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<blockquote data-quote="Owlsroost" data-source="post: 973785" data-attributes="member: 83973">In addition to what jameson_uk has said, UK Freeview HD uses dynamic field/frame encoding i.e. the FPS flips between 25 and 50 depending on picture content (FPS after deinterlacing, which is what dshowhelper sees).&nbsp;The only H.264 decoder I've found that can handle this properly is LAV Video Decoder, with the 'Aggressive Deinterlacing' box ticked in it's settings - otherwise you'll sometimes get a burst of stuttering and dropped/repeated frames whenever the video transitions between 25 &amp; 50 fps.&nbsp;In the render stats screen, 'Act FPS' (&amp; the red line) is real time actual rendering rate to the screen, 'Rptd FPS' is what the source/splitter filter (e.g. TsReader.ax for TV) thinks it is, and 'Detd FPS' is what dshowhelper calculates from the video stream timestamps in real time. If the system is not dropping frames then 'Act FPS' and 'Detd FPS' should be the same, but 'Rptd FPS' can be different e.g. Rptd FPS = 25 and Detd FPS = 50&nbsp;Note that 'Act FPS' and 'Detd FPS' are smoothed/averaged values, but the red line is not smoothed so dropped/repeated frames show up as glitches.</blockquote>

[QUOTE="Owlsroost, post: 973785, member: 83973"] In addition to what jameson_uk has said, UK Freeview HD uses dynamic field/frame encoding i.e. the FPS flips between 25 and 50 depending on picture content (FPS after deinterlacing, which is what dshowhelper sees). The only H.264 decoder I've found that can handle this properly is LAV Video Decoder, with the 'Aggressive Deinterlacing' box ticked in it's settings - otherwise you'll sometimes get a burst of stuttering and dropped/repeated frames whenever the video transitions between 25 & 50 fps. In the render stats screen, 'Act FPS' (& the red line) is real time actual rendering rate to the screen, 'Rptd FPS' is what the source/splitter filter (e.g. TsReader.ax for TV) thinks it is, and 'Detd FPS' is what dshowhelper calculates from the video stream timestamps in real time. If the system is not dropping frames then 'Act FPS' and 'Detd FPS' should be the same, but 'Rptd FPS' can be different e.g. Rptd FPS = 25 and Detd FPS = 50 Note that 'Act FPS' and 'Detd FPS' are smoothed/averaged values, but the red line is not smoothed so dropped/repeated frames show up as glitches. [/QUOTE]

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