu, Apr 12, 2012 at 3:31 PM, Gagandeep Bawa <span dir="ltr"><<a href="mailto:gagandeep.bawa@ironroad.com">gagandeep.bawa@ironroad.com</a>></span> wrote:<br>
<blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid" class="gmail_quote"><font color="#000066">You have to check your video frame rate. I worked on IPhone recorded videos files and it varies between 15 to 30. </font><div class="HOEnZb">
<div class="h5"><br><br><div class="gmail_quote">On Thu, Apr 12, 2012 at 11:58 AM, ashika umanga <span dir="ltr"><<a href="mailto:umanga.forums@gmail.com" target="_blank">umanga.forums@gmail.com</a>></span> wrote:<br>
<blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid" class="gmail_quote"><div>When I encode an OGG file with Theora+Speex , my video length is longer than the audio playback.</div>
<div>Anytips on this ?</div>
<div><div></div><div><div> </div><div class="gmail_quote">On Thu, Apr 12, 2012 at 2:51 PM, Gagandeep Bawa <span dir="ltr"><<a href="mailto:gagandeep.bawa@ironroad.com" target="_blank">gagandeep.bawa@ironroad.com</a>></span> wrote:<br>
<blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid" class="gmail_quote"><font color="#000066">Hi,</font><div><font color="#000066"><br>
</font></div><div><font color="#000066">These PTS and DTS used for sync between audio and video data while encoding and presentation. Check below link for more details.</font></div>
<div><font color="#000066"><br></font></div><div><font color="#000066"><b><a href="http://dranger.com/ffmpeg/tutorial05.html" target="_blank">http://dranger.com/ffmpeg/tutorial05.html</a></b></font></div>
<div><br></div><div><font color="#000066">Thanks,</font></div><div><font color="#000066">Gagan</font><br><br><div class="gmail_quote"><div><div>On Thu, Apr 12, 2012 at 11:14 AM, ashika umanga <span dir="ltr"><<a href="mailto:umanga.forums@gmail.com" target="_blank">umanga.forums@gmail.com</a>></span> wrote:<br>
</div></div><blockquote style="margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-color:rgb(204,204,204);border-left-width:1px;border-left-style:solid" class="gmail_quote"><div><div><p>Greetings all,</p><p>
I am writing a wrapper class for video/audio encoding by following the "muxing.c".<br>
<a href="http://ffmpeg.org/doxygen/trunk/muxing_8c-source.html" target="_blank">http://ffmpeg.org/doxygen/trunk/muxing_8c-source.html</a></p>
<p>I see in the example that before writing frames to the file ,is checks whether the PTS value of audiostream is <br>lesser than that of videostream.</p><p>code snippet:</p><p> if (!video_st || (video_st && audio_st && audio_pts < video_pts)) {<br>
write_audio_frame(oc, audio_st);<br> } else {<br> write_video_frame(oc, video_st);<br> picture->pts++;<br> }</p><p>Can someone explain why this test is done? Whats the connection between PTS values ?</p>
<p> </p>
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