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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-GB>I managed to get an ffmpeg based H.264 elementary stream decoder work.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>It uses following synthax to decode one frame:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>…<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Courier New"'>codec = avcodec_find_decoder(CODEC_ID_H264);</span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>..<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Courier New"'>len = avcodec_decode_video2(c, picture, &got_picture, &pkt);<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Courier New"'>My question:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>The decoding goes very fast and CPU usage is low.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>Can I guaranty same performance on similar CPU’s?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>Is any Hardware acceleration (mmx, GPU, DXVA, etc) used to decode the frames?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>What is done behind the scene? Is there any buffering?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>Thanks,</span><span lang=EN-GB style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Courier New"'> </span><span lang=EN-GB><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB>Malik</span><span lang=EN-GB style='mso-fareast-language:FR'><o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p></div></body></html>