例子:
int nRet = av_seek_frame(m_ifmt_ctx, -1, (m_start_play_time + nSecs) * AV_TIME_BASE, AVSEEK_FLAG_BACKWARD);int nRet = av_seek_frame(m_ifmt_ctx, -1,
例子:
int nRet = av_seek_frame(m_ifmt_ctx, -1, (m_start_play_time + nSecs) * AV_TIME_BASE, AVSEEK_FLAG_BACKWARD);int nRet = av_seek_frame(m_ifmt_ctx, -1,