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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m generating a mp4 file using the H264 encoder from a series of still frames. This is just an animation from a technical simulation, so every frame is important and the viewer often needs to step through one frame at a time.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If I encode it using the MPEG4 encoder everything is fine. But with the H264 encoder (using the same code otherwise), I end up with missing frames. I step through frame-by-frame with Windows Media and the total number of frames is smaller than what I start with.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>1) Is there a way to force the h264 encoder to keep all frames so one can recover the original images if necessary if advancing the video frame by frame?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>2) Can somebody point out to me the controls I can use – from an API perspective – to control how frames are kept using libx264?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>-Arthur<o:p></o:p></p></div></body></html>