public EncodingInfo GetCodecInfo()
{
EncodingInfo icodecInfo = new EncodingInfo();
icodecInfo.Width = iCodecContext->width;
icodecInfo.Height = iCodecContext->height;
icodecInfo.Sample_aspect_ratio = iCodecContext->sample_aspect_ratio;
icodecInfo.Timebase = iCodecContext->time_base;
icodecInfo.Framerate = iCodecContext->framerate;
return(icodecInfo);
}
public void OpenOutputURL(string fileName, EncodingInfo enCodecInfo)
{
AVStream *out_stream;
AVCodec * encoder;
int ret;
//output file
var _oFormatContext = oFormatContext;
ffmpeg.avformat_alloc_output_context2(&_oFormatContext, null, null, fileName);
encoder = ffmpeg.avcodec_find_encoder(AVCodecID.AV_CODEC_ID_H264);
out_stream = ffmpeg.avformat_new_stream(_oFormatContext, encoder);
oCodecContext = ffmpeg.avcodec_alloc_context3(encoder);
oCodecContext = out_stream->codec;
oCodecContext->height = enCodecInfo.Height;
oCodecContext->width = enCodecInfo.Width;
oCodecContext->sample_aspect_ratio = enCodecInfo.Sample_aspect_ratio;
oCodecContext->pix_fmt = encoder->pix_fmts[0];
oCodecContext->time_base = enCodecInfo.Timebase;
oCodecContext->framerate = ffmpeg.av_inv_q(enCodecInfo.Framerate);
if ((_oFormatContext->oformat->flags & ffmpeg.AVFMT_GLOBALHEADER) != 0)
{
oCodecContext->flags |= ffmpeg.AV_CODEC_FLAG_GLOBAL_HEADER;
}
//open codecd
ret = ffmpeg.avcodec_open2(oCodecContext, encoder, null).ThrowExceptionIfError();
ret = ffmpeg.avcodec_parameters_from_context(out_stream->codecpar, oCodecContext);
out_stream->time_base = oCodecContext->time_base;
//Show some Information
ffmpeg.av_dump_format(_oFormatContext, 0, fileName, 1);
if (ffmpeg.avio_open(&_oFormatContext->pb, fileName, ffmpeg.AVIO_FLAG_WRITE) < 0)
{
Console.WriteLine("Failed to open output file! \n");
}
//Write File Header
int error = ffmpeg.avformat_write_header(_oFormatContext, null);
error.ThrowExceptionIfError();
oFormatContext = _oFormatContext;
}