Hi Loren, <br><br>I have been reading your paper titled as follows, <br>X264: A High Performance H.264/AVC Encoder<br><br>And from my understanding, these are the parameters that I need for a video conference application,<br>1. Rate Control : VBV-compliant constant bitrate (CBR), as it is the most suitable for real-time streaming.<br>2. Motion Estimation : Hexagon since it is the fastest although there is a good speed and yet better quality, the UMH.<br>3. Mode Decision : based on SATD0 and rate-distortion optimization, i.e. Inter and afterwards Intra.<br>4. Quantization : Trellis-1 (medium-complexity and bit-rate), Trellis-2 is just 0.7% better in terms of bit-rate, however, it is 27% longer in encoding time.<br>5. Frame Type Decision : it is automatically heuristically used.<br><br>Please advice if these are correct set.<br><br>Thank you.<br><br><b><i>RG Nurrahmat <rgnurrahmat@yahoo.com></i></b> wrote:<blockquote class="replbq" style="border-left: 2px solid
rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"> Dear Loren, <br><br>I am newbie in x264, and have been spending my days surfing the net to look for ways to pass my raw video data to x264 in stream ( no need to open a file). Can you show me how to do that? including the parameters needed.<br><br>Is it correct that FFMPEG can only decode? but not encode as well? Since I have built my FFMPEG to include x264 library. <br><br>Thank you.<br><br><br><b><i>Loren Merritt <lorenm@u.washington.edu></i></b> wrote:<blockquote class="replbq" style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"> On Sat, 13 Oct 2007, ½¯Ð˲ý wrote:<br><br>> I'm a newbie of x264 and tried to encode yuv sequences on multi-core<br>> platforms.<br><br>And x264's builtin threading doesn't suffice?<br><br>> first I pinned some GOP task on each logical CPUs, and then read a gop<br>> for every gop task, when the encoding process is done, the
main thread<br>> re-order the out-of-order data encoded by the GOP tasks.<br>> the result is fine, but when I playback the bitstream, there will be<br>> some error information displayed on the information window of videolan<br>> client:<br>><br>> ffmpeg warning: error while decoding MB 14 13, bytestream (-7)<br>> (h264@00CEB3C0)<br>> ffmpeg debug: concealing 145 DC, 145 AC, 145 MV errors<br>> (h264@00CEB3C0)<br>><br>> any sugestion will be appreciated.<br><br>There's nothing in the bitstream format that would prevent arbitrary <br>concatenation of GOPs. So it's a bug in your code. And since you haven't <br>posted your code, no one can possibly help.<br><br>--Loren Merritt_______________________________________________<br>x264-devel mailing list<br>x264-devel@videolan.org<br>http://mailman.videolan.org/listinfo/x264-devel<br></blockquote><br><div> Send instant messages to your online friends http://uk.messenger.yahoo.com
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