<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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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 trying to convert an RGB image to YUV to generate a video. My image is sized 640 x 480. These are my steps:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>unsigned char rgbdata[3*640*380]; // contains my rgb data<o:p></o:p></p><p class=MsoNormal>uint8_t *inData[1] = { rgbdata };<o:p></o:p></p><p class=MsoNormal>int inLinesize[1] = { 3*640 };<o:p></o:p></p><p class=MsoNormal>AVFrame *frame;<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>frame = av_frame_alloc();<o:p></o:p></p><p class=MsoNormal>frame->format = AV_PIX_FMT_YUV420P;<o:p></o:p></p><p class=MsoNormal>frame->width = 640;<o:p></o:p></p><p class=MsoNormal>frame->height = 480;<o:p></o:p></p><p class=MsoNormal>av_frame_get_buffer (frame,32);<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>sws_ctx = sws_getContext (640,480,AV_PIX_FMT_RGB24,640,480,AV_PIX_FMT_YUV420P,SWS_FAST_BILINEAR,0,0,0);<o:p></o:p></p><p class=MsoNormal>sws_scale(sws_ctx,inData,inLinesize,0,480,frame->data, frame->linesize);<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I do have checks after allocating the frame and getting the context, but I removed them here for clarity. The program crashes in sws_scale.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Can anybody point me in the right direction?<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>