fFramesWritten
fFramesWritten = 0;
if (fFramesWritten > 0)
fFrame->pts = (bigtime_t)(fFramesWritten * 1000000LL
fFramesWritten += fFrame->nb_samples;
fFramesWritten += frameCount;
fFramesWritten++;
info->start_time = (bigtime_t)(fFramesWritten * 1000000LL
int64 fFramesWritten;