On Sun, May 5, 2013 at 2:59 PM, yy-zed <[email protected]> wrote:
I've written a piece of C++ code that can capture webcam video frame, decode > them, convert them to YUV420P, encode them and then write them to a file. > If > I use the mpeg2 codec and write to a .mpg file, everything works perfectly. > But, if I use flv, then the output produced is just a green screen. I'm not > sure if there are different encoder settings I need to set for encoding flv > video?Or maybe I'm doing something wrong in sws_scale? Here's my code(the > relevant parts): > > //Read a video frame in > av_read_frame(pFormatCtx,&packet); > > //Decode the contents of packet into pFrame > avcodec_decode_video2(pCodecCtx,pFrame,&frameFinished,&packet); > >From your snippet, it is not clear what pCodecCtx is, but anyways it's good practice to check the return code from avcodec_decode_video2() and frameFinished, before you pass pFrame to sws_scale(). BR, Alex
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