<div dir="ltr">As BugMaster stated, fps/timestamps in the encoder are just used for precise ratecontrol purposes, and in case of VFR, timestamps override FPS. To be able to get the frames with correct timestamps at decoding time, you must have correct, VFR-aware muxing to some container.</div><div class="gmail_extra"><br><div class="gmail_quote">2017-01-13 7:48 GMT+01:00 YIRAN LI <span dir="ltr"><<a href="mailto:mrfun.china@gmail.com" target="_blank">mrfun.china@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_extra"><br><div class="gmail_quote"><span class="">2017-01-13 17:33 GMT+11:00 Daniel Tisch <span dir="ltr"><<a href="mailto:tisch.daniel@gmail.com" target="_blank">tisch.daniel@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>You need to use "<div class="gmail_default" style="font-family:georgia,serif;display:inline"></div>b_vfr_input", "i_timebase_num" and "<div class="gmail_default" style="font-family:georgia,serif;display:inline"></div>i_timebase_den" in x264_param_t when you setup the encoder, and use "i_pts" in x264_picture_t correctly for the set timebase with each frame you push to the encoder.</div></div><div class="gmail_extra"><br></div></blockquote></span><div><div class="gmail_default" style="font-family:georgia,serif">Hi Daniel,</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif">in x264_encoder_open->x264_<wbr>validate_parameters() I can see</div><br></div><div class="gmail_default" style="font-family:georgia,serif"> if( !h->param.i_fps_num || !h->param.i_fps_den )</div><div class="gmail_default" style="font-family:georgia,serif"> {</div><div class="gmail_default" style="font-family:georgia,serif"> h->param.i_fps_num = 25;</div><div class="gmail_default" style="font-family:georgia,serif"> h->param.i_fps_den = 1;</div><div class="gmail_default" style="font-family:georgia,serif"> }</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif">if I set <div class="gmail_default" style="display:inline"></div><span style="font-family:arial,sans-serif">b_vfr_input to 1, and set </span><div class="gmail_default" style="display:inline"></div><span style="font-family:arial,sans-serif">i_timebase_num+den correctly, will the default 25 fps cause output to be 25?</span></div><span class=""><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif"></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="gmail_extra"><div class="gmail_quote"><div><div class="m_2378035478639367765gmail-h5">2017-01-13 6:12 GMT+01:00 YIRAN LI <span dir="ltr"><<a href="mailto:mrfun.china@gmail.com" target="_blank">mrfun.china@gmail.com</a>></span>:<br></div></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div class="m_2378035478639367765gmail-h5"><div dir="ltr"><div><div class="m_2378035478639367765gmail-m_8870689737218031318h5"><div style="font-family:georgia,serif"><span style="font-family:arial,sans-serif">2017-01-13 15:08 GMT+11:00 YIRAN LI </span><span dir="ltr" style="font-family:arial,sans-serif"><<a href="mailto:mrfun.china@gmail.com" target="_blank">mrfun.china@gmail.com</a>></span><span style="font-family:arial,sans-serif">:</span><br></div><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div style="font-family:georgia,serif">Hi guys,</div><div style="font-family:georgia,serif"><br></div><div style="font-family:georgia,serif">I'm trying to convert a sequence of video frames, first half 30 fps, second half 25 fps. Can X264 encode such frame sequence and output timestamps same as input.</div><div style="font-family:georgia,serif"><br></div><div style="font-family:georgia,serif">I mean if the time stamps of frames sent to x264 is like:</div><div style="font-family:georgia,serif"><br></div><div style="font-family:georgia,serif">0, 0.333, 0.666, 0,999, 1.25, 1,5, 1.75 2.0</div><div style="font-family:georgia,serif"><br></div><div style="font-family:georgia,serif">can x264 accept them? will 8 encoded frames be output? will output frames duration still 0.333, 0.333, 0.333, 0.333 then 0.25, 0.25, 0.25, 0.25?</div><div style="font-family:georgia,serif"><br></div><div style="font-family:georgia,serif">Thanks</div></div>
</blockquote></div><br></div></div></div><div class="gmail_extra"><div style="font-family:georgia,serif">Hi, just to clarify that I'm not using the x264 command line tool, I'm using the API. I think I can't use force-cfr or -fps, but I also can't set timebase in this case, can I ?</div><br></div></div>
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