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As already mentioned, GOP values can be found also with Mediainfo. Here some extracted samples among my video files:<br>
<br>
<font face="Courier New, Courier, monospace">Pixel-3 recorded:<br>
mediainfo HD_H264_VID_20181218_131437.mp4 | grep GOP<br>
Format settings, GOP : M=1, N=60<br>
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mediainfo hdv01.m2t | grep GOP<br>
Format settings, GOP : M=3, N=12<br>
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mediainfo SD-BD_x264.m2ts | grep GOP<br>
Format settings, GOP : M=4, N=24<br>
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mediainfo HDV-BD_m2t_ac3.m2ts | grep GOP<br>
Format settings, GOP : M=3, N=12<br>
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Possibly slow playback can be related to old Cinelerra GOP issues, i.e. among these posts on the old list?<br>
<a class="moz-txt-link-freetext" href="https://www.mail-archive.com/search?l=cinelerra%40skolelinux.no&q=gop&x=0&y=0">https://www.mail-archive.com/search?l=cinelerra%40skolelinux.no&q=gop&x=0&y=0</a><br>
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Terje <br>
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<div class="moz-cite-prefix">Den 09.02.2019 11:39, skrev Igor BEGHETTO:<br>
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<blockquote type="cite" cite="mid:5C5EADC9.20203@visi1.org">
<title></title>
<font face="Times New Roman, Times, serif">What I know, to NLEs don't like great value GOP because the I-frame are very distance.<br>
I-frames (Intra frames) contains all the information of the image, P-frames (Predicted frames) and B-frames (Bidirectional predicted frames) not. Greater GOP value is, smaller file size is (it is good for streaming and delivery); smaller GOP value is, greater
file size is and more I-frames there are and then it is good for editing video. With more i-frames cpu consumes less because decode less information. For video archive would be better GOP=1 (all i-frames)<br>
Sorry, I guess, you always know that.<br>
<br>
However, you have a i7 cpu with a lot of RAM, then your PC should process your video very good, I think.<br>
Have you tried to use Proxy with scale value to 1/2, just for testing? If Proxy with "mpeg" you do, the GOP value is 12, then could be very useful.
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(I think, I am writing like Joda Jedi speak) ;-)<br>
<br>
IgorBeg<br>
</font><br>
Il 08/02/2019 23.41, Andrea paz ha scritto:
<blockquote cite="mid:CANnPPRpR9uifkhp7O5mWb657V87HK2giMhR1W4q8+MPH1SHU3w@mail.gmail.com" type="cite">
<pre wrap="">Thanks for the script.
Max GOP = 250
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<pre class="moz-quote-pre" wrap="">Meldingsteksten vil bli nedlastet etter behov.</pre>
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