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<p class="MsoNormal" style="margin-bottom:12.0pt;text-align:left;line-height:13.5pt;background:white;vertical-align:baseline;direction:ltr;unicode-bidi:embed">
<span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">I used ffmpeg to get video info. The output is<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:left;line-height:13.5pt;background:#EEEEEE;vertical-align:baseline;direction:ltr;unicode-bidi:embed">
<span style="font-size:10.5pt;font-family:Consolas;color:black;border:none windowtext 1.0pt;padding:0cm;background:#EEEEEE"> Duration: 00:05:57.00, start: 0.000000, bitrate: 611 kb/s Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 808x610,
609 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;text-align:left;line-height:13.5pt;background:white;vertical-align:baseline;direction:ltr;unicode-bidi:embed">
<span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">The time base is used to somehow(this is also my another question) calculate when to decode and show the frame, right? So whose time base is used, container (12800) or codec (50)?<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:12.0pt;text-align:left;line-height:13.5pt;background:white;vertical-align:baseline;direction:ltr;unicode-bidi:embed">
<span style="font-size:10.5pt;font-family:"Arial","sans-serif";color:black">The another question is why tbn=12800 and not 90000?<o:p></o:p></span></p>
<p class="MsoNormal" dir="RTL"><span dir="LTR"><o:p> </o:p></span></p>
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