[Libav-user] A very mysterious question about FFMpeg encoding.

[Denis]

> 
> Where does your encoded data come from? Persumably you have data that you
> write to the opened avio contexts. Just copy that data into a buffer?
> 

The data comes from a webcam. I have not understood how.
See the code:

AVOutputFormat *pOutputFormat= av_guess_format("mp4", NULL, NULL); 
...
AVFormatContext *pFormatCtx;
avformat_alloc_output_context2(&pFormatCtx, pOutputFormat, NULL, NULL);
...
AVStream *pVideoStream= av_new_stream(pFormatCtx, 0);
...
AVCodecContext *pCodecCtx= pVideoStream->codec;
AVCodec *pCodec= avcodec_find_encoder(pCodecCtx->codec_id);
...
avio_open(&pFormatCtx->pb, "file.mpg", AVIO_FLAG_WRITE)


These are the five steps to encode a frame. Which is the avio context from that 
obtain the readable buffer?


-- 
www.denisgottardello.it
Skype: mrdebug
Videosurveillance and home automation! 
http://www.denisgottardello.it/DomusBoss/DomusBossIndice.php
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